Question

In php, how can I perform a replace only in the first 3 characters in a string?

So:

$str = /pr/printers

Replace 'pr' with 'or'. So its -> /or/printers.

What’s happening to me is, the pr in the printer is being replaced as well. So I’m ending up with /or/orinters. How can this be done?

Answer 1

$new = str_replace(‘/pr/’, ‘/or/’, ‘/pr/printers’);

You can also use regular expressions like this:
http://www.laprbass.com/RAY_temp_norman.php

<?php // RAY_temp_norman.php
error_reporting(E_ALL);

$rgx 
= '#'    // REGEX  DELIMITER
. '^'    // START OF STRING
. '/pr'  // PATTERN TO MATCH
. '#'    // REGEX DELIMITER
. 'i'    // OPTIONAL- CASE-INSENSITIVE
;

$str = '/pr/printers';
$rep = '/or';

$new = preg_replace($rgx, $rep, $str);
var_dump($new);