Online PHP editor | perf for XBPgY

@ 2017-01-19T21:36:30Z

<?php

class Leak {
  static protected function &leaked(array &$array = null) {
    $array = array('one');
    return $array;
  }

  public function toLeaked($array = null) {
    $array = static::leaked($array);
    return $array;
  }

  public function testLeak() {
    echo "memory before loop: " . memory_get_usage(true) . PHP_EOL;
    for ($i = 0; $i < 20000; $i++) {
      $leak = $this->toLeaked();
    }
    gc_collect_cycles();
    echo "memory after loop: " . memory_get_usage(true) . PHP_EOL;
  }
}

$leak = new Leak();
$leak->testLeak();

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
7.2.0	0.000	0.013	19.45
7.1.7	0.006	0.003	17.23
7.1.6	0.007	0.007	17.32
7.1.5	0.006	0.013	17.00
7.1.1	0.017	0.073	22.34
7.1.0	0.010	0.067	22.64
7.0.20	0.013	0.010	16.88
7.0.14	0.037	0.067	28.13
7.0.13	0.040	0.060	28.34
7.0.12	0.023	0.067	28.41
7.0.11	0.037	0.070	28.35
7.0.10	0.030	0.053	28.49
7.0.9	0.023	0.067	28.45
7.0.8	0.020	0.057	28.47
7.0.7	0.027	0.060	28.40
7.0.6	0.030	0.067	28.42
7.0.5	0.040	0.047	28.34
7.0.4	0.020	0.067	28.50
7.0.3	0.027	0.063	28.53
7.0.2	0.050	0.060	28.49
7.0.1	0.023	0.077	28.44
7.0.0	0.017	0.063	28.52

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