<?php
$Massiv=array("1","2","3","1","2","3");

for ($i=0; $i<count($Massiv);$i++)
{
	$temp[]=$Massiv[0];
	for ($j=1;$j<count($Massiv);$j++ )
	{
		if ($Massiv[$i] !== $Massiv[$j])
		$copy[]=$Massiv[$j];		
	}
	
	$Massiv=$copy;
	unset($copy);
	
}
print_r($temp); 
?>