Question Detail

please elaborate your question.
I am not getting you.

1. function phonenumber(inputtxt)  
2. {  
3.   var phoneno = /^\d{10}$/;  
4.   if((inputtxt.value.match(phoneno))  
5.         {  
6.       return true;  
7.         }  
8.       else  
9.         {  
10.         alert("message");  
11.         return false;  
12.         }  
13. } 

Try something like this :

$phoneNumber = $_POST['mobileno'];

if(!empty($phoneNumber)) // phone number is not empty
{
    if(preg_match('/^\d{10}$/',$phoneNumber)) // phone number is valid
    {
      $phoneNumber = '0' . $phoneNumber;

      // your other code here
    }
    else // phone number is not valid
    {
      echo 'Phone number invalid !';
    }
}
else // phone number is empty
{
  echo 'You must provid a phone number !';
}

pattern="^[0-9\-\+\s\(\)]*$" 
 

Try this it may help you :)

have u found any answer