Welcome to the OzoneAsylum FaqWiki
Frequently Asked Questions
Server Side Coding

Regular Expressions. What? Pages that link to <a href="https://ozoneasylum.com/backlink?for=5583" title="Pages that link to Regular Expressions. What?" rel="nofollow" >Regular Expressions. What?\

"Regular expressions are a method of defining string sets" - Tyberius Prime

That means that a regular expression could say 'Ever string starting with an 'B' and ending in a 'N'... or every string Starting with 'Ba', followed by 1 to n 'na'... ie. 'banan', 'ban','bananana'.

For this the commonly used 'perl style regular expressions' (see php manual entry of same name) establish a somewhat cryptic, but powerfull syntax.

Most characters just mean 'this character'. There are a few 'special' characters, that need to be escaped with a backslash () if you want to have them have their 'character meaning'.
Special Characters:
. - any character (but usually not including a newline)
+ - one or more of the preceding pattern
* - zero or more of the preceding pattern
(maybe I should first explain what a 'pattern' is?)

sorry, being continously interrupted... I'll finish it off later. Or maybe someone else will.
--Tyberius Prime

Emperor: We already have a regular expressions FAQ entry and it would seem to make sense to add this kind of thing to a more general FAQ:

Can you help me understand regular expressions?

Tyberius Prime: Sure, move it around, or I'll move it later. seems the earlier faq was not where I looked for it. Oh well. Wait, know I remember! I wanted to write a regular expressions with php quick tutorial... your call where we put the subtopic of this one.

(Edited by: Tyberius Prime on Mon 10-Mar-2003)

« BackwardsOnwards »

Show Forum Drop Down Menu