how to set a character betwen other characters in php

Question

how to convert string sample 1 to sample 2 in PHP:

this string : 0510

after : 05:10

thanks

Answer 1

Without giving more info, there are hundreds of ways to convert '0510' to '05:10'. You can use .substr():

$string = '0510';
$string = substr($string, 0, 2).':'.substr($string, -2);

Or brackets:

$string = $string[0].$string[1].':'.$string[2].$string[3];

Or .str_split() with .implode():

$string = implode(':', str_split($string, 2));

Or .preg_replace():

$string = preg_replace(`~(\d{2})(\d{2})~`, '$1:$2', $string);