Hello
I need a regular expression that validate a list of numbers separated
by "-" , numbers can not be greater than 999
Valid examples
0
12-455-01
1-9
125-32-155-45-45
Invalid examples
-1
45-
1-45665456-4
12-45-
-
Thanks ;)
Oct 17 '07
18  1740 
On Thu, 18 Oct 2007 10:42:20 +0200, <da*******@gmai l.comwrote:
Same but numbers can't be lesser than the previous number, must be
equal or greater, is this possible with regex??
0-45-90-120 -Valid
0-45-45-90 -Valid
0-90-45-120 -Invalid
Maybe it's possible. I wouldn't do it with a regex anymore though.
function _my_validate($s tring){
$array = explode('-',$string);
if(!is_array($a rray)) return false;
$previous = 0;
foreach($array as $value){
if(
intval($value)! = $value
||
$value < $previous
||
$value 999
) return false;
$previous = $value;
}
return true;
}
--
Rik Wasmus
On 18 oct, 13:44, "Rik Wasmus" <luiheidsgoe... @hotmail.comwro te:
On Thu, 18 Oct 2007 10:42:20 +0200, <davran...@gmai l.comwrote:
Same but numbers can't be lesser than the previous number, must be
equal or greater, is this possible with regex??
0-45-90-120 -Valid
0-45-45-90 -Valid
0-90-45-120 -Invalid
Maybe it's possible. I wouldn't do it with a regex anymore though.
function _my_validate($s tring){
$array = explode('-',$string);
if(!is_array($a rray)) return false;
$previous = 0;
foreach($array as $value){
if(
intval($value)! = $value
||
$value < $previous
||
$value 999
) return false;
$previous = $value;
}
return true;
}
--
Rik Wasmus
ok , thanks again
<da*******@gmai l.comwrote in message
news:11******** *************@v 23g2000prn.goog legroups.com...
you had two responses...one of
which (not mine, btw), is much more simply expressed than rik's
Steve , not much more simply expressed
"1-9" and "\d" are identical ;)
uhmmmm...
/^\d{1,3}(?:-\d{1,3})*$/
is much more simply understood than
/^([1-9][0-9]?)?[0-9](-([1-9][0-9]?)?[0-9])*$/
smart ass.
"Captain Paralytic" <pa**********@y ahoo.comwrote in message
news:11******** **************@ e34g2000pro.goo glegroups.com.. .
On 18 Oct, 04:40, "Steve" <no....@example .comwrote:
>second, dave...if you're going to cross post the same question, at least
have the courtesy to go back and say, 'i found an answer, thanks for your
time.' shortly after your posting to alt.php, you had two responses...one
of
which (not mine, btw), is much more simply expressed than rik's. either
way,
be courteous to both of the groups you posted to...that way, we'll keep
responding to your questions rather than thinking that someone somewhere
else is responding.
Actually Steve, if he had "cross-posted" ti wouldn't have been a
problem as both groups would have seen the responses.
So Dave, in future if you want to ask in 2 groups, do cross-post.
What you did in this case was multi-post.
yeah, yeah...lol
multi-post...i know. for christ's sake, i responded at 4.40 am...whatcha
expect. ;^)
On Thu, 18 Oct 2007 15:15:11 +0200, Steve <no****@example .comwrote:
>
<da*******@gmai l.comwrote in message
news:11******** *************@v 23g2000prn.goog legroups.com...
>you had two responses...one of
which (not mine, btw), is much more simply expressed than rik's
Steve , not much more simply expressed
"1-9" and "\d" are identical ;)
uhmmmm...
/^\d{1,3}(?:-\d{1,3})*$/
is much more simply understood than
/^([1-9][0-9]?)?[0-9](-([1-9][0-9]?)?[0-9])*$/
smart ass.
Because the first hasn't got the 'starting with 0 is prohibited unless
it's only one number'-clause.
The answer without that requirement is nearly identical, and I might say
perfectly readable:
'/^ # match start of string
[0-9]{1,3} # match 1 to 3 digits
( # start subpattern
- # literal -
[0-9]{1,3} # match 1 to 3 digits
)* # match subpattern zero or more times
$ # match has to run all the way up untill the end of the string
/x'
(which in one line would result in: '/^[0-9]{1,3}(-[0-9]{1,3})*$/')
Then again I have always had an unexpainable aversion against \d, don't
know why, I just always use [0-9].
--
Rik Wasmus
Greetings, da*******@gmail .com.
