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@ 2013-12-11T17:06:06Z

<?php
abstract class AbstractClass
{
    abstract function __construct();


    
    // Our abstract method only needs to define the required arguments
    abstract protected function prefixName($name);

}

class ConcreteClass extends AbstractClass
{
    public function __construct($a=9) {
echo $a;

    }
    // Our child class may define optional arguments not in the parent's signature
    public function prefixName($name, $separator=0 ) {
        if ($name == "Pacman") {
            $prefix = "Mr";
        } elseif ($name == "Pacwoman") {
            $prefix = "Mrs";
        } else {
            $prefix = "";
        }
        return "{$prefix}{$separator} {$name}";
    }
}

$class = new ConcreteClass(666699990000);
echo $class->prefixName("Pacman"), "\n";
echo $class->prefixName("Pacwoman"), "\n";
?>

Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: 666699990000Mr0 Pacman Mrs0 Pacwoman
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_CLASS in /in/rGOuP on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_CLASS in /in/rGOuP on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/rGOuP on line 2
Process exited with code 255.

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