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15 Jul 2014

Create excel spreadsheet using PHP and Mysql

You can generate excel spreadsheets easily using PHP. You need to follow below steps to create excel file.

Add content type:

First you need to add excel sheet content type to create excel file using PHP.

header("Content-Type: application/vnd.ms-excel");

Add name and download excel file:

You can provide name for excel spreadsheet and make your sheet as downloadable file on coding. The Content-Disposition is used to force browser to save a file. For that, your file should be attached following line:

header("Content-disposition: attachment; filename=spreadsheet.xls");

Add content to excel spreadsheet:

Finally you can add contents to your excel file. Consider the following PHP script for generate excel file:

<?php
header("Content-Type: application/vnd.ms-excel");
header("Content-disposition: attachment; filename=spreadsheet.xls");
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new') or die(mysql_error());
$q=mysql_query("select * from table1") or die(mysql_error());
if(mysql_num_rows($q)>0)
{
echo"<table><tr><th>Name</th><th>Address</th><th>Phone</th></tr>";
while($res=mysql_fetch_array($q))
{
echo"<tr><td>".$res['name']."</td><td>".$res['address']."</td><td>".$res['phone']."</td></tr>";
}
echo"</table>";
}
?>

Where,
mysql_fetch_array() return values as both an associative and numeric array.
while executing file, it required you to save excel file. After save file, you can view it. Now you got excel spreadsheet with named spreadsheet.xls which is created by PHP.

Related Post:
How to fetch result from mysql table using mysql_fetch_array in PHP
Create json file using PHP and MySQL
PHP : Parse data from XML Sitemap using simplexml_load_file and file_get_elements
Read data from JSON file using PHP
Parse data from XML file using PHP

13 Jul 2014

Send forgotten password to mail in login form using php and mysql

Already you know about validate login form with remember me and signout concepts using php. You want to know Login with remember me and signout using php and mysql.
Now see about how to send forgotten password to mail using php?. First your table contains users mail id. Just imagine this is your table:

Login form using php and mysql:

Consider the following example:

login.php:

<html>

<head>
<style type="text/css">
input{
border:1px solid olive;
border-radius:5px;
}
h1{
color:darkgreen;
font-size:22px;
text-align:center;
}
span{
color:lightgreen;

}
</style>
</head>
<body>
<h1>Login<h1>
<form action='#' method='post'>
<table cellspacing='5' align='center'>
<tr><td>User name:</td><td><input type='text' name='name'/></td></tr>
<tr><td>Password:</td><td><input type='password' name='pwd'/></td></tr>
<tr><td></td><td><input type='checkbox' name='remember' /> <span>Remember me</span></td></tr>
<tr><td></td><td> <span><a href="forgot.php">Forgot password</a></span></td></tr>
<tr><td></td><td><input type='submit' name='submit' value='Submit'/></td></tr>
</table>

</form>
<?php
session_start();
//your values are stored in cookies, then you can login without validate
if(isset($_COOKIE['name']) && isset($_COOKIE['pwd']))
{
header('location:welcome.php');
}
// login validation in php
if(isset($_POST['submit']))
{
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new')  or die(mysql_error());
$name=$_POST['name'];
$pwd=$_POST['pwd'];
if($name!=''&&$pwd!='')
{
$query=mysql_query("select * from login where name='".$name."' and password='".$pwd."' ")  or die(mysql_error());
$res=mysql_fetch_row($query);
if($res)
{
if(isset($_POST['remember']))
{
  setcookie('name',$name, time() + (60*60*24*1));
  setcookie('pwd',$pwd, time() + (60*60*24*1));
}
$_SESSION['name']=$name;
header('location:welcome.php');
}
else
{
echo'You entered username or password is incorrect';
}
}
else
{
echo'Enter both username and password';
}
}
?>
</body>
</html>

While you run the above file, you'll get output like this:

Fogot password in php:

The php script for send forgotten password to mail is:

forgot.php:

<html>
<head>
<style type="text/css">
input{
border:1px solid olive;
border-radius:5px;
}
h1{
color:darkgreen;
font-size:22px;
text-align:center;
}

</style>
</head>
<body>
<h1>Forgot Password<h1>
<form action='#' method='post'>
<table cellspacing='5' align='center'>
<tr><td>Email id:</td><td><input type='text' name='mail'/></td></tr>
<tr><td></td><td><input type='submit' name='submit' value='Submit'/></td></tr>
</table>
</form>
<?php
if(isset($_POST['submit']))
{
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new') or die(mysql_error());
$mail=$_POST['mail'];
$q=mysql_query("select * from login where mail='".$mail."' ") or die(mysql_error());
$p=mysql_affected_rows();
if($p!=0)
{
$res=mysql_fetch_array($q);
$to=$res['mail'];
$subject='Remind password';
$message='Your password : '.$res['password'];
$headers='From:guruparthiban19@gmail.com';
$m=mail($to,$subject,$message,$headers);
if($m)
{
echo'Check your inbox in mail';
}
else
{
echo'mail is not send';
}
}
else
{
echo'You entered mail id is not present';
}
}
?>
</body>
</html>

Where,
mysql_query("select * from login where mail='".$mail."' "); is select the values from mysql table.
mysql_affected_rows() return the number of rows selected. If it returns 0, then there is no values is present in mysql table.
mysql_fetch_array() return the results an associated array. You want to know mysql_fetch_array().
Mail() is used to send password to mail. Yow want to know mail() in php.

