3v4l.org

run code in 500+ PHP versions simultaneously
<?php $ref = new ReflectionFunction('array_unique'); var_dump(count($ref->getParameters())); // outputs "1" in the PHP runtime $ref = new ReflectionFunction('array_search'); var_dump(count($ref->getParameters())); // always outputs "3"
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6
int(0) int(0)
Output for 5.6.17 - 5.6.40, 7.0.1 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
int(2) int(3)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/Tj5cj on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: reflectionfunction in /in/Tj5cj on line 3
Output for 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 - 5.6.16, 7.0.0
int(1) int(3)
preferences:
37.5 ms | 1163 KiB | 21 Q