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run code in 150+ php & hhvm versions
Bugs & Features
<?php $categories = array('Movie'); $reviews = array( array('category' => 'Movie'), array('category' => 'Movie'), array('category' => 'Movie'), array('category' => 'Movie'), array('category' => 'Game') ); print_r($reviews); $filtered = array_filter($reviews, function($review) { return in_array($review['category'], $categories); }); print_r($filtered);
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Array ( [0] => Array ( [category] => Movie ) [1] => Array ( [category] => Movie ) [2] => Array ( [category] => Movie ) [3] => Array ( [category] => Movie ) [4] => Array ( [category] => Game ) ) Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be array, null given in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be array, null given in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be array, null given in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be array, null given in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be array, null given in /in/WDnCP on line 16 Array ( )
Output for hhvm-3.12.0
Array ( [0] => Array ( [category] => Movie ) [1] => Array ( [category] => Movie ) [2] => Array ( [category] => Movie ) [3] => Array ( [category] => Movie ) [4] => Array ( [category] => Game ) ) Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be an array or collection in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be an array or collection in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be an array or collection in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be an array or collection in /in/WDnCP on line 16 Notice: Undefined variable: categories in /in/WDnCP on line 16 Warning: in_array() expects parameter 2 to be an array or collection in /in/WDnCP on line 16 Array ( )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/WDnCP on line 15
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/WDnCP on line 15
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WDnCP on line 15
Process exited with code 255.