When you click the 'forgot password' in login page, you'll get output like this:

You entered your email id in text box and click submit button. Now you can get message 'Check your inbox in mail' if the mail is send. Otherwise, you'll get 'Mail is not send' message. If you enetered mail id which is not present is mysql table, then you will get 'You entered mail is is not present' message.

Related Post:
Create Registration form using PHP and MySQL
Login form validation using PHP and Mysql
Remember me in login form validation using PHP and Mysql

7 Jul 2014

Validate login form with remember me using php and mysql

All of you know the simple login validation concepts in php. Otherwise visit login validation using php. Now see about login form with remember me concept in php. You can remember the user using cookies concept in php.
When you click the remember me check box, your name and password is stored in cookie. Though you signout and close the browser, you can login again while open page in browser. Your name kept by cookie until expire the time or you clear the cache in your browser.

Remember me in login form using php:

Consider the following example. You have 3 php pages such as login.php, welcome.php and signout.php.

login.php:

<html>
<head>
<style type="text/css">
input{
border:1px solid olive;
border-radius:5px;
}
h1{
color:darkgreen;
font-size:22px;
text-align:center;
}
span{
color:lightgreen;

}
</style>
</head>
<body>
<h1>Login<h1>
<form action='#' method='post'>
<table cellspacing='5' align='center'>
<tr><td>User name:</td><td><input type='text' name='name'/></td></tr>
<tr><td>Password:</td><td><input type='password' name='pwd'/></td></tr>
<tr><td></td><td><input type='checkbox' name='remember' /> <span>Remember me</span></td></tr>
<tr><td></td><td><input type='submit' name='submit' value='Submit'/></td></tr>
</table>

</form>
<?php
session_start();
//your values are stored in cookies, then you can login without validate
if(isset($_COOKIE['name']) && isset($_COOKIE['pwd']))
{
header('location:welcome.php');
}
// login validation in php
if(isset($_POST['submit']))
{
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new') or die(mysql_error());
$name=$_POST['name'];
$pwd=$_POST['pwd'];
if($name!=''&&$pwd!='')
{
$query=mysql_query("select * from login where name='".$name."' and password='".$pwd."' ");
$res=mysql_fetch_row($query);
if($res)
{
if(isset($_POST['remember']))
{
setcookie('name',$name, time() + (60*60*24*1));
setcookie('pwd',$pwd, time() + (60*60*24*1));
}
$_SESSION['name']=$name;
header('location:welcome.php');
}
else
{
echo'You entered username or password is incorrect';
}
}
else
{
echo'Enter both username and password';
}
}
?>
</body>
</html>

where,
if(isset($_COOKIE['name']) && isset($_COOKIE['pwd'])) {} means if the user values in cookies, then the user can login directly without login validation in php.

if(isset($_POST['remember'])){
setcookie('name',$name,time() + (60*60*24*1));
setcookie('pwd',$pwd,time() + (60*60*24*1));
}
which means, if the user click the remember me check box, then you have to store them in cookie. If you don't know about cookies in php, then visit Cookies in php.

When you run the login.php fille, you'll get output like this:

validate remember me concept in login form using php

welcome.php:

<?php
session_start();
if(isset($_COOKIE['name']))
{
echo 'Welcome: '. $_COOKIE['name'].'<br>';
}
else
{
echo 'Welcome: '. $_SESSION['name'].'<br>';
}
echo'<a href="signout.php">Singout</a>';
?>

where,
if(isset($_COOKIE['name'])){}else{} means if the values in cookie, then return name from cookie. Otherwise name return from session.

Now you enter username and password 'guru' and 'guru' without select the remember check box, you will navigate to 'welcome.php' page and get output like this:

welcome: guru
Signout

If it is wrong, then you can't login.

Signout in php:

When you click the signout.php, it destroy the session and return back to login page. The php script for signout page:
signout.php:

<?php
session_start();
session_destroy();
header('location:login.php');
?>

You select the remember me check box while login. Then you navigate to welcome.php page. Now you click the signout on welcome.php page, you can't return back to login page. Because the concept is, when you signout the page, you return back to login.php page, where you wrote the php script as like as:

if(isset($_COOKIE['name']) && isset($_COOKIE['pwd'])) {}

It means, if values in cookie, you can login again. Now you comes to login page and again login and navigates to welcome page because your values in cookies.So you are in welcome page until the cookie is expired.

