find last part of string

Hi,

What would be the best syntax to find the last piece of string indicated by
an underscore in a string ?
The string can have multiple underscores however, only the last one is
valid.

E.g.

$mystring = "abcd_123456_QWER_98765" ;

$laststring should result in : "98765"

and how do I get the amount of characters from $laststring ?

Peter wrote:
> Hi,
>
> What would be the best syntax to find the last piece of string indicated by
> an underscore in a string ?
> The string can have multiple underscores however, only the last one is
> valid.
>
> E.g.
>
> $mystring = "abcd_123456_QWER_98765" ;
>
> $laststring should result in : "98765"
>
> and how do I get the amount of characters from $laststring ?

I'm sure a bunch of people will try to use a regular expression to do
this, but you don't really need one:

$mystring = "abcd_123456_QWER_98765" ;
$laststring = substr($mystring, strrpos($mystring, '_'));
$numChars = strlen($laststring);

Hey thanks,
that was fast :)

>
> $mystring = "abcd_123456_QWER_98765" ;
> $laststring = substr($mystring, strrpos($mystring, '_'));
> $numChars = strlen($laststring);
>
>

Doing some testing.
A small bug it seems, line 2 should be:

$laststring = substr($mystring, strrpos($mystring, '_') + 1);

>
> $mystring = "abcd_123456_QWER_98765" ;
> $laststring = substr($mystring, strrpos($mystring, '_'));
> $numChars = strlen($laststring);
>
>

Peter wrote:
> Doing some testing.
> A small bug it seems, line 2 should be:
>
> $laststring = substr($mystring, strrpos($mystring, '_') + 1);
>
> >
> > $mystring = "abcd_123456_QWER_98765" ;
> > $laststring = substr($mystring, strrpos($mystring, '_'));
> > $numChars = strlen($laststring);
> >
> >

If I just gave you the code and it worked perfectly, you'd have no
reason to look at it and try to understand how it works :)

On 6 Dec 2006 09:51:47 -0800, "ZeldorBlat" <zeldorblat@gmail.com>
wrote:

>
>Peter wrote:
>> Doing some testing.
>> A small bug it seems, line 2 should be:
>>
>> $laststring = substr($mystring, strrpos($mystring, '_') + 1);
>>
>> >
>> > $mystring = "abcd_123456_QWER_98765" ;
>> > $laststring = substr($mystring, strrpos($mystring, '_'));
>> > $numChars = strlen($laststring);
>> >
>> >
>
>If I just gave you the code and it worked perfectly, you'd have no
>reason to look at it and try to understand how it works :)

That's just plain silly. If he examines it and understands how it
works, he may be able to progress.