preg_match with specified lenth question

[fubowl]

Hi, I'm using preg_match to validate various fields. I wish to check that a string the length of four numbers, as a year, eg. 2010. How would I do this, something like:

 /^[0-9'\s]{4}*$/i

?

 

As usual, I have no idea.

[salathe]

So you want to check that the string is a number between 1000 and 9999?  Do you need to use a regex?

[fubowl]

No but I've set it up to use it as default validation. I mainly just want to check only for numerals and it being 4 digits long.

[salathe]

So 0002 is OK? (These Qs might seem silly, but are important)

[fortnox007]

I think you can strip some stuff from your regex

/^[0-9]{4}$/

i is not needed, numbers are not case sensitive.

the * is not needed (maybe even confusing)

more cases can be found by preg_match_all

 

this regex doesn't allow any other characters than 0-9 but i assume you want that.

Does this help you?

 

IF you want a certain range like starting from 1900 let me know

[Pikachu2000]

You should only use regex when it's actually needed.