3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array["a"=>[]]; echo isset($array["a"])?"Yes":"No";
Output for 5.4.0 - 5.4.24
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ']' in /in/Bq9o8 on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_DOUBLE_ARROW, expecting ']' in /in/Bq9o8 on line 2
Process exited with code 255.
preferences:
172.63 ms | 1395 KiB | 61 Q