3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo implements iterator { public function current() { } public function next() { } public function key() { } public function valid() { } public function rewind() { } } $foo = new foo(); foreach($foo as &$ref) {}
based on 0QMPO
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: An iterator cannot be used with foreach by reference in /in/rGdpT:16 Stack trace: #0 {main} thrown in /in/rGdpT on line 16
Process exited with code 255.
Output for 5.2.0 - 5.6.28, hhvm-3.12.0
Fatal error: An iterator cannot be used with foreach by reference in /in/rGdpT on line 16
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.1.6
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/rGdpT 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 T_STRING, expecting '{' in /in/rGdpT on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/rGdpT on line 2
Process exited with code 255.