3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class Foo { abstfact public function bar(); } class Bar extends Foo {}
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected 'abstfact' (T_STRING), expecting function (T_FUNCTION) in /in/FtUDh on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_STRING, expecting T_FUNCTION in /in/FtUDh on line 5
Process exited with code 255.
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