[leeprice2006]

how can i find if a string contains a certain string,

basically what i want to do is:

PHP Code:

<?php



$email = $_POST['email'];



if($email containts "@hotmail.com") {

   echo("Can not use an hotmail address");

}

?>

[leeprice2006]

ignore this post, i've just give myself a flash course in regular expressions and found the answer

[Keith]

No need for regular expressions. Have a look at strpos() and stripos() if all you're looking for is a string.

PHP Code:

$email = 'user@hotmail.com';

if ( stripos( $email, 'hotmail.com' ) !== FALSE )
{
    echo 'Cannot use a hotmail address';
} 

...or you could use:

PHP Code:

$email    = 'user@hotmail.com';
$provider = strtolower( end( explode( '@', $email ) ) );

if ( $provider == 'hotmail.com' )
{
    echo 'Cannot use a hotmail address';
} 

...in case, for whatever reason, hotmail.com is part of their valid email, ie: hotmail.com@gmail.com.

You could also peek at strstr() and stristr():

PHP Code:

$email    = 'user@hotmail.com';
$provider = strtolower( strstr( '@', $email ) );

if ( $provider == '@hotmail.com' )
{
    echo 'Cannot use a hotmail address';
} 

Searching by string is much faster than searching by regular expression.