3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo() { bar(123); } function bar() { baz(456); } function baz() { var_dump(debug_backtrace(0, 2)[2]); } foo();
Output for 5.4.0 - 7.2.0
Notice: Undefined offset: 2 in /in/YZpPV on line 5 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/YZpPV on line 5
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 '[' in /in/YZpPV on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YZpPV on line 5
Process exited with code 255.