3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = <<<XML <?xml version='1.0'?> <document> <title>Forty What?</title> <from>Joe</from> <to>Jane</to> <body> I know that's the answer -- but what's the question? </body> </document> XML; $xml = simplexml_load_string($string); var_dump( isset($xml->undefined), is_null($xml->undefined), $xml->undefined != null, $xml->undefined !== null );
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false) bool(false) bool(true) bool(true)
Output for 5.0.0 - 5.1.6
bool(false) bool(false) bool(false) bool(true)
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: simplexml_load_string() in /in/gBT5h on line 15
Process exited with code 255.
Output for 4.3.2 - 4.4.1, 4.4.3 - 4.4.4
Fatal error: Call to undefined function: simplexml_load_string() in /in/gBT5h on line 15
Process exited with code 255.
Output for 4.4.2
Fatal error: Call to undefined function: simplexml_load_string() in /in/gBT5h on line 16
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: simplexml_load_string() in /in/gBT5h on line 15