3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class PHPApprentice { private static $velocity = ''; private static $initialized = false; public static function initialize () { if ( self::initialized ) return; self::$initialized = true; self::$velocity = 'fast!'; } public static function getVelocity () { self::initialize(); return self::$velocity; } public static function setVelocity ( $value ) { self::$velocity = $value; } } PHPApprentice::setVelocity ( 'Ludicrous Speed!!' ); echo PHPApprentice::getVelocity();
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Undefined class constant 'initialized' in /in/b3ZL4:9 Stack trace: #0 /in/b3ZL4(18): PHPApprentice::initialize() #1 /in/b3ZL4(28): PHPApprentice::getVelocity() #2 {main} thrown in /in/b3ZL4 on line 9
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
Fatal error: Couldn't find constant PHPApprentice::initialized in /in/b3ZL4 on line 9
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Undefined class constant 'initialized' in /in/b3ZL4 on line 9
Process exited with code 255.
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/b3ZL4 on line 4
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/b3ZL4 on line 4
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/b3ZL4 on line 4
Process exited with code 255.