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# is_resource

(PHP 4, PHP 5)

is_resource -- Finds whether a variable is a resource

## Description

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 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()); } ?>`

## See Also

The resource-type documentation
get_resource_type()

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