Related Post:
Create Registration form using PHP and MySQL
Simple login form validation using php and mysql
Forgot password to mail in login form validation using PHP and Mysql

6 Jul 2014

Login validation using php and mysql

Everybody should see the login pages in most of websites. You should have doubt about this login form, how they validate username and password. There is nothing, just only 2 steps as follows as for login validation using php.
1. You enter username and password already registered which is stored in mysql database.
2. After you submit a button to login, it check the database values whether the username and password is correct or not using php and mysql query. The mysql query for select a values from mysql database as like this:

ie, SELECT * FROM table_name WHERE name='username' and password='password'

If it return values correctly, then you can login. Otherwise it give error message.

Simple login validation using php and mysql:

Lets see how to validate the username and password using php.

1. First you create table using mysql query like this:

CREATE TABLE login(name varchar(30), password varchar(30), PRIMARY KEY(name))

Now the table 'login' is created. The field 'name' is primary key. Because the username must be unique.

2. Then insert values into table using mysql query like this:

INSERT INTO login VALUES('guru','guru')

Now the table look like this:

3. The php script for login validation as follows as:
login.php:

<html>
<head>
<style type="text/css">
input{
border:1px solid olive;
border-radius:5px;
}
h1{
color:darkgreen;
font-size:22px;
text-align:center;
}
</style>
</head>
<body>
<h1>Login<h1>
<form action='#' method='post'>
<table cellspacing='5' align='center'>
<tr><td>User name:</td><td><input type='text' name='name'/></td></tr>
<tr><td>Password:</td><td><input type='password' name='pwd'/></td></tr>
<tr><td></td><td><input type='submit' name='submit' value='Submit'/></td></tr>
</table>

</form>
<?php
session_start();
if(isset($_POST['submit']))
{
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new') or die(mysql_error());
$name=$_POST['name'];
$pwd=$_POST['pwd'];
if($name!=''&&$pwd!='')
{
$query=mysql_query("select * from login where name='".$name."' and password='".$pwd."'") or die(mysql_error());
$res=mysql_fetch_row($query);
if($res)
{
$_SESSION['name']=$name;
header('location:welcome.php');
}
else
{
echo'You entered username or password is incorrect';
}
}
else
{
echo'Enter both username and password';
}
}
?>
</body>
</html>

Where,
  if(isset($_POST['submit']){}   means run after submit a results.
  if($name!=''&&$pwd!=''){} means if either username or password is empty, it give message like as 'Enter both username and password'.
  mysql_query("select * from login where name='".$name."' and password='".$pwd."' ") select the values if the username and password is present.
$res=mysql_fetch_row($query) return row as numeric array.
You don't know about mysql_fetch_row, then visit mysql-fetch-row in mysql.
if($res){} validate the result. If it is correct, then your name is stored in session variable and also you'll navigate to 'welcome.php' page. Otherwise you'll get 'You entered username or password is incorrect' message. You want to visit Session in php.
    When you run the above file, it should be like this:

The php script for welcome page:

welcome.php:

<?php
session_start();
$name=$_SESSION['name'];
echo'welcome :'. $name.'<br>';
echo'<a href="signout.php">Signout</a>';
?>

Now you enter username and password 'guru' and 'guru', you will navigate to 'welcome.php' page and get output like this:

welcome: guru
Signout

If it is wrong, then you can't login.

Signout in php:

When you click the signout.php, it destroy the session and return back to login page. The php script for signout page:
signout.php:

<?php
session_start();
session_destroy();
header('location:login.php');
?>

session_destroy is used to destroy the session variable in php.

Related Post:
Create Registration form using PHP and MySQL
Login form validation with remember function using php and mysql
Forgot password to mail in login form validation using PHP and Mysql

2 Jul 2014

Create sitemap dynamically using PHP and MySQL

Do you know why you need to add sitemap into you websites? what is the use of sitemap? Let see here to solve all of your doubts about sitemap.

Sitemap:

Sitemap is very important for all websites. All of you know, the search engines like google, bing are crawling pages on your websites to know about websites. Using this sitemap, webmasters to inform search engines about pages for crawling. Sitemap is a XML file which contains all url of your websites upto to date. If you add new page to your site, then you'll add url of new page to sitemap for crawling.

Sitemap is also provide url structure of websites. Suppose a new user comes to your websites. The sitemap leads new user to all pages on your site.

Structure of sitemap:

The structure of sitemap is:

<?xml version="1.0" encoding="UTF-8">
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
<url>
<loc>http://www.phponwebsites.com</loc>
<lastmod>today date<lastmod>
<changefreq>daily</changefreq>
<priority>1</priority>
</url>
<url>
<loc>http://www.phponwebsites.com/p/htaccess.html</loc>
<lastmod>today date<lastmod>
<changefreq>daily</changefreq>
<priority>1</priority>
</url>
</urlset>

where,
urlset - encapsulates the file ie, start sitemap
url - parent tag for each entry ie, each page
loc - location of url
lastmod - date for last modification of file
changefreq - how frequently the pag is changed. It should be always, hourly, daily, monthly, weekly, yearly, never
priority - priority of url. It should be between 0.0 to 1.0

Create sitemap dynamically using PHP and MySQL:

First you need to add content type for xml to generate sitemap in PHP. ie,

header ("content-type: text/xml");

Then add contents to XML file. Then save this file as sitemap.php .

