3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace bar; $a = FOO; // produces notice - undefined constants "FOO" assumed "FOO"; $a = \FOO; // fatal error, undefined namespace constant FOO $a = Bar\FOO; // fatal error, undefined namespace constant bar\Bar\FOO $a = \Bar\FOO; // fatal error, undefined namespace constant Bar\FOO ?>
based on 0EhLI
Output for 7.0.0 - 7.1.0
Notice: Use of undefined constant FOO - assumed 'FOO' in /in/JSJcO on line 3 Fatal error: Uncaught Error: Undefined constant 'FOO' in /in/JSJcO:4 Stack trace: #0 {main} thrown in /in/JSJcO on line 4
Process exited with code 255.
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0
Notice: Use of undefined constant FOO - assumed 'FOO' in /in/JSJcO on line 3 Fatal error: Undefined constant 'FOO' in /in/JSJcO on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/JSJcO on line 2
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_STRING in /in/JSJcO on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/JSJcO on line 2
Process exited with code 255.