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is_resource

Finds whether a variable is a resource (PHP 4, PHP 5)
bool is_resource ( mixed var )

Finds whether the given variable is a resource.

Parameters

var

The variable being evaluated.

Return Values

Returns TRUE if var is a resource, FALSE otherwise.

Examples

Example 2593. is_resource() example

<?php

$db_link
= @mysql_connect('localhost', 'mysql_user', 'mysql_pass');
if (!
is_resource($db_link)) {
   die(
'Can\'t connect : ' . mysql_error());
}

?>