Regular Expressions

[elitecodex]

I have a question. I thought that I understood regular expressions, but I guess I dont. Could anyone lend a helping hand?

I have this:

Code: Select all

preg_match("/([0-9]{2})([a-zA-Z])([0-9]{1,4})/i", $_POST["job_number"], $mat);
var_dump($mat);


and the input ($_POST["job_number"]) would be 02PR500 and I want to split that up. By "02" then "PR" then "500". Of course 02 and 500 could be any value between 1 and 9000. What am I doing wrong? Any help is greatly appreciated.

Will

[vvlad]

hi
you write correct regexp, only one mistake
there are several letters and try to match only one
here is correct regexp
"^([0-9]{2})([a-zA-Z]+)([0-9]{1,4})$/i"

[elitecodex]

hello

I thank you for your response. I know have some questions though. If memory serves me right, then "^" and "$" match the beginning and end of a string, respectively. What does the "+" do?

Do you know where I could find some good docs on regular expressions? Im kinda new to them and want to start to really learn the fun stuff

Also, what the difference between perl regular expressions and regular expressions? I ask b/c I noticed that they both are supported in PHP and was wondering if they have a syntax difference or what.

Thanks for your response

Will