<?php
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new') or die(mysql_error());
$dat=date('Y-m-d');
header ("content-type: text/xml");
echo '<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">';
$urls=mysql_query("select * from url")or die(mysql_error());
while($row_Tags=mysql_fetch_array($urls))
{
echo "<url><loc>".$row_Tags['url']."</loc><lastmod>".$dat."</lastmod><changefreq>daily</changefreq><priority>1</priority></url>";
}
echo "</urlset>";
?>

.htaccess:

In your .htaccess, you add following codes.

RewriteRule ^sitemap.xml sitemap.php [L]

When you run sitemap.xml on your website each time, it display upto date contents.

Related Post:

Create RSS Feed dynamically using PHP and MySQL
Read data from RSS Feed using PHP
Create XML file using PHP and MySQL

25 Jun 2014

How to store array values into cookies in PHP

Cookies can store only string values. It can't store array values. But we are try to add array values into cookies in PHP.

Store array into cookies in php using serialize():

Consider the following PHP script:

<?php
error_reporting('E_ALL ^ E_NOTICE');
$val=array('name'=>'Guru','country'=>'USA');
$val1=serialize($val);
setcookie('values',$val1);
?>

Where,
serialize() - Generate a storable values. Suppose you use above PHP code without serialize array value. Then you'll get error like this:

After serialize the array values, you can store array values into cookies using setcookie() in PHP.
Now the cookie contains array values.

Retrieve array values from cookies in PHP using unserialize():

Consider the following example:

<?php
error_reporting('E_ALL ^ E_NOTICE');
$val=array('name'=>'Guru','country'=>'USA');
$val1=serialize($val);
setcookie('values',$val1);
$dat=$_COOKIE['values'];
$data=unserialize($dat);
foreach($data as $key => $vl)
{
echo $key.' : '.$vl.'<br>';
}
?>

Where,

unserialize() - takes serialized values and converts it into PHP value again. If you didn't use unserialize() in above PHP code, then you'll get error like this:

Retrieve array values from cookies in php

$_COOKIES[''] is used to retrieve values from cookies.
Now you can get array values from cookies. The output is:

name : Guru
country : USA

Store multiple values into cookies in PHP using json_encode():

You can also store multiple values into cookies using json_encode() method in PHP.

json_encode() returns JSON representation of a value. Consider the example:

<?php
$val=array('name'=>'Guru','country'=>'USA');
$ar=json_encode($val);
setcookie('cook',$ar);
?>

After encoded the array values, you can store it into cookies. If you use above code without json_encode(), then you'll get warning error message.

Retrieve array values from cookies in PHP using json_decode();

You can retrieve array values from cookies using json_decode() like unserialize() in PHP.

json_decode() takes JSON encoded values and convert it into PHP value again. Consider the example:

<?php
$val=array('name'=>'Guru','country'=>'USA');
$ar=json_encode($val);
setcookie('cook',$ar);
$return=$_COOKIE['cook'];
$arr=json_decode($return, true);
foreach($arr as $key1 => $values)
{
echo $key1.' : '.$values.'<br>';
}
?>

Now you can get output like this:

name : Guru

country : USA

Related Post:

How to store/retrieve values in session in PHP

How to store/retrieve values in cookies in PHP

How to store/retrieve array values into session in PHP

23 Jun 2014

How to store array values into session in php

You can store single value to session in PHP easily. Visit store values to session in php.

Store array values to session in PHP:

You can also store multiple values into session using PHP. You can store one or more than one values in array that can be stored into session. Consider the following example. It describes the array values directly stored into session in PHP. The following PHP script is used to store values to session in PHP.

<?php
session_start();
$ar=array('php','mysql','jquery');
$_SESSION['arr']=$ar;
$session=$_SESSION['arr'];
foreach($session as $val)
{
echo $val.'<br>';
}
?>

where,
session_start() - start the session
$ar=array() - array variable

Now you can get output like this:

php
mysql
jquery

Store multiple (array) values into session in PHP on form submit:

Consider the following example:

The above example describes array values are storing into session in PHP while form submitting.
where,
if(count($_SESSION['arr'])==0) {} - check whether the array contains values or not. Create array variable and store value into array, then value is stored into session if there is no values in session. Otherwise it directly add values into session.
array_push() - add values to array in PHP.

