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@ 2015-03-20T13:44:48Z

<?php
class A {
    
    const PROP_1 = 'prop';
    const PROP_2 = 'more_prop';
    
    private static $props = [
        self::PROP_1,
        self::PROP_2,
    ];
    
    public function setProp($prop) {
        if (!in_array($prop, self::$props)) {
            throw new InvalidArgumentException();
        }
        
        $this->prop = $prop;
    }
}

$a = new A();
$a->setProp(0);

var_dump($a);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
in_array: documentation ( source)

preferences:dark modelive preview

28.19 ms | 402 KiB | 5 Q