gc_status

(PHP 7 >= 7.3.0, PHP 8)

gc_statusGets 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"

Examples

Example #1 gc_status() Usage

<?php

// create object tree that needs gc collection
$a = new stdClass();
$a->= [];
for (
$i 0$i 100000$i++) {
    
$b = new stdClass();
    
$b->$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)
}

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