3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'x'; debug_zval_dump($a) b($a); function b($a){ debug_zval_dump($a);//refcount=4 why not 3? }
Output for 5.4.0 - 5.4.15
Parse error: syntax error, unexpected 'b' (T_STRING) in /in/W0UEQ on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.25
Parse error: syntax error, unexpected T_STRING in /in/W0UEQ on line 4
Process exited with code 255.
preferences:
176.78 ms | 1395 KiB | 49 Q