Gets information about the garbage collector

# gc_status

(PHP 7 >= 7.3.0, PHP 8)

gc_status — Gets information about the garbage collector

### Description

gc_status(): array

Gets information about the current state of the garbage collector.

### Parameters

This function has no parameters.

### Return Values

Returns an associative array with the following elements:

- `"runs"`
- `"collected"`
- `"threshold"`
- `"roots"`
- `"running"`
- `"protected"`
- `"full"`
- `"buffer_size"`
- `"application_time"`
- `"collector_time"`
- `"destructor_time"`
- `"free_time"`

### Changelog

Version | Description
--- | ---
8.3.0 | gc_status() now returns the following additional fields: `"running"`, `"protected"`, `"full"`, `"buffer_size"`, `"application_time"`, `"collector_time"`, `"destructor_time"`, and `"free_time"`.

### Examples

Example #1 gc_status() Usage

`<?php
// create object tree that needs gc collection
$a = new stdClass();
$a->b = [];
for ($i = 0; $i < 100000; $i++) {
$b = new stdClass();
$b->a = $a;
$a->b[] = $b;
}
unset($a);
unset($b);
gc_collect_cycles();
var_dump(gc_status());`

The above example will output something similar to:

    array(4) {
      ["runs"]=>
      int(5)
      ["collected"]=>
      int(100002)
      ["threshold"]=>
      int(50001)
      ["roots"]=>
      int(0)
    }

Output of the above example in PHP 8.3 is similar to:

    array(12) {
      ["running"]=>
      bool(false)
      ["protected"]=>
      bool(false)
      ["full"]=>
      bool(false)
      ["runs"]=>
      int(5)
      ["collected"]=>
      int(100002)
      ["threshold"]=>
      int(50001)
      ["buffer_size"]=>
      int(131072)
      ["roots"]=>
      int(0)
      ["application_time"]=>
      float(0.031182458)
      ["collector_time"]=>
      float(0.020106291)
      ["destructor_time"]=>
      float(0)
      ["free_time"]=>
      float(0.003707167)
    }

### See Also

- Garbage Collection

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