[SOLVED] Explode or Regex

[karldesign]

I have a string (phone number) that I wish to add spaces to at set intervals of 4 and 3. Is this achievable and would it be Regex or Explode?

 

If so, how? (ie: 00001234567 becomes 0000 123 4567)

[obsidian]

I believe in a case like this, you'll be fastest in processing to use substr() since you already know the intervals:

<?php
$num = '00001234567';
$new = substr($num, 0, 4) . ' ' . substr($num, 4, 3) . ' ' . substr($num, 7);
echo $new;
?>

[karldesign]

That is what I had, just thought there may have been a better way!

 

Cheers very much.

[Lumio]

I don't know a way with explode, but with Regex and also with substr, it's a good way.

You can do the same with Regex like that:

<?php
   $num = '00001234567';
   preg_match('{([\d]{4})([\d]{3})([\d]{4})}', $num, $match);
   $new = $match[1].' '.$match[2].' '.$match[3];
   echo $new;
?>

[effigy]

TMTOWTDI:

 

<?php
   $num = '00001234567';
   echo preg_replace('/(?<=^\d{4})|(?=\d{4}\z)/', ' ', $num);
?>