Re: strpos() suggestion

The reason the functions are the way they are is because they directly mirror the underlying C functions. strrpos() calls strrchr() directly. But yes, some sort of new php_memnstr() based string searcher could probably be written. -Rasmus On 13 Nov 2002, Monte Ohrt wrote: > Hi, > > I had a little problem to solve today, and couldn't find any easy way to > do it without some extra steps slicing things up. > > What I wanted to do is take an arbitrary point in a string, and find the > position of the first '[' on the left of it, and the first ']' on the > right of it. > > Finding the ']' was easy, I use strpos() to find the first occurance of > ']' after my given point. > > Finding '[' however is not so easy. strrpos() was my first guess, but it > does not work like strpos() at all. There is no optional third > parameter, and on an unrelated note it only works with a single > character, not a string. inconsistant ;-) My best solution was to slice > the string at my point, then get the position of '[' with strrpos(). > > I'm not sure of the most intuitive way to solve this. One way would be > to add a feature to strpos(); if you supply a negative third parameter, > it gives you the position of the first occurance to the _left_ of that > point. I'm not sure if the number should represent the position from the > end or beginning of the string. Another way, add a third parameter to > strrpos() to start at a given point from the end of the string. > > I'd try submitting a patch, but I'm not sure of which way would be best, > and my C is a bit rusty, I'd probably do more damage than help ;-) > > Thoughts? > Monte > > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, visit: http://www.php.net/unsub.php >