Re: [PHP] preg_match help please
Steve Turnbull wrote:
I am trying to find a regular expression to match a variable, what I think
should work (but doesn't) is;
preg_match ('^/[\w],[\w],/', $variable)
The $variable MUST contain an alpha-numeric string, followed by a comma,
followed by another alpha-numeric string, followed by another comma
followed by (but doesn't have to!!) another alpha-numeric string followed
by nothing.
I realise my regex above doesn't allow for the last 'followed by nothing',
but to me it looks like it should match the first part of the string up to
the last comma?
Something like
'/^\w+,\w+,\w*$/'
maybe? (untested)
http://php.net/reference.pcre.pattern.syntax
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Re: [PHP] preg_match help please
On Thu, 08 Sep 2005 19:27:49 +1200, Jasper Bryant-Greene wrote:
Steve Turnbull wrote:
I am trying to find a regular expression to match a variable, what I think
should work (but doesn't) is;
preg_match ('^/[\w],[\w],/', $variable)
The $variable MUST contain an alpha-numeric string, followed by a comma,
followed by another alpha-numeric string, followed by another comma
followed by (but doesn't have to!!) another alpha-numeric string followed
by nothing.
I realise my regex above doesn't allow for the last 'followed by nothing',
but to me it looks like it should match the first part of the string up to
the last comma?
Something like
'/^\w+,\w+,\w*$/'
maybe? (untested)
http://php.net/reference.pcre.pattern.syntax
Thats got me a lot further - thanks
I reduced it slightly to '/^\w+,\w+,' because at the end there is the
possibility of an alpha-numeric character(s) OR nothing at all with the
exception of a possible line break (note possible)
It's the 'possibly nothing at all' which I am slightly stuck on
Thanks
Steve
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Re: [PHP] preg_match help please
Steve Turnbull wrote: On Thu, 08 Sep 2005 19:27:49 +1200, Jasper Bryant-Greene wrote: Something like '/^\w+,\w+,\w*$/' maybe? (untested) http://php.net/reference.pcre.pattern.syntax Thats got me a lot further - thanks I reduced it slightly to '/^\w+,\w+,' because at the end there is the possibility of an alpha-numeric character(s) OR nothing at all with the exception of a possible line break (note possible) It's the 'possibly nothing at all' which I am slightly stuck on That's what the \w* means. That means 0 or more word-characters, as opposed to \w+ which means 1 or more word-characters. The $ after that means end of string which makes sure that it's the last thing in the string. In other words, \w* means some word-characters, or nothing at all. You'd need to handle the newline in much the same way. The URL I gave you should help out a lot with that. -- Jasper Bryant-Greene Freelance web developer http://jasper.bryant-greene.name/ If you find my advice useful, please consider donating to a poor student! You can choose whatever amount you think my advice was worth to you. http://tinyurl.com/7oa5s -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] preg_match help please
On 08 September 2005 09:15, Steve Turnbull wrote:
On Thu, 08 Sep 2005 19:27:49 +1200, Jasper Bryant-Greene wrote:
Steve Turnbull wrote:
I am trying to find a regular expression to match a variable,
what I think should work (but doesn't) is;
preg_match ('^/[\w],[\w],/', $variable)
The $variable MUST contain an alpha-numeric string, followed by a
comma, followed by another alpha-numeric string, followed by
another comma followed by (but doesn't have to!!) another
alpha-numeric string followed by nothing.
I realise my regex above doesn't allow for the last 'followed by
nothing', but to me it looks like it should match the first part
of the string up to the last comma?
Something like
'/^\w+,\w+,\w*$/'
maybe? (untested)
http://php.net/reference.pcre.pattern.syntax
Thats got me a lot further - thanks
I reduced it slightly to '/^\w+,\w+,' because at the end there is the
possibility of an alpha-numeric character(s) OR nothing at
all with the
exception of a possible line break (note possible)
It's the 'possibly nothing at all' which I am slightly stuck on
The * takes care of that -- it means 0 or more of the preceding entity.
Cheers!
