get_resource_type

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

get_resource_type — Returns the resource type

Description

get_resource_type ( resource $handle ) : string

This function gets the type of the given resource.

Parameters

handle: The evaluated resource handle.

Return Values

If the given handle is a resource, this function will return a string representing its type. If the type is not identified by this function, the return value will be the string Unknown.

This function will return NULL and generate an error if handle is not a resource.

Changelog

Version	Description
5.3.0	If `handle` is not a resource this functions returns `NULL`. Formerly, `FALSE` has been returned.

Examples

Example #1 get_resource_type() example


<?php
// prints: mysql link
$c = mysql_connect();
echo get_resource_type($c) . "\n";

// prints: stream
$fp = fopen("foo", "w");
echo get_resource_type($fp) . "\n";

// prints: domxml document
$doc = new_xmldoc("1.0");
echo get_resource_type($doc->doc) . "\n";
?>