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run code in 150+ php & hhvm versions
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<?php $arr = array( Array('weight' => '317.51474856007','reps' => '10'), Array('weight' => 50,'reps' => 10), Array('reps' => 10), Array('reps' => 10) ); array_walk_recursive($arr, function($v, $k) use ($count){if(array_key_exists($k, $count))$count[$k]++;else $count[$k]=1;});
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: count in /in/pd5HH on line 10 Warning: array_key_exists() expects parameter 2 to be array, null given in /in/pd5HH on line 10 Warning: array_key_exists() expects parameter 2 to be array, null given in /in/pd5HH on line 10 Warning: array_key_exists() expects parameter 2 to be array, null given in /in/pd5HH on line 10 Warning: array_key_exists() expects parameter 2 to be array, null given in /in/pd5HH on line 10 Warning: array_key_exists() expects parameter 2 to be array, null given in /in/pd5HH on line 10 Warning: array_key_exists() expects parameter 2 to be array, null given in /in/pd5HH on line 10
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: count in /in/pd5HH on line 10 Warning: Invalid operand type was used: array_key_exists expects an array or an object; false returned. in /in/pd5HH on line 10 Warning: Invalid operand type was used: array_key_exists expects an array or an object; false returned. in /in/pd5HH on line 10 Warning: Invalid operand type was used: array_key_exists expects an array or an object; false returned. in /in/pd5HH on line 10 Warning: Invalid operand type was used: array_key_exists expects an array or an object; false returned. in /in/pd5HH on line 10 Warning: Invalid operand type was used: array_key_exists expects an array or an object; false returned. in /in/pd5HH on line 10 Warning: Invalid operand type was used: array_key_exists expects an array or an object; false returned. in /in/pd5HH on line 10
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/pd5HH on line 10
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/pd5HH on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/pd5HH on line 10
Process exited with code 255.