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run code in 150+ php & hhvm versions
Bugs & Features
<?php class FalseObject { public function __toString() { // return an empty string that in PHP evaluates to false return ''; } } $false = new FalseObject(); if ( $false ) { print $false . ' is false.'; } else { print $false . ' is true.'; } print '<br />'; if ( !$false ) { print $false . ' is really true.'; } else { print $false . ' is really false.'; }
Output for 5.2.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
is false.<br /> is really false.
Output for 5.0.0 - 5.1.6
Object id #1 is false.<br />Object id #1 is really false.
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/IWYnW</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/IWYnW</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in <b>/in/IWYnW</b> on line <b>4</b><br />
Process exited with code 255.