3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($var) { &$GLOBALS['a']++; //$var++; debug_zval_dump($var); //$GLOBALS['var']++; echo $var; echo $GLOBALS['a']; // echo $GLOBALS['var']; } $a = 0; $GLOBALS['a']++; debug_zval_dump($a); test($a); echo $GLOBALS['a']; echo $a;
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '&' in /in/WD84O on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '&' in /in/WD84O on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WD84O on line 5
Process exited with code 255.
preferences:
210 ms | 1395 KiB | 117 Q