Related Post:

Session in PHP
Cookies in PHP
How to store values into cookies in PHP

16 Jun 2014

4 Types of errors in php

Errors will occur for following reason in php:
1.unclosed quotes,
2.missing semicolon,
3.missing parentheses,
4.add extra parentheses,
5.unclosed braces,
6.undefined variable,
7.call undefined function,
8.includes files which is not found

Common errors in php:

Basically four types errors is occurred in php. There are:

1. Parse error

2. Fatal error

3. Warning

4. Noticed error

Parse error:

The parse errors php is the syntax error. It stops the execution of the script in php. The common reasons for occur parse in php as follows:

1.unclosed quotes
2.missing semicolon
3.unclosed braces
4.missing parentheses
5.add extra parentheses

Parse error by unclosed quotes in php:

Consider the following example in php:

<?php
$name='guru;
echo $name;
?>

where, the quotes are not closed. When you run this file, you'll get error message like this:

Parse error by missing semicolon in php:

Consider the following example:

<?php
$name='Guru'
echo $name;
?>

where, the semicolon is missing at $name. It gives the parse error like below:

Parse error by unclosed braces in php:

<?php

$a=5;

$b=6;

if($a==$b)

{

echo 'equal';

else

{

echo'Not equal';

}

where the closing brace is missed. When you run this file, you'll get error message like below:

Fatal error in php:

The fatal error will occur when you call the undefined function in php. It stop the execution of the php script.

<?php

function name($str)

{

echo $str;

}

echo place('guru');

where the function "place()" is not defined. But you call that function. Now it gives the fatal error like below:

Waring in php:

The warning is occurred when you include the file but the file is not found in php. It does not stop the execution of the php script.

<?php

include('welcome.php');

echo'welcome';

where, the file welcome.php is not found but you include it. So you'll get output like this:

Noticed error in php:

The noticed error is occurred when you use undefined variable. It does not stop execution of the php script.

<?php

$name='Guru';

echo $guru;

where $guru is not defined but you accessed. So you'll get error message like this:

11 Jun 2014

Send mail using php

You can send emails using php.

Mail() in php:

The mail() in php is used to send mail. The syndex for mail() is:

mail(to, subject, message, header)

Where,

to - receiver mail id.

subject - subject of mail.

message - message to be sent.

header - header of mail.

Note:

You can send mail if you are in server. You've to make some changes in php.ini file, if you send mail from local server.

You've to make following changes in your php.ini file to send mail.

[mail function]

; For Win32 only.

; http://php.net/smtp

SMTP =your ISP's mail server address

; http://php.net/smtp-port

smtp_port = 25

; For Win32 only.

; http://php.net/sendmail-from

sendmail_from =example@gmail.com

How to send mail using php:

The following php script is used for send mail:

<?php

$to='example@gmail.com';

$subject='Send mail using php';

$message='This mail send using php';

$headers='From: guruparthiban19@gmail.com';

$mail=mail($to,$subject,$message,$headers);

if($mail)

{

echo'Mail send successfully';

}

else

{

echo'Mail is not send';

}

If the the mail is send, then you'll get successful message. Otherwise you'll get 'Mail is not send' message. Now you can see mail in inbox.

2 Jun 2014

PHP - Cookies

Cookie is a file. It is used to identify the user. All of you see the login form with remember me check box. When you click it, it store your name in cookie. You can login again, when you open the page in your browser, even if you signout and close the browser. The cookie keep the information until it expired.

Cookies in php:

In php, you can

1. Create cookies,

2. Retrieve cookies,

3. Delete cookies.

Create cookies in php:

setcookie() is used to create cookies in php. The syntax for create cookies as follows as:

setcookie(name, value, expire, path, domain)

where,

- name is name of the cookie.

- value is value kept by cookie.

- expire is when the cookie expired. It is defined by time() + 60*60*24*30 (cookie set for 30 days). If set the expire is 0 or not defined, then the cookie is expired when close the session.

- path refers where the cookie is available. If the set '/', then the cookie will be available on whole domain. If you want to set cookies only particular folder, then you've to set path '/foldername/'. You can set for sub-folder too like '/folder/sub-folder/'. If it is not set, the cookies will be available only on current directory.

- domain refers where the cookies is available.

Consider the following example:

<?php
setcookie('name','guru', time()+ (60*5) );
?>

where,
- name is name of guru.
- guru is the cookie values.
- time()+ (60*5) means cookies expired after 5 minutes. If you want to set cookies in days, then use
time() + (60*60*24*1) where set expiration time for 1 day.

Retrieve cookies in php:

S_COOKIE['name'] is used to retrieve the cookie in php. Consider the following example:

<?php
setcookie('name','guru', time()+ (60*5) );
echo $_COOKIE['name'];
?>

Now you'll get output: guru

Delete cookies in php:

You can delete the cookies by set expire time is past in php. Consider following example in php:

welcome.php:

<?php
setcookie('name','guru', time()+ (60*5) );
echo $_COOKIE['name'];
echo'<a href="signout.php">Signout</a>';
?>

signout.php:

<?php
setcookie('name','guru',time() - (60*5));
header('location:welcome.php');
?>

When you run the welcome.php, your output like this:

guru
signout

When you click the signout, it delete cookies and navigates to welcome.php. Now you'll get output like below:

signout

Related Post:

PHP - session
How to store value in session in PHP
How to destroy session in PHP
How to store multiple values into session in PHP

22 May 2014

PHP - Session

Session is the temporary memory to store a particular value. All of you use gmail, that gmail is the bset example for session concept. If you login gmail, then close the browser. Now you open gmail in your browser, you login gmail again. Unlike, you logout from gmail and close the browser. Now you can't login again. It comes to login page. This is the session concept. The value is stored in session until you destroy the session.

