<?php

error_reporting(-1);
mb_internal_encoding('utf-8');
$number = "+7892()326  ()-()2_032";
$clearNum= preg_replace('/\D/',"",$number);
if (mb_strlen($clearNum) == 11) {
	if (mb_substr ($clearNum,0,1)=='/7|8/'){
		$clearNum = preg_replace('/^7/',8,$clearNum);
		echo "clearNum";
		exit("stop");
	}else{ 
		echo "error э$clearNumэ";
}
}