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run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = Array ( 0 => array( 'Product' => array('id' => 21) ), 1 => array( 'Product' => array( 'id' => 43, 'children' => array( 0 => array( 'Product' => array('id' => 123) ), 1 => array( 'Product' => array('id' => 4323) ), 2 => array( 'Product' => array('id' => 3423) ) ) ) ), 2 => array( 'Product' => array('id' => 534) ) ); $keys = array_keys(array_column($array, 'id'), 1); $new_array = array_map(function($k) use ($array){return $array[$k];}, $keys); print_r($new_array);
based on 7kodp
Output for 5.5.24 - 7.2.0
Array ( )
Output for 5.3.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/1icOV on line 29
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/1icOV on line 30
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, expecting ')' in /in/1icOV on line 30
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/1icOV on line 30
Process exited with code 255.