get_resource_type()

get_resource_type() — Returns the resource type.

Built-in function of PHP 8.5. The manual lists it as available in PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

This function gets the type of the given resource.

Signature

get_resource_type(resource $resource): string

Parameters

Return value

If the given resource 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 resource is not a resource.

Example

A runnable snippet:

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

Output:

stream

See also

get_resource_id()

All PHP 8.5 built-in functions

Reference card built from the PHP manual page get_resource_type() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.