[RESOLVED] REGEX question

Tizza

Hi All

small regex question here... i have a bunch of variables that has different values. -- what i am looking for is a method to seperate all variables that are 5 digit numbers.

so in the end i want the following :

If $id contains a 5 digit number
do the following
else do this

would i use preg_match statement? or is there an easier method?

thanks!

stevesweetland

you can do that.

this regular expression should work

if (preg_match("/^[0-9]{5}\$/",$yourstring){
  print "5 digits";
} else {
  print "not 5 digits";
};

read up on regular expressions... and learn them, honestly, one of those dead helpful things that youll love.

http://www.phpbuilder.com/columns/index.php3?cat=2&subcat=23

stevesweetland

if that answers your question... mark the thread as resolved.

thread tools > resolved.

Tizza

perfect!!! thank you very muhc!

I have tried reading a number of documents on Regex statements, but sometimes i start to confuse myself.

Is there an application where you can enter in your variable and then write the regex statement to extract what you are looking for?

THanks!!!

Installer

Regex Coach

...is there an easier method?

Instead of wrestling with regular expressions for such simple tasks you could do something like:

if (ctype_digit($val) && (strlen($val) == 5)) {
    print '5 digits'; 
} else { 
    print 'not 5 digits'; 
}

stevesweetland

Tizza wrote:
perfect!!! thank you very muhc!

I have tried reading a number of documents on Regex statements, but sometimes i start to confuse myself.

Is there an application where you can enter in your variable and then write the regex statement to extract what you are looking for?

THanks!!!

like installer says, theres an easier way to do such an easy thing...

as far an application writing a regular expression for you? nope.

its one of these where you need to understand how it works, and then how to construct your own string. treat it like a whole new programming language...