3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $params = ['a' => 'b']; array_filter($params, function ($v, $k) { return substr($k, 0, 7) == 'filter_'; });
Output for 7.1.0 - 7.2.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/GkoN1:3 Stack trace: #0 [internal function]: {closure}('b') #1 /in/GkoN1(5): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/GkoN1 on line 3
Process exited with code 255.
Output for 5.4.9 - 7.0.20
Warning: Missing argument 2 for {closure}() in /in/GkoN1 on line 3 Notice: Undefined variable: k in /in/GkoN1 on line 4
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/GkoN1 on line 2
Process exited with code 255.