regular expression help

[stuartc1]

Hi All,

I need a little help with string matching. here is what I need to do:

I have variable ($call) which value may start with 'c3' and has a dynamic part appended to it (i.e. 'c3something').
I need to say:
if $call (starts with and only has one occurance of 'c3'). ??

The next thing I need to do is split the dynamic part from the string and store that in an new variable.

here is what I have already (not working correctly though)

if (ereg("(c3)", $CallName))
{
list ($c, $pg) = split ('(c3){1}', $call);
}

$pg should now hold the part that comes after 'c3'. But if you set $call to ci3jfjc3 it will fail !!

All help much appriciated.

[stuartc1]

It's OK, I think I have solved it, I used:

if (ereg("(c3)+", $call)) {
$pg = substr($call, 2, 20);

seems to work fine.

[Anon]

try this:
$start=substr($CallName,1);
if ($start=="c3"){
$end=strrchr($CallName,$start)
echo $end;
}else{
echo "no match";
}

[techek]

I'd make the regex look like this :

"^c3(.+)$"

.. which then matches the beginning, then c3 and then 1 or more chars until the end. In the returned matched elements you'll find the part matched by (.+) in element 1

Remember that (c3)+ would match "abc3c4c5" too, which seems you don't want it to?

Hope this will help a bit more.