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run code in 150+ php & hhvm versions
Bugs & Features
<?php function& test(&$arr = array()) { $GLOBALS['g_arr'] =& $arr; $arr[] = 1; var_dump($arr); } test(); var_dump($g_arr);
Output for 5.1.0 - 7.1.0
array(1) { [0]=> int(1) } Notice: Only variable references should be returned by reference in /in/2A5gM on line 6 array(1) { [0]=> int(1) }
Output for 5.0.0 - 5.0.5
array(1) { [0]=> int(1) } Strict Standards: Only variable references should be returned by reference in /in/2A5gM on line 6 array(1) { [0]=> int(1) }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '=', expecting ')' in /in/2A5gM on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '=', expecting ')' in /in/2A5gM on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/2A5gM on line 2
Process exited with code 255.