3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Queue { private $arr = []; public function enqueue(&$e) { \array_unshift($this->arr, [&$e]); } public function &dequeue() { return {\array_pop($this->arr)}[0]; } public function is_empty() { return empty($this->arr); } } $q = new Queue(); $a = [42, 124, 35]; $q->enqueue($a); $a[] = 1337; $b = $q->dequeue(); $b[] = 12345; var_dump($a); var_dump($b);

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).

VersionSystem time (s)User time (s)Memory (MiB)
7.1.60.0900.01333.14
7.1.50.0870.00332.56
7.1.40.1000.00732.45
7.1.30.1130.00332.46
7.1.20.1430.01732.38
7.1.10.0730.01014.67
7.1.00.1100.01014.51
7.0.200.0770.01314.44
7.0.190.0830.00314.64
7.0.180.0800.01014.32
7.0.170.0830.01014.16
7.0.160.0930.01014.08
7.0.150.0730.01314.16
7.0.140.1300.02014.16
7.0.130.1170.01014.50
7.0.120.0930.01014.59
7.0.110.1600.00714.17
7.0.100.1130.01014.27
7.0.90.1000.00714.20
7.0.80.0030.01014.36
7.0.70.0800.01014.16
7.0.60.0970.01014.00
7.0.50.0770.00714.40
7.0.40.0070.00714.36
7.0.30.0630.00714.46
7.0.20.0670.00714.29
7.0.10.0700.00714.63
7.0.00.0370.01014.41

preferences:
141.08 ms | 1394 KiB | 7 Q