[RESOLVED] Stripping first two characters of a variable

jme

I have a variable which I need to strip the first two characters off but only if the first two characters are rt. Eg.

Before: rtcdef.php

After: cdef.php

But: abcde.php

Doesn't become: cde.php

I have been looking at writing a function to do this, but is there a simpler way?

Many thanks.
Jamie 🙂

laserlight

You can use [man]preg_replace/man, e.g.,

<?php
$filename = 'rtcdef.php';
echo preg_replace('/^rt/', '', $filename);
?>

joe_C_nice

ltrim("rtcdef.php", "rt");

laserlight

joe_C_nice overlooks the requirements for first 2 characters only. For example "rttcdef.php" would become "cdef.php" instead of "tcdef.php".

jme

@lasrlight preg_replace() was exactly what I was after.
Many thanks.

davsp

Try using substr().

For example substr ( 'abcdef' , 2 ). It would start processing characters at location [2], which is 'c'. it'll disregard 'a' and 'b' ( [0] and [1] respectively ).

This function's in the php manual, so refer to it if you need to understand it more 🙂

davsp

Sigh, I have not been reading your requirements, preg_replace() does the trick fine (as mentioned above)

^{_^.}