3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $students=array( "name"=>array("akash","jag", "rahul"), "id"=>array(01,02,03), "age"=>array(22,22,22), ); /*print_r($students); unset($students["name"][0]); print_r($students); */ //print_r(array_values($students)); print_r(array_key($students));
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function array_key() in /in/4S76c:12 Stack trace: #0 {main} thrown in /in/4S76c on line 12
Process exited with code 255.
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0
Fatal error: Call to undefined function array_key() in /in/4S76c on line 12
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_key() in /in/4S76c on line 12
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_key() in /in/4S76c on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_key() in /in/4S76c on line 12