multi arguments for function

[www.phpbasic.com]

Hi guys, I've 2 function as:
function a($arg1,$arg2,...,$argn){
echo '....';
}
and i dont know numbers of argument on function a() and i have a
array()
$arr = array('arg1,',arg2',.....,'argn');
now, how to get a('arg1','arg2',........,'argn') with
'arg1','arg2',......... are implements of array $arr;

[=?UTF-8?B?SXbDoW4gU8OhbmNoZXogT3J0ZWdh?=]

http://php.net/manual/en/ref.funchand.php

--
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Iván Sánchez Ortega -ivan-algarroba-sanchezortega-punto-es-

You may my glories and my state dispose,
But not my griefs; still am I king of those.
-- William Shakespeare, "Richard II"