Mike
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Re: [PHP] preg_match help please
On Thu, 08 Sep 2005 09:15:03 +0100, Steve Turnbull wrote:
On Thu, 08 Sep 2005 19:27:49 +1200, Jasper Bryant-Greene wrote:
Steve Turnbull wrote:
I am trying to find a regular expression to match a variable, what I think
should work (but doesn't) is;
preg_match ('^/[\w],[\w],/', $variable)
The $variable MUST contain an alpha-numeric string, followed by a comma,
followed by another alpha-numeric string, followed by another comma
followed by (but doesn't have to!!) another alpha-numeric string followed
by nothing.
I realise my regex above doesn't allow for the last 'followed by nothing',
but to me it looks like it should match the first part of the string up to
the last comma?
Something like
'/^\w+,\w+,\w*$/'
maybe? (untested)
http://php.net/reference.pcre.pattern.syntax
Thats got me a lot further - thanks
I reduced it slightly to '/^\w+,\w+,' because at the end there is the
possibility of an alpha-numeric character(s) OR nothing at all with the
exception of a possible line break (note possible)
It's the 'possibly nothing at all' which I am slightly stuck on
Thanks
Steve
One more thing (I have tried researching myself and reading the o'rielly
book, but I need fairly swift solutions)...
How would I check for this scenario;
Two commas, which MAY have, but don't always have a value between, but
the commas must ALWAYS be there - i.e.
var1,var2,var3
var1,var2,
var1,,
Cheers
Steve
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Re: [PHP] preg_match help please
On Thu, 08 Sep 2005 16:36:36 +0100, Steve Turnbull wrote:
On Thu, 08 Sep 2005 09:15:03 +0100, Steve Turnbull wrote:
On Thu, 08 Sep 2005 19:27:49 +1200, Jasper Bryant-Greene wrote:
Steve Turnbull wrote:
I am trying to find a regular expression to match a variable, what I think
should work (but doesn't) is;
preg_match ('^/[\w],[\w],/', $variable)
The $variable MUST contain an alpha-numeric string, followed by a comma,
followed by another alpha-numeric string, followed by another comma
followed by (but doesn't have to!!) another alpha-numeric string followed
by nothing.
I realise my regex above doesn't allow for the last 'followed by nothing',
but to me it looks like it should match the first part of the string up to
the last comma?
Something like
'/^\w+,\w+,\w*$/'
maybe? (untested)
http://php.net/reference.pcre.pattern.syntax
Thats got me a lot further - thanks
I reduced it slightly to '/^\w+,\w+,' because at the end there is the
possibility of an alpha-numeric character(s) OR nothing at all with the
exception of a possible line break (note possible)
It's the 'possibly nothing at all' which I am slightly stuck on
Thanks
Steve
One more thing (I have tried researching myself and reading the o'rielly
book, but I need fairly swift solutions)...
How would I check for this scenario;
Two commas, which MAY have, but don't always have a value between, but
the commas must ALWAYS be there - i.e.
var1,var2,var3
var1,var2,
var1,,
No matter now - sorted. I hadn't read the final reply before I posted this
one
Thanks again
Steve
Cheers
Steve
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Re: [PHP] preg_match - help please
On Thursday 28 July 2005 01:50, André Medeiros wrote: You can have four words to describe a first and last name... you can have other alphabets, like arabian, chinese, etc... inserting accented characters alone would make that a big, nasty regex, let alone predicting ways you can describe first/last names. I'm not saying that I have the _BEST_ sollution. All I'm saying is that there are sittuations that are out of your control, and it seems to me this might be the easiest way out, guaranteeing that there are at least two words. Most Chinese would enter their name (usually 3 words, sometimes 2. rarely 4) WITHOUT any spaces. Not sure what the OP was trying to do, but the best way to handle it (IMHO) is to give the user 2 input boxes, one for family name, the other for the rest of their name. -- Jason Wong - Gremlins Associates - www.gremlins.biz Open Source Software Systems Integrators * Web Design Hosting * Internet Intranet Applications Development * -- Search the list archives before you post http://marc.theaimsgroup.com/?l=php-general -- New Year Resolution: Ignore top posted posts -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] preg_match - help please
On Thu, 2005-07-28 at 19:45 +0800, Jason Wong wrote: On Thursday 28 July 2005 01:50, André Medeiros wrote: You can have four words to describe a first and last name... you can have other alphabets, like arabian, chinese, etc... inserting accented characters alone would make that a big, nasty regex, let alone predicting ways you can describe first/last names. I'm not saying that I have the _BEST_ sollution. All I'm saying is that there are sittuations that are out of your control, and it seems to me this might be the easiest way out, guaranteeing that there are at least two words. Most Chinese would enter their name (usually 3 words, sometimes 2. rarely 4) WITHOUT any spaces. Not sure what the OP was trying to do, but the best way to handle it (IMHO) is to give the user 2 input boxes, one for family name, the other for the rest of their name. -- Jason Wong - Gremlins Associates - www.gremlins.biz Open Source Software Systems Integrators * Web Design Hosting * Internet Intranet Applications Development * -- Search the list archives before you post http://marc.theaimsgroup.com/?l=php-general -- New Year Resolution: Ignore top posted posts Heh... that's the best answer i've seen so far =) That and the regexp's idea given by John (ie. forbid chars instead of entering every letter of every alphabet) would work great. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] preg_match - help please
Steve Turnbull wrote:
Hi
I want to see that a user is submiting a form field in the correct manner.