Session in php:

In php, there is 3 steps for session.
1. Start the session using session_start().
2. Load values to session variable by $_SESSION['name']='Guru'.
3. Destroy the session by session_destroy() or unset($_SESSION['name']).

session_start() in php:

It is used to start the session in php. Consider folowing example in php:

<?php
session_start();
$_SESSION['name']='Guru';
echo $_SESSION['name'];
?>

Now you'll get output: Guru

Suppose you run file without session_start(). Then you'll get error message like below:

session_destroy() in php:

It is used to destroy the session. Consider following example in php:

welcome.php:

<?php
session_start();
$_SESSION['name']='Guru';
echo $_SESSION['name'].'<br>';
echo'<a href="signout.php">Signout</a>';
?>

signout.php:

<?php
session_start();
session_destroy();
header('location:welcome.php');
?>

When you run the welcome.php, your output like this:

Guru
Signout

When you click the signout, it destroy the session and navigates to welcome.php. Now you try to clikc back button on your browser, it go to welcome.php page, but the value stored in session is not displayed. It give error message like below:

unset() in php:

You can also delete the session using unset() in php. The script for unset() as follows as:

<?php
session_start();
unset($_SESSION['name']);
header('location:welcome.php');
?>

It is also give same output like session_destroy() in php.

Related Post:

PHP - Cookies
How to store values in cookie using PHP
How to retrieve values from cookies in PHP
How to delete cookies in PHP
How to store multiple values into session in PHP

14 May 2014

Pagination using php and mysql with jquery and ajax

You can display values with pagination using php. But you have to pass the page number and also relevant values through url. So your url look like this:

pagination.php?p=2

The good php website should be contain good url strucutre. Thats why you alter the urls using .htaccess. You don't need to show passing values in url. It can be hidden by .htaccess. If you don't know, just visit Redirect urls using htaccess.
So you need ajax and jquery to pass the values. Already you know the basic pagination concept. Otherwise, please visit Pagination using php and mysql.

Pagination using juery and ajax:

You need small function which is called by onclick event to display values with pagination in php. The jquery function as follows as:

Where,
- function page(e){} is called from click event.
ie, <a onclick="return page('.$i.')">'.$i.'</a>

- e is a page number passed from click event.
- pagination.php is name of this php file.
You define the url, data, dataType and type in ajax post to pass the values.

The overall php script for pagination:

<html>
<body>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<div id='page'>
<?php
error_reporting('E_ALL ^ E_NOTICE');
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new') or die(mysql_error());
$page=$_REQUEST['p'];
$limit=10;
if($page=='')
{
$page=1;
$start=0;
}
else
{
$start=$limit*($page-1);
}
$query=mysql_query("select * from table1 limit $start, $limit") or die(mysql_error());
$tot=mysql_query("select * from table1") or die(mysql_error());
$total=mysql_num_rows($tot);
$num_page=ceil($total/$limit);
echo'<table><th>Reg.Id</th><th>Name</th><th>Category</th>';
while($res=mysql_fetch_array($query))
{
echo'<tr><td>'.$res['game_ID'].'</td><td>'.$res['game_Title'].'</td><td>'.$res['category_Name'].'</td></tr>';
}
echo'</table>';
function pagination($page,$num_page)
{
echo'<ul style="list-style-type:none;">';
for($i=1;$i<=$num_page;$i++)
{
if($i==$page)
{
echo'<li style="float:left;padding:3px;">'.$i.'</li>';
}
else
{
echo'<li style="float:left;margin- left:4px;background:rgb(170,177,35);padding:4px;cursor:pointer;border:1px solid darkgreen ;"><a onclick="return page('.$i.')">'.$i.'</a></li>';
}
}
echo'</ul>';
}
if($num_page>1)
{
pagination($page,$num_page);
}
?>
<script type="text/javascript">
function page(e) {
$.ajax({
url:'pagination.php',
data:{p:e},
dataType:'html',
Type:'post',
success:function(e){
$('#page').html(e);
}
});
}
</script>
</div>
</body>

</html>

You'll get output like like this:

pagination using php and jquery with ajax

Now you can paginated to next page. The url structure of your website should be fine.

Note:
For pagination, you need any jquery reference like:
" <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> "

Related Post:

Sorting column by clicking column header using php and mysql
Sorting column with pagination by clicking column header using php and mysql

12 May 2014

Sorting column with pagination by clicking column header using php and mysql

All of you know how to sorting column while clicking column header like mysql table in database through my previous post. Don't you know? Please visit this sorting column by clicking column header using php .

