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run code in 150+ php & hhvm versions
Bugs & Features
<?php Interface Singleton{public static function instance();} if (class_exists('Singleton')) { $reason = 'class already exists'; } else { class Singleton{ static function getInstance(){ return true; } } }
Output for 7.0.0 - 7.1.0
Fatal error: Cannot declare class Singleton, because the name is already in use in /in/RBgcu on line 7
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
Fatal error: Class already declared: Singleton in /in/RBgcu on line 7
Process exited with code 255.
Output for 5.2.0 - 5.6.28
Fatal error: Cannot redeclare class Singleton in /in/RBgcu on line 7
Process exited with code 255.
Output for 5.0.2 - 5.1.6
Fatal error: Cannot redeclare class singleton in /in/RBgcu on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.1
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/RBgcu on line 3
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 in /in/RBgcu on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/RBgcu on line 3
Process exited with code 255.