3v4l.org

run code in 200+ php & hhvm versions
<?php spl_autoload_register(function($className) { $bt = debug_backtrace(0, 2); $bt = (isset($bt[0]["file"]) ? $bt[0] : $bt[1]); // php has an internal stack frame at [0], hhvm doesn't echo "Loading {$className} from {$bt["file"]}:{$bt["line"]}\n"; eval("class {$className} { }"); }); var_dump(new FooClass());
Output for 5.4.0 - 5.6.38, hhvm-3.10.1 - 3.21.3, 7.0.0 - 7.2.11
Loading FooClass from /in/ov3Me:10 object(FooClass)#2 (0) { }
Output for hhvm-3.22.0
Loading FooClass from /in/ov3Me:-1 object(FooClass)#2 (0) { }
Output for 5.3.0 - 5.3.29
Warning: debug_backtrace() expects at most 1 parameter, 2 given in /in/ov3Me on line 4 Loading FooClass from : object(FooClass)#2 (0) { }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/ov3Me on line 3
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_FUNCTION, expecting ')' in /in/ov3Me on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/ov3Me on line 3
Process exited with code 255.