如何从PHP中删除Indian Mobile Numbers中的国家/地区代码？

Question

I'm receiving mobile numbers with country code (in 12 digits) from a API response. But I need the mobile number without the country code (in 10 digits).

What I'm receiving:

919999999999  

What I need:

9999999999  

What I have tried:

$mobile = "919999999999";
$split = preg_split("/[\]+/", $mobile);
$newmobile = $split[2].$split[3].$split[4].$split[5].$split[6].$split[7].$split[8].$split[9].$split[10].$split[11].$split[12];  

I know this is wrong. Please help!

Answer 1

Here's a version that will check that the mobile length is 12 and the first 2 characters contain the country code, before trying to remove them. This can be useful in case the input of the number can vary a bit:

$mobile = "919999999999";
if (strlen($mobile) == 12 && substr($mobile, 0, 2) == "91")
    $mobile = substr($mobile, 2, 10);
echo $mobile;