gc_status()

(PHP 7 >= 7.3.0)

Gets information about the garbage collector

说明

gc_status(void): array

Gets information about the current state of the garbage collector.

参数

此函数没有参数。

返回值

Returns an associative array with the following elements:

• "runs"
• "collected"
• "threshold"
• "roots"

范例

Example #1gc_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());

以上例程的输出类似于：

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

参见

• Garbage Collection