如何使用PHP格式化数字到塞尔维亚格式？

Question

I have number sent from form like this:

0641234567
064-123/4567
064/123-4567
3816412345678

And it needs to be like this:

[phone]

with +, without 0 and with max 14 characters including '+'.

How can i solve that using regex?

Answer 1

All you need is multiple replacement with basically three rules,

• replace - or / with empty string
• replace the zero in the beginning with +381
• Put a + in the beginning of number if the first number is any 1 to 9

Check this PHP Demo,

$arr = ['0641234567','064-123/4567','064/123-4567','3816412345678'];

foreach($arr as $s) {
    echo $s." --> ".preg_replace(['/^0/', '/^(?=[1-9])/', '/[-\/]/'], ['+381', '+', ''], $s)."
";
}

Prints,

0641234567 --> [phone]
064-123/4567 --> [phone]
064/123-4567 --> [phone]
3816412345678 --> [phone]

Let me know if any of your case goes uncovered.