$tel='验证的电话号码';

$isMob="/^1[3-5,8]{1}[0-9]{9}$/";
$isTel="/^([0-9]{3,4}-)?[0-9]{7,8}$/";

$rules= [

'name'=>"required",
'phone'=>'required|{$isMob}',
'byphone'=>'regex:$isTel',
'adds'=>'required',
'email'=>'required|email'
];

if(!preg_match($isMob,$tel) && !preg_match($isTel,$tel))
{
 echo '<script>alert("手机或电话号码格式不正确。如果是固定电话，必须形如(xxxx-xxxxxxxx)!");history.go(-1);</script>';
 exit ();  
}