So I decided to use preg_match to verify their input.
The pattern I am trying to match is;
Firstname Secondname
I am not bothered about character length just yet (but advise on this would
be appreciated if it can be done with a regular expression - saves extra
checking code), but I would like case sensitity.
The code I haev so far, which doesn't seem to work is;
$un = $_REQUEST['name'];
$exp = '/^\b[a-zA-Z] [a-zA-Z]$/';
if (preg_match($exp, $un)) {
//has this matched?
echo h2matched/h2;
}
Help would be greatly appreciated
/^[a-zA-Z]{1,}\s[a-zA-Z]{1,}$/
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Re: [PHP] preg_match - help please
On Wed, 2005-07-27 at 15:27 +0100, Steve Turnbull wrote:
Hi
I want to see that a user is submiting a form field in the correct manner.
So I decided to use preg_match to verify their input.
The pattern I am trying to match is;
Firstname Secondname
I am not bothered about character length just yet (but advise on this would
be appreciated if it can be done with a regular expression - saves extra
checking code), but I would like case sensitity.
The code I haev so far, which doesn't seem to work is;
$un = $_REQUEST['name'];
$exp = '/^\b[a-zA-Z] [a-zA-Z]$/';
if (preg_match($exp, $un)) {
//has this matched?
echo h2matched/h2;
}
Help would be greatly appreciated
Thanks
Steve
http://pt.php.net/strpos
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Re: [PHP] preg_match - help please
On Wed, 2005-07-27 at 15:27 +0100, Steve Turnbull wrote:
Hi
I want to see that a user is submiting a form field in the correct manner.
So I decided to use preg_match to verify their input.
The pattern I am trying to match is;
Firstname Secondname
I am not bothered about character length just yet (but advise on this would
be appreciated if it can be done with a regular expression - saves extra
checking code), but I would like case sensitity.
The code I haev so far, which doesn't seem to work is;
$un = $_REQUEST['name'];
$exp = '/^\b[a-zA-Z] [a-zA-Z]$/';
if (preg_match($exp, $un)) {
//has this matched?
echo h2matched/h2;
}
Help would be greatly appreciated
Thanks
Steve
A reminder... sometimes First and Last name can contain three words.
There are portuguese names, like Inês de Medeiros. Watch out for that
too.
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Re: [PHP] preg_match - help please
André Medeiros [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
On Wed, 2005-07-27 at 15:27 +0100, Steve Turnbull wrote:
Hi
I want to see that a user is submiting a form field in the correct
manner.
So I decided to use preg_match to verify their input.
The pattern I am trying to match is;
Firstname Secondname
I am not bothered about character length just yet (but advise on this
would
be appreciated if it can be done with a regular expression - saves extra
checking code), but I would like case sensitity.
The code I haev so far, which doesn't seem to work is;
$un = $_REQUEST['name'];
$exp = '/^\b[a-zA-Z] [a-zA-Z]$/';
if (preg_match($exp, $un)) {
//has this matched?
echo h2matched/h2;
}
Help would be greatly appreciated
Thanks
Steve
A reminder... sometimes First and Last name can contain three words.
