3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(-1); $x = array('42' => array('42 => 1, '43' => 3)); $x[42][42] =& $x; echo count($x);
Output for 5.4.0 - 5.4.26
Parse error: syntax error, unexpected '43' (T_LNUMBER), expecting ')' in /in/tUpud on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.28
Parse error: syntax error, unexpected T_LNUMBER, expecting ')' in /in/tUpud on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_LNUMBER, expecting ')' in /in/tUpud on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/tUpud on line 5
Process exited with code 255.