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run code in 150+ php & hhvm versions
Bugs & Features
<?php function& test($arr = array()) { global $g_arr; $g_arr =& $arr; var_dump($arr); } test(); var_dump($g_arr);
Output for 4.4.0 - 4.4.9, 5.1.0 - 5.6.28, 7.0.0 - 7.1.0
array(0) { } Notice: Only variable references should be returned by reference in /in/bioEm on line 6 NULL
Output for 4.3.0 - 4.3.11, hhvm-3.10.0 - 3.12.0
array(0) { } NULL
Output for 5.0.0 - 5.0.5
array(0) { } Strict Standards: Only variable references should be returned by reference in /in/bioEm on line 6 NULL