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Website Programming in PHP / MYSQL
is_resource
(PHP 4, PHP 5)
is_resource — Finds whether a variable is a resource
Parameters
- var
-
The variable being evaluated.
Return Values
Returns TRUE if var is a resource, FALSE otherwise.
Examples
Example #1 is_resource() example
<?php
$db_link = @mysql_connect('localhost', 'mysql_user', 'mysql_pass');
if (!is_resource($db_link)) {
die('Can\'t connect : ' . mysql_error());
}
?>
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