3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('A', 1); if(defined('A')) { function a() { echo "hello from `".__FUNCTION__."`\n"; } } if(defined('B')) { function b() { echo "hello from `".__FUNCTION__."`\n"; } } echo function_exists("b") ? "b is defined\n" : "b is not defined\n"; a(); echo function_exists("b") ? "b is defined\n" : "b is not defined\n"; b(); a(); echo function_exists("b") ? "b is defined\n" : "b is not defined\n";
based on LRVrR
Output for 7.0.0 - 7.1.0
b is not defined hello from `a` b is not defined Fatal error: Uncaught Error: Call to undefined function b() in /in/p9b0e:20 Stack trace: #0 {main} thrown in /in/p9b0e on line 20
Process exited with code 255.
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0
b is not defined hello from `a` b is not defined Fatal error: Call to undefined function b() in /in/p9b0e on line 20
Process exited with code 255.
Output for 4.4.5 - 4.4.9
b is not defined hello from `a` b is not defined Fatal error: Call to undefined function: b() in /in/p9b0e on line 20
Process exited with code 255.
Output for 4.3.2 - 4.4.4
b is not defined hello from `a` b is not defined Fatal error: Call to undefined function: b() in /in/p9b0e on line 20
Process exited with code 255.
Output for 4.3.0 - 4.3.1
b is not defined hello from `a` b is not defined Fatal error: Call to undefined function: b() in /in/p9b0e on line 20