3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array('a' => 12, 'b' => 'foo', 'caution' => array('blubb' => array('bar' => 'baz'))); $start = microtime(true); $obj1 = json_decode(json_encode($arr), false); $end = microtime(true) - $start; echo "Run: " . $end . PHP_EOL;

preferences:
36.14 ms | 402 KiB | 5 Q