3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '".$foo['nonexisting']."'; echo "1 $foo[nonexisting] 2", "3 " '".$foo['nonexisting']."' 4";
Output for 5.4.0 - 5.4.25
Parse error: syntax error, unexpected 'nonexisting' (T_STRING), expecting ',' or ';' in /in/e10rb on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /in/e10rb on line 2
Process exited with code 255.

preferences:
188.9 ms | 1395 KiB | 62 Q