Now we are going to see about sorting column with pagination like table in mysql database. You sorting column by clicking column header in mysql table and you paginated to next page. You will get result followed by next value.
ie, you sort column by id. First 30 values displayed in first page in mysql table. When you paginate to next page, you will get output from 31st to 60 in your mysql table. Can you make your table like mysql table with sorting and pagination? Yes, you can also done pagination using php.
Already you know the sorting concepts. So now we will see sorting with pagination concepts.

1. Start and limit values based on page number:

$limit=10;
$page=$_GET['p'];
if($page=='')
{
$page=1;
$start=0;
}
else
{
$start=$limit*($page-1);
}

Where,
$limit is the number rows per page.
$page is page number.
$start is starting point of limit in mysql query.

2. Total number of data in mysql table:
Then we need to calculate the total number of data in table. Then find the maximum pages like below:

$total_values=mysql_query("SELECT game_ID, category_Name, game_Title FROM table1");
$total=mysql_num_rows($total_values);
$maxpage=ceil($total/$limit);

Where,
mysql_num_rows() returns the numbers results in numeric.
ceil() returns the whole digit number. ie, ceil(2.3) => 3.
$maxpage returns the number of pages.

3. Function for pagination:

function pagination($maxpage,$page,$url,$field,$sort)
{
//After you sorting your table by clicking particular column, the following trick is used to display
//values with similar sorted values.
if($sort=='ASC')
{
$sort='DESC';
}
else
{
$sort='ASC';
}
echo'<ul style="list-style-type:none;">';
for($i=1; $i<=$maxpage; $i++)
{
if($i==$page)
{
echo'<li style="float:left;padding:5px;">'.$i.'</li>';
}
else
{
echo'<li style="float:left;padding:5px;"><a href="sort.php?p='.$i.'&sorting='.$sort.'&field='.$field.' ">'.$i.'</a></li>';
}
}
echo'</ul>';
}
pagination($maxpage,$page,$url,$field,$sort);

Where, you have to use small tricks. You have to pass the sorting and field values in url using function.
ie, Already we set if the url get 'ASC' value, then it will take as 'DESC'. This is for sorting. Similarly, you have to do same thing for pagination.

Sorting column with pagination by clicking column header:

The total php script as follows for both sorting and pagination by clicking column header:

<?php
error_reporting(E_ALL ^ E_NOTICE);
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('new');
$field='game_ID';
$sort='ASC';
if(isset($_GET['sorting']))
{
if($_GET['sorting']=='ASC')
{
$sort='DESC';
}
else { $sort='ASC'; }
}
if($_GET['sorting'])
{
if($_GET['field']=='game_ID')
{ $field = "game_ID"; }
elseif($_GET['field']=='category_Name')
{ $field = "category_Name"; }
elseif($_GET['field']=='game_Title')
{ $field="game_Title"; }
}
//pagination
$url='sort.php';
$limit=10;
$page=$_GET['p'];
if($page=='')
{
$page=1;
$start=0;
}
else
{
$start=$limit*($page-1);
}

$sql = "SELECT game_ID, category_Name, game_Title FROM table1 ORDER BY $field $sort limit $start, $limit";
$total_values=mysql_query("SELECT game_ID, category_Name, game_Title FROM table1");
$total=mysql_num_rows($total_values);
$maxpage=ceil($total/$limit);
$result = mysql_query($sql) or die(mysql_error());
echo'<table border="0">';
echo'<th><a href="sort.php?sorting='.$sort.'&field=game_ID">Game Id</a></th>
<th><a href="sort.php?sorting='.$sort.'&field=category_Name">Category Name</a></th>
<th><a href="sort.php?sorting='.$sort.'&field=game_Title">Game Name</a></th>';
while($row = mysql_fetch_array($result)) {
echo'<tr><td>'.$row['game_ID'].'</td><td>'.$row['category_Name'].'</td><td>'.$row['game_Title'].'</td></tr>';
}
echo'</table>';
function pagination($maxpage,$page,$url,$field,$sort)
{
//After you sorting your table by clicking particular column, the following trick is used to display
//values with similar sorted values.
if($sort=='ASC')
{
$sort='DESC';
}
else
{
$sort='ASC';
}
echo'<ul style="list-style-type:none;">';
for($i=1; $i<=$maxpage; $i++)
{
if($i==$page)
{
echo'<li style="float:left;padding:5px;">'.$i.'</li>';
}
else
{
echo'<li style="float:left;padding:5px;"><a href="sort.php?p='.$i.'&sorting='.$sort.'&field='.$field.' ">'.$i.'</a></li>';
}
}
echo'</ul>';
}
pagination($maxpage,$page,$url,$field,$sort);
?>

Now you will get output like this:

Display table data in both ascending and descending order by clicking column header using php

Now you can sorting column with pagination by clicking column header.

