Hi all,
I somehow just couldn't get my regular expression syntax correct. Will you please help me?
some examples of my valid string is:
sinx0401-001-45
hkgx0403-020-12
jktx0402-000-01
bkkx0407-013-44
the definition is:
1st 4 characters - can only be "sinx" or "hkgx" or "bkkx" or "jktx"
next 4 characters - numbers 0 to 9
next 1 character - a dash "-"
next 3 characters - numbers 0 to 9
next 1 character - a dash "-"
last 2 characters - numbers 0 to 9
my problem is how can i make sure the first 4 characters are either "sinx" or "hkgx" or "bkkx" or "jktx"?
I've tried:
eregi("[(sinx)|(hkgx)|(bkkx)|(jktx)][0-9]{4}\-[0-9]{3}\-[0-9]{2}$", $string)
but this condition returns a TRUE if the 4th character in the string is "x"!
that means, if my $string = "xxxx0408-001-54", this condition returns me with TRUE!
i also tried the following but they didn't give me the correct results:
eregi("^[(sinx)|(hkgx)|(bkkx)|(jktx)]{4}[0-9]{4}\-[0-9]{3}\-[0-9]{2}$", $string)
eregi("[(sinx)|(hkgx)|(bkkx)|(jktx)]{4}[0-9]{4}\-[0-9]{3}\-[0-9]{2}$", $string)
eregi("(sinx)|(hkgx)|(bkkx)|(jktx)[0-9]{4}\-[0-9]{3}\-[0-9]{2}$", $string)
eregi("^(sinx)|(hkgx)|(bkkx)|(jktx)[0-9]{4}\-[0-9]{3}\-[0-9]{2}$", $string)
does anyone have any suggestions?
Thank you!
Hwee
