Wednesday, April 22, 2009
Use preg_match OR preg_match_all to solve this problem.Here i have given simple Example for taking name and image format or extension and stored it in array:
Example1: Taking name and image format or extension from
<img src>
Here is the code:
$url=‘<img src="http://www.computereducationworld.com/logo.jpg">’;
preg_match_all(‘/ (src)(\=\’|\=\”)http:\/\/([a-zA-Z0-9\-\_\/\.]+|)\/([a-zA-Z0-9\-\_]+)\.([a-zA-Z]+)(\’|\”)/’,$url,$ImagesArray1,PREG_SET_ORDER);
print_r($ImagesArray1);
Output:
Array (
[0] => Array (
[0] => src="http://www.computereducationworld.com/logo.jpg"
[1] => src
[2] => ="
[3] [...]
This trick force for a secure HTTP connection
if (!($HTTPS == “on”)) {
header (”Location: https://$SERVER_NAME$php_SELF”);
exit;
}
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Redirect to another page in PHP..Here is the code:
<?
header(“Location: http://www.computereducationworld.com/”);
exit(0);
?>
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Display date and time with PHP:
<?
/* Today is March 9, 2009, 6:25 am */
$today = date(“F j, Y, g:i a”); // March 9, 2009, 6:25 am
$today = date(“m.d.y”); // 03.09.09
$today = date(“j, n, Y”); // 9, 3, 2009
$today = date(“Ymd”); // 20090309
$today = date(“D M j G:i:s T Y”);// Mon Mar 9 6:25:11 [...]
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This trick helps you to send an alert mail when there is a new registration on your site or when there is some critical error in your PHP script.
<?
mail(“recipient@example.com”,
“email subject”,
“Body of the message”,
“From: webmaster@mydomain.com\r\n”);
?>
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How to optimize PHP database table… Here code goes:
dbConnect()
$alltables = mysql_query(”SHOW TABLES”);
while ($table = mysql_fetch_assoc($alltables))
{
foreach ($table as $db => $tablename)
{
mysql_query(”OPTIMIZE TABLE ‘”.$tablename.”‘”)
or die(mysql_error());
}
}
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This trick helps you protect your web page with a help of a password…Here is the code:
<?
$username = “someuser”;
$password = “somepassword”;
if ($_POST[‘txtUsername’] != $username || $_POST[‘txtPassword’] != $password) {?>
<h1>Login</h1>
<form name=”form” method=”post” action=”<?php echo $_SERVER[‘PHP_SELF’]; ?>”>
<p><label for=”txtUsername”>Username:</label>
<br><input type=”text” title=”Enter your Username” name=”txtUsername”></p>
<p><label for=”txtpassword”>Password:</label>
<br><input type=”password” title=”Enter your password” name=”txtPassword”></p>
<p><input type=”submit” name=”Submit” value=”Login”></p>
</form>
<?} else {?>
<p>This is the [...]
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