3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $xml = new SimpleXMLElement('<tag></tag>'); echo 'An empty SimpleXMLElement is '; var_export((bool) $xml); echo "\n"; $xml = new SimpleXMLElement('<tag>data</tag>'); echo 'A SimpleXMLElement with data is '; var_export((bool) $xml); echo "\n"; $obj = new stdClass(); echo 'An empty stdClass is '; var_export((bool) $obj); echo "\n"; class A { public function __toString() { return ''; } } $a = new A(); echo 'A class that returns an empty string from __toString() is '; var_export((string) $a);
based on 4Xk4v
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
An empty SimpleXMLElement is false A SimpleXMLElement with data is true An empty stdClass is true A class that returns an empty string from __toString() is ''
Output for 5.0.0 - 5.1.6
An empty SimpleXMLElement is false A SimpleXMLElement with data is true An empty stdClass is true A class that returns an empty string from __toString() is 'Object id #3'
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/3qlqu on line 18
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/3qlqu on line 18
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/3qlqu on line 18
Process exited with code 255.