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PHP Manual [get_resource_type]

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PHP Manual || Variable handling Functions

(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";
?>



PHP Manual || Variable handling Functions