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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array("test"=>"1", "test2"=>2, "test3"=>3); $needed = array("test", "test2"); $a = array_filter(array($a, $needed), function ($item, $needed) { return in_array($item, $needed); });
based on FnVQX
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/GutRe:6 Stack trace: #0 [internal function]: {closure}(Array) #1 /in/GutRe(8): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/GutRe on line 6
Process exited with code 255.
Output for 5.3.20 - 7.0.20
Warning: Missing argument 2 for {closure}() in /in/GutRe on line 6 Notice: Undefined variable: needed in /in/GutRe on line 7 Warning: in_array() expects parameter 2 to be array, null given in /in/GutRe on line 7 Warning: Missing argument 2 for {closure}() in /in/GutRe on line 6 Notice: Undefined variable: needed in /in/GutRe on line 7 Warning: in_array() expects parameter 2 to be array, null given in /in/GutRe on line 7