There are portuguese names, like Inês de Medeiros. Watch out for that
too.
Or even four - like Rafael van der Vaart for example - so make sure that the
surname box matches spaces as well, and special characters like the ê, as
well as ' as in John O'Kane
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Re: [PHP] preg_match - help please
On Wed, 2005-07-27 at 16:16 +0100, Mark Rees wrote:
André Medeiros [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
On Wed, 2005-07-27 at 15:27 +0100, Steve Turnbull wrote:
Hi
I want to see that a user is submiting a form field in the correct
manner.
So I decided to use preg_match to verify their input.
The pattern I am trying to match is;
Firstname Secondname
I am not bothered about character length just yet (but advise on this
would
be appreciated if it can be done with a regular expression - saves extra
checking code), but I would like case sensitity.
The code I haev so far, which doesn't seem to work is;
$un = $_REQUEST['name'];
$exp = '/^\b[a-zA-Z] [a-zA-Z]$/';
if (preg_match($exp, $un)) {
//has this matched?
echo h2matched/h2;
}
Help would be greatly appreciated
Thanks
Steve
A reminder... sometimes First and Last name can contain three words.
There are portuguese names, like Inês de Medeiros. Watch out for that
too.
Or even four - like Rafael van der Vaart for example - so make sure that the
surname box matches spaces as well, and special characters like the ê, as
well as ' as in John O'Kane
Yeah, that's why strpos will make his life much easier :)
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RE: [PHP] preg_match - help please
From: André Medeiros [mailto:[EMAIL PROTECTED] On Wed, 2005-07-27 at 16:16 +0100, Mark Rees wrote: Or even four - like Rafael van der Vaart for example - so make sure that the surname box matches spaces as well, and special characters like the ê, as well as ' as in John O'Kane Yeah, that's why strpos will make his life much easier :) Can you explain how you'd use strpos() in this situation? I was going to ask earlier, but didn't bother, but now I'm curious... -- Mike Johnson Smarter Living, Inc. Web Developerwww.smartertravel.com [EMAIL PROTECTED] (617) 886-5539 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] preg_match - help please
On Wed, 2005-07-27 at 11:41 -0400, Mike Johnson wrote:
From: André Medeiros [mailto:[EMAIL PROTECTED]
On Wed, 2005-07-27 at 16:16 +0100, Mark Rees wrote:
Or even four - like Rafael van der Vaart for example - so
make sure that the
surname box matches spaces as well, and special characters
like the ê, as
well as ' as in John O'Kane
Yeah, that's why strpos will make his life much easier :)
Can you explain how you'd use strpos() in this situation? I was going to ask
earlier, but didn't bother, but now I'm curious...
That's not very nice of you, saying that to people who try to help ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
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Re: [PHP] preg_match - help please
André Medeiros wrote:
That's not very nice of you, saying that to people who try to help ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
How does that match Firstname Lastname better than a regex? That will
return true as long as there is at least one space, no matter what the
rest of the submission is. I could submit $^#^$# )([EMAIL PROTECTED], or I
could submit just a single space, and that would return true. strpos()
has it's uses, but this isn't one of them.
--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
[EMAIL PROTECTED]
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RE: [PHP] preg_match - help please
From: André Medeiros [mailto:[EMAIL PROTECTED]
On Wed, 2005-07-27 at 11:41 -0400, Mike Johnson wrote:
From: André Medeiros [mailto:[EMAIL PROTECTED]
On Wed, 2005-07-27 at 16:16 +0100, Mark Rees wrote:
Or even four - like Rafael van der Vaart for example - so
make sure that the
surname box matches spaces as well, and special characters
like the ê, as
well as ' as in John O'Kane
Yeah, that's why strpos will make his life much easier :)
Can you explain how you'd use strpos() in this situation? I
was going to ask earlier, but didn't bother, but now I'm curious...
That's not very nice of you, saying that to people who try to help ;)
Well, it could be argued that an obtuse link to the online docs and nothing
else isn't trying to help. ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
Gotcha. Except that it'll accept a ' ' string as valid. :P
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Web Developerwww.smartertravel.com
[EMAIL PROTECTED] (617) 886-5539
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Re: [PHP] preg_match - help please
On Wed, 2005-07-27 at 11:55 -0400, John Nichel wrote:
André Medeiros wrote:
That's not very nice of you, saying that to people who try to help ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
How does that match Firstname Lastname better than a regex? That will
return true as long as there is at least one space, no matter what the
rest of the submission is. I could submit $^#^$# )([EMAIL PROTECTED],
or I
could submit just a single space, and that would return true. strpos()
has it's uses, but this isn't one of them.
