3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a= array( 'mela' => 'pera', 'pippo'=> 'pera', 'carlo'=>'banana', 'saverio'=>'pera', 'antonio'=>'banana', ); $b= array_diff_key( $a , array_unique( $a ) ); $i=0; print_r($b); print_r($b[1]);
based on U2aR7
Output for 5.3.0 - 7.1.0
Array ( [pippo] => pera [saverio] => pera [antonio] => banana ) Notice: Undefined offset: 1 in /in/Cf5sL on line 19
Output for 5.1.0 - 5.2.17
Array ( [pippo] => pera [saverio] => pera [antonio] => banana ) Notice: Undefined offset: 1 in /in/Cf5sL on line 19
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_diff_key() in /in/Cf5sL on line 16
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_diff_key() in /in/Cf5sL on line 16
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_diff_key() in /in/Cf5sL on line 16
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_diff_key() in /in/Cf5sL on line 16