3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo(&$var) { $var++; } function &bar() // Note the missing & { $a = 5; return $a; } foo(bar()); // Produces fatal error since PHP 5.0.5 foo($a = 5); // Expression, not variable
Output for 7.0.0 - 7.1.0
Notice: Only variables should be passed by reference in /in/B0OqR on line 13
Output for hhvm-3.10.0 - 3.12.0
Strict Warning: Only variables should be passed by reference in /in/B0OqR on line 13
Output for 5.1.2 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/B0OqR on line 13
Output for 4.3.0 - 5.0.5, 5.1.1
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/B0OqR on line 13
Process exited with code 255.