In reply to Your message dated Wednesday, October 17, 2007, 23:59:49,
dgcI need a regular expression that validate a list of numbers separated
dgcby "-" , numbers can not be greater than 999
dgcValid examples
dgc0
dgc12-455-01
dgc1-9
dgc125-32-155-45-45
dgcInvalid examples
dgc-1
dgc45-
dgc1-45665456-4
dgc12-45-
dgc-
dgcThanks ;)
Perl one:
^\d{1,3}(\-\d{1,3})*$
--
Sincerely Yours, AnrDaemon <an*******@free mail.ru>
"AnrDaemon" <an*******@free mail.ruwrote in message
news:72******** **************@ freemail.ru...
Greetings, da*******@gmail .com.
In reply to Your message dated Wednesday, October 17, 2007, 23:59:49,
dgcI need a regular expression that validate a list of numbers separated
dgcby "-" , numbers can not be greater than 999
dgcValid examples
dgc0
dgc12-455-01
dgc1-9
dgc125-32-155-45-45
dgcInvalid examples
dgc-1
dgc45-
dgc1-45665456-4
dgc12-45-
dgc-
dgcThanks ;)
Perl one:
^\d{1,3}(\-\d{1,3})*$
wow...thanks for that! it wasn't like that was posted in two newsgroups 4
days ago or anything...in the exact form of:
/^\d{1,3}(?:-\d{1,3})*$/
i suppose i should just wait till someone else answers a post and a couple
of days later, post the exact freaking thing. the redundancy, i think, would
just ensure that the op reeeeealy gets it.
lol.
Greetings, Steve.
In reply to Your message dated Friday, October 19, 2007, 23:10:56,
>dgcI need a regular expression that validate a list of numbers separated
dgcby "-" , numbers can not be greater than 999
dgcValid examples
dgc0
dgc12-455-01
dgc1-9
dgc125-32-155-45-45
dgcInvalid examples
dgc-1
dgc45-
dgc1-45665456-4
dgc12-45-
dgc-
dgcThanks ;)
Perl one:
^\d{1,3}(\-\d{1,3})*$
Swow...thanks for that! it wasn't like that was posted in two newsgroups 4
Sdays ago or anything...in the exact form of:
S/^\d{1,3}(?:-\d{1,3})*$/
Only difference is post-processing of result produced by this RE.
In my form You'll get set of subpatterns, in the form You referred above
You'll get only fullstring match and no subpatterns.
"(?: ... )" construction means grouping without storing, useful for in-line
multiplication of patterns.
Si suppose i should just wait till someone else answers a post and a couple
Sof days later, post the exact freaking thing. the redundancy, i think, would
Sjust ensure that the op reeeeealy gets it.
:) It was taking me longer than 2 months trying to figure out, how RE works
exactly and can it be used in real life. But after that, I can't live without
it.
--
Sincerely Yours, AnrDaemon <an*******@free mail.ru>
"AnrDaemon" <an*******@free mail.ruwrote in message
news:13******** **************@ freemail.ru...
Greetings, Steve.
In reply to Your message dated Friday, October 19, 2007, 23:10:56,
>>dgcI need a regular expression that validate a list of numbers
separated
dgcby "-" , numbers can not be greater than 999
dgcValid examples
dgc0
dgc12-455-01
dgc1-9
dgc125-32-155-45-45
dgcInvalid examples
dgc-1
dgc45-
dgc1-45665456-4
dgc12-45-
dgc-
dgcThanks ;)
Perl one:
^\d{1,3}(\-\d{1,3})*$
Swow...thanks for that! it wasn't like that was posted in two newsgroups
4
Sdays ago or anything...in the exact form of:
S/^\d{1,3}(?:-\d{1,3})*$/
Only difference is post-processing of result produced by this RE.
In my form You'll get set of subpatterns, in the form You referred above
You'll get only fullstring match and no subpatterns.
"(?: ... )" construction means grouping without storing, useful for
in-line
multiplication of patterns.
really? i had *no* idea! you mean, you can do that sort of thing? lol.
btw, that would be a great thing to tell the op...not me. further, you
should attempt to demonstrate that you actually know what ?: does. what you
have explained is COMPLETELY false! *grouping* does NOT mean *capturing*.
BOTH patterns GROUP. i've no idea on earth what 'multiplication of patterns'
means in regex...since multiplication is not part of any regex engine of
which i know.
to be clear to the op, ?: means that whatever is inbetween the parenthesis
will not be stored as matched output. and, since there is overhead in
capturing and given that the op ONLY wants to validate, it seems feckless to
quibble about the difference here as if yours provides a better solution. it
is the SAME regex pattern...only, yours will run slower.
Si suppose i should just wait till someone else answers a post and a
couple
Sof days later, post the exact freaking thing. the redundancy, i think,
would
Sjust ensure that the op reeeeealy gets it.
:) It was taking me longer than 2 months trying to figure out, how RE
works
exactly and can it be used in real life. But after that, I can't live
without
it.
and this means what, exactly? that you think posting identical solutions to
a problem advances the learning of the op? that's just silly. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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