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@ 2014-09-08T10:05:39Z

<?php
class A{
	public static $def = array('head'=>array('a'=>'b'),'fields'=>array('a'=>'field_a','b'=>'field_b'));
}

class B extends A
{
	public function __construct()
	{
		B::$def = array_merge(parrent::$def,array('fields'=>array('c'=>'field_c')));
	}
}

var_dump(B::$def);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_merge: documentation ( source)

preferences:dark modelive preview

34.04 ms | 402 KiB | 5 Q