Algorithms/Find maximum/Php method 1

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<?
function findMax($i_intaryTab){
	if(count($i_intaryTab) == 1){
		return $i_intaryTab[0];
	}
	elseif(count($i_intaryTab) == 0){
		return 0;
	}
	else{
		$o_intMax = $i_intaryTab[0];
 
		for($i = 1;$i < count($i_intaryTab);$i++){
			if($i_intaryTab[$i] >$o_intMax){
				$o_intMax = $i_intaryTab[$i];
			}
		}
		return $o_intMax;
	}
}
$testArray = array(4,5,8,7,5,45,5777);
echo findMax($testArray);
?>