3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 'foo' => 'bar', 'key' => 'value' ); $start = time(true); $a = isset($arr['foo']); $b = isset($arr['bar']); var_dump(time(true) - $start); $start = time(true); $a = array_key_exists('foo', $arr); $b = array_key_exists('bar', $arr); var_dump(time(true) - $start);
Output for 7.3.0 - 7.3.1
Warning: time() expects exactly 0 parameters, 1 given in /in/sjWln on line 8 Warning: time() expects exactly 0 parameters, 1 given in /in/sjWln on line 11 int(0) Warning: time() expects exactly 0 parameters, 1 given in /in/sjWln on line 13 Warning: time() expects exactly 0 parameters, 1 given in /in/sjWln on line 16 int(0)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13
int(0) int(0)
preferences:
155.33 ms | 404 KiB | 250 Q