get_resources()
get_resources() — Returns active resources.
Built-in function of PHP 8.5. The manual lists it as available in 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
Returns an array of all currently active resources, optionally filtered by resource type.
Signature
get_resources(?string $type = null): array
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $type | ?string | If defined, this will cause get_resources() to only return resources of the given type. A list of resource types is available. |
Return value
Returns an array of currently active resources, indexed by resource number.
Example
A runnable snippet:
$fp = tmpfile(); var_dump(get_resources());
Output:
array(1) { [1]=> resource(1) of type (stream) }
Changelog
| Version | Change |
|---|---|
| 8.0.0 | type is nullable now. |
See also
get_loaded_extensions(), get_defined_constants(), get_defined_functions(), get_defined_vars()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page get_resources() (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.