Related Post:

Simple pagination concepts using php and mysql
Pagination using php, mysql and ajax

7 May 2014

Sorting column by clicking column header with php and mysql in table

All of you use the tables in mysql database. When you click the column header at first time, it displays values in ascending order. Likewise it displays values in descending order, while clicking field name second time. Normally the table look like this:

sorting column values using PHP and Mysql at phponwebsites

When you click the category_Name field, it display value by ascending order as follow as:

ascending and descending column values while clicking column header using PHP and Mysql at phponwebsites

We can make our table like tables in mysql database. We can sorting values in column by clicking filed name. It can be done by PHP.
Follow the below steps.
1. Connect file with mysql database as follows as:

mysql_connect('server_name','username','password');
mysql_select_db('db_name');

where,
- server_name means localhost,
- username is username of your database
- password is password of your database
- db_name is name of your database

2. Then, you need to sorting tables based on column filed name. So you have to pass the field name in url. Similarly, you sort table values both ascending and descending. So you need to also pass order types in url. By default, table values displays in ascending. You can fixed order types and also field name.

$field='game_ID';
$sort='ASC';

where, the mysql table display values by ascending order based on game_ID

Now your headings should be like this.

<th><a href="table1.php?sorting='.$sort.'&field=game_ID">Game Id</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=category_Name">Category Name</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=game_Title">Game Name</a></th>

where,
- table1.php is the name of file.
- $sort means order type either ascending or descending
- game_ID, category_Name, game_Title are field names in mysql table.

3. Now you need get the values from url.

if(isset($_GET['sorting']))
{
if($_GET['sorting']=='ASC')
{
$sort='DESC';
}
else { $sort='ASC'; }
}
if($_GET['field']=='game_ID')
{
$field = "game_ID";
}
elseif($_GET['field']=='category_Name')
{
$field = "category_Name";
}
elseif($_GET['field']=='game_Title')
{
$field="game_Title";
}

where, you handle your statergies. ie, If sorting value is ascending, then you will sort table by descending. Likewise you'll sort table by ascending, if sort value is descending. Then you need to get column field values.

4. Then you write a query in which both order types and field name should be present. The mysql query should be like this.

SELECT game_ID, category_Name, game_Title FROM yobash_game ORDER BY $field $sort

where,
- $filed is a default field name ie, gameId
- $sort is a default order type already we fixed. ie. ASC

Sorting column by clicking column header

5. Finally combine all the PHP codes as follows as:

table1.php

<?php
mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('db_name') or die(mysql_error());
$field='game_ID';
$sort='ASC';
if(isset($_GET['sorting']))
{
if($_GET['sorting']=='ASC')
{
$sort='DESC';
}
else
{
$sort='ASC';
}
}
if($_GET['field']=='game_ID')
{
$field = "game_ID";
}
elseif($_GET['field']=='category_Name')
{
$field = "category_Name";
}
elseif($_GET['field']=='game_Title')
{
$field="game_Title";
}
$sql = "SELECT game_ID, category_Name, game_Title FROM yobash_game ORDER BY $field $sort";
$result = mysql_query($sql) or die(mysql_error());
echo'<table border="1">';
echo'<th><a href="table1.php?sorting='.$sort.'&field=game_ID">Game Id</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=category_Name">Category Name</a></th>
<th><a href="table1.php?sorting='.$sort.'&field=game_Title">Game Name</a></th>';
while($row = mysql_fetch_array($result))
{
echo'<tr><td>'.$row['game_Id'].'</td><td>'.$row['category_Name'].'</td><td>'.$row['game_Title'].'</td></tr>';
}
echo'</table>';
?>

Finally you'll get PHP scripts for sorting table when you click the column filed name. Now you can sort tables as like as tables in mysql database.

Related Post:
Simple pagination concepts using php and mysql
Pagination using php, mysql and ajax

Pages

15 Jul 2014

Add content type:

Add name and download excel file:

Add content to excel spreadsheet:

13 Jul 2014

Login form using php and mysql:

Fogot password in php:

7 Jul 2014

Remember me in login form using php:

Signout in php:

6 Jul 2014

Simple login validation using php and mysql:

Signout in php:

2 Jul 2014

Sitemap:

Structure of sitemap:

Create sitemap dynamically using PHP and MySQL:

.htaccess:

25 Jun 2014

Store array into cookies in php using serialize():

Retrieve array values from cookies in PHP using unserialize():

Store multiple values into cookies in PHP using json_encode():

Retrieve array values from cookies in PHP using json_decode();

23 Jun 2014

Store array values to session in PHP:

Store multiple (array) values into session in PHP on form submit:

16 Jun 2014

Common errors in php:

Parse error:

Parse error by unclosed quotes in php:

Parse error by missing semicolon in php:

Parse error by unclosed braces in php:

Fatal error in php:

Waring in php:

Noticed error in php:

11 Jun 2014

Mail() in php:

How to send mail using php:

2 Jun 2014

Cookies in php:

Create cookies in php:

Retrieve cookies in php:

Delete cookies in php:

22 May 2014

Session in php:

session_start() in php:

session_destroy() in php:

unset() in php:

14 May 2014

Pagination using juery and ajax:

The overall php script for pagination:

12 May 2014

Sorting column with pagination by clicking column header:

7 May 2014

Sorting column by clicking column header