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run code in 300+ PHP versions simultaneously
<?php interface Dog { public function woof(); } class Terrier implements Dog { public function woof() { echo 'woof'; } } class Staffie extends Terrier() { } $dog = new Staffie(); $dog->woof();
Output for 5.3.4 - 5.3.27, 5.4.0 - 5.4.21
Parse error: syntax error, unexpected '(', expecting '{' in /in/1UAbr on line 13
Process exited with code 255.

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