3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( Array('weight' => '317.51474856007','reps' => '10'), Array('weight' => 50,'reps' => 10), Array('reps' => 10), Array('reps' => 10) ); $count = array(); $count = array_map(function($v, $k)use($count){if(array_key_exists($k, $count))$count[$k]++;else $count[$k]=1;}, $arr); print_r($arr);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/WBMNB:10 Stack trace: #0 [internal function]: {closure}(Array) #1 /in/WBMNB(10): array_map(Object(Closure), Array) #2 {main} thrown in /in/WBMNB on line 10
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
Warning: Missing argument 2 for {closure}() in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Warning: Missing argument 2 for {closure}() in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Warning: Missing argument 2 for {closure}() in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Warning: Missing argument 2 for {closure}() in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Notice: Undefined variable: k in /in/WBMNB on line 10 Array ( [0] => Array ( [weight] => 317.51474856007 [reps] => 10 ) [1] => Array ( [weight] => 50 [reps] => 10 ) [2] => Array ( [reps] => 10 ) [3] => Array ( [reps] => 10 ) )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/WBMNB on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/WBMNB on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/WBMNB on line 10
Process exited with code 255.
preferences:
244.4 ms | 401 KiB | 312 Q