[SOLVED] Correct regex pattern for purpose?

[jordanwb]

A particular value is passed through GET in the particular format: (a-z)-(0-9), Example:

 

nid-7

eid-24

 

Would this pattern work: ^([a-z]\-[0-9])*$

[effigy]

No; without a quantifier a character class matches only one character. Also, there is no need to escape the hyphen or place a quantifier on the grouping. What is the maximum number of letters and digits you're expecting?

[jordanwb]

Really a maximum of 10 letters and there may be a unlimited number of numbers.

[effigy]

This will require one to ten lowercase letters, followed by a hyphen, followed by one or more digits:

 

/\A[a-z]{1,10}-\d+\z/

[jordanwb]

Okay thanks.

[jordanwb]

I tried it and it didn't work

 

if (!eregi ('/\A[a-z]{1,10}-\d+\z/', 'nid-1'))
{
print "Failed";
}

 

it outputed Failed everytime.

 

I could try using explode, split the 'nid' and the number apart, then compare.

[effigy]

You need to use preg_match; it's a PCRE pattern, not an EREG pattern.

[jordanwb]

I was not aware there was a difference. Now I do. It works, Thanks.