3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a= array('mela'=>'pera','mela'=>'pera','arancia'=>'mela'); $b= array_diff_key( $a , array_unique( $a ) ); $i=0; print_r($b); print_r($b[1]);
based on 1JCeo
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Array ( ) Notice: Undefined offset: 1 in /in/Va02L on line 7
Output for hhvm-3.10.0 - 3.12.0
Array ( ) Notice: Undefined index: 1 in /in/Va02L on line 7
Output for 5.1.0 - 5.2.17
Array ( ) Notice: Undefined offset: 1 in /in/Va02L on line 7
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_diff_key() in /in/Va02L on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_diff_key() in /in/Va02L on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_diff_key() in /in/Va02L on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_diff_key() in /in/Va02L on line 4