regex question.

just learning regex is it posible ?

say i have a string " this is a really funny string"

and want to leave the middle untouched but replace the outer parts

EG ens up with "that was a really funny rope"

so for example find a string with "this is" on the begining and replace it
with "that was"
and with "string" on the end and replace it with "rope"
BUT whatever is inbeteween remains untouched

is this possible ??

chris

re: regex question.

It's very possible :)

You can use things called "anchors" to specify that your pattern has to
match either the beginning or the end of a string. The character ^ means
start, and $ means end.

preg_replace("/^this is/", "that was", $string);

says "replace 'this is' at start of $string with 'that was'" :)

d.

"chris" <someone@here.com> wrote in message
news:41bd670d$1@funnel.arach.net.au...[color=blue]
> just learning regex is it posible ?
>
> say i have a string " this is a really funny string"
>
> and want to leave the middle untouched but replace the outer parts
>
> EG ens up with "that was a really funny rope"
>
> so for example find a string with "this is" on the begining and replace it
> with "that was"
> and with "string" on the end and replace it with "rope"
> BUT whatever is inbeteween remains untouched
>
> is this possible ??
>
> chris
>[/color]

re: regex question.

["Followup-To:" header set to comp.lang.php.]
chris wrote:[color=blue]
> just learning regex is it posible ?[/color]

Try the "regex-coach"
http://www.weitz.de/regex-coach/

Example (picture will be deleted in 30 days)
http://www.pixpond.com/xx/regex.png

--
Mail to my "From:" address is readable by all at http://www.dodgeit.com/
== ** ## !! ------------------------------------------------ !! ## ** ==
TEXT-ONLY mail to the whole "Reply-To:" address ("My Name" <my@address>)
may bypass my spam filter. If it does, I may reply from another address!

re: regex question.

explode(" ",$string); would copy all the words into an indexed array

chris wrote:[color=blue]
> just learning regex is it posible ?
>
> say i have a string " this is a really funny string"
>
> and want to leave the middle untouched but replace the outer parts
>
> EG ens up with "that was a really funny rope"
>
> so for example find a string with "this is" on the begining and replace it
> with "that was"
> and with "string" on the end and replace it with "rope"
> BUT whatever is inbeteween remains untouched
>
> is this possible ??
>
> chris
>
>[/color]