3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'foo'; $b = & $a; $c = & 'moo'; $vars = get_defined_vars(); $vars['a'] = 'OMG'; $vars['c'] = 'Pie'; var_dump($a, $b, $c);
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected ''moo'' (T_CONSTANT_ENCAPSED_STRING) in /in/LUNCH on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/LUNCH on line 5
Process exited with code 255.

preferences:
177.93 ms | 1395 KiB | 53 Q