Position of String Occurence

[Tesla]

Hey guys, I have a string like "lalala: djkahsd : dajkdassd : adasd :"

Is there a function to find the position of the "I"th occurence of a
character/string? Like lets say I want to find out the position of the
second colon. How do I go about that?? I can only find functions that
return the position of the first or last occurence, but not a variable
occurence ::sniffles::

[Pedro Graca]

Re: Position of String Occurence

Tesla wrote:[color=blue]
> Hey guys, I have a string like "lalala: djkahsd : dajkdassd : adasd :"
>
> Is there a function to find the position of the "I"th occurence of a
> character/string? Like lets say I want to find out the position of the
> second colon. How do I go about that?? I can only find functions that
> return the position of the first or last occurence, but not a variable
> occurence ::sniffles::[/color]

Well, you could explode the string at the colons and get

$arr[0] = 'lalala';
$arr[1] = ' djkahsd ';
$arr[2] = ' dajkdassd';
$arr[3] = ' adasd ';
$arr[4] = '';

<?php
$string = "lalala: djkahsd : dajkdassd : adasd :";
$arr = explode(':', $string);
?>

But, if you really want the position of the nth ocurrence of needle in
haystack, I guess your best bet is to make a function that returns that
(or false if not enough needles are in haystack)

or use the array above and get the position as a sum of strlen()s, but I
prefer a specific function :)


Happy Coding :)
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[Phillip Parr]

Re: Position of String Occurence

Hmm, how about exploding the string by colons then calculating the length of
the first element to work out the beginning of the second? I'm no expert but
that's what I came up with...


"Tesla" <tpha@houston.r r.com> wrote in message
news:TkcZb.1053 3$jl.9201@fe2.t exas.rr.com...[color=blue]
> Hey guys, I have a string like "lalala: djkahsd : dajkdassd : adasd :"
>
> Is there a function to find the position of the "I"th occurence of a
> character/string? Like lets say I want to find out the position of the
> second colon. How do I go about that?? I can only find functions that
> return the position of the first or last occurence, but not a variable
> occurence ::sniffles::
>
>[/color]