--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
[EMAIL PROTECTED]
There is a large number of sittuations that the regex won't work in.
Special characters aren't included (from what I can understand using my
weak regex knowlege), you could even be chinese, and it wouldn't work.
If you use strpos with trim and strlen cleverlly, you won't have to
worry about it again.
My $0.02
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Re: [PHP] preg_match - help please
André Medeiros wrote:
On Wed, 2005-07-27 at 11:55 -0400, John Nichel wrote:
André Medeiros wrote:
That's not very nice of you, saying that to people who try to help ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
How does that match Firstname Lastname better than a regex? That will
return true as long as there is at least one space, no matter what the
rest of the submission is. I could submit $^#^$# )([EMAIL PROTECTED], or I
could submit just a single space, and that would return true. strpos()
has it's uses, but this isn't one of them.
There is a large number of sittuations that the regex won't work in.
Special characters aren't included (from what I can understand using my
weak regex knowlege), you could even be chinese, and it wouldn't work.
If you use strpos with trim and strlen cleverlly, you won't have to
worry about it again.
My $0.02
You can trim whitespace and check the length until the cows come home,
and that still won't stop a string such as #T* [EMAIL PROTECTED]. A regex can
cover practicaly every situation for a name submission; it all depends
on how deep you want to validate. strpos() has too narrow of a scope to
match a complex pattern.
--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
[EMAIL PROTECTED]
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Re: [PHP] preg_match - help please
On Wed, 2005-07-27 at 12:30 -0400, John Nichel wrote:
André Medeiros wrote:
On Wed, 2005-07-27 at 11:55 -0400, John Nichel wrote:
André Medeiros wrote:
That's not very nice of you, saying that to people who try to help ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
How does that match Firstname Lastname better than a regex? That will
return true as long as there is at least one space, no matter what the
rest of the submission is. I could submit $^#^$# )([EMAIL
PROTECTED], or I
could submit just a single space, and that would return true. strpos()
has it's uses, but this isn't one of them.
There is a large number of sittuations that the regex won't work in.
Special characters aren't included (from what I can understand using my
weak regex knowlege), you could even be chinese, and it wouldn't work.
If you use strpos with trim and strlen cleverlly, you won't have to
worry about it again.
My $0.02
You can trim whitespace and check the length until the cows come home,
and that still won't stop a string such as #T* [EMAIL PROTECTED]. A regex
can
cover practicaly every situation for a name submission; it all depends
on how deep you want to validate. strpos() has too narrow of a scope to
match a complex pattern.
--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
[EMAIL PROTECTED]
You can have four words to describe a first and last name... you can
have other alphabets, like arabian, chinese, etc... inserting accented
characters alone would make that a big, nasty regex, let alone
predicting ways you can describe first/last names.
I'm not saying that I have the _BEST_ sollution. All I'm saying is that
there are sittuations that are out of your control, and it seems to me
this might be the easiest way out, guaranteeing that there are at least
two words.
If you find a way to fit accented characters / other alphabets there
nicelly, be my guest :)
Take care.
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Re: [PHP] preg_match - help please
André Medeiros wrote:
On Wed, 2005-07-27 at 12:30 -0400, John Nichel wrote:
André Medeiros wrote:
On Wed, 2005-07-27 at 11:55 -0400, John Nichel wrote:
André Medeiros wrote:
That's not very nice of you, saying that to people who try to help ;)
if( strpos( $_POST['frmName'], ' ' ) === false ) {
// Do error handling here
} else {
// All is OK :)
}
How does that match Firstname Lastname better than a regex? That will
return true as long as there is at least one space, no matter what the
rest of the submission is. I could submit $^#^$# )([EMAIL PROTECTED], or I
could submit just a single space, and that would return true. strpos()
has it's uses, but this isn't one of them.
There is a large number of sittuations that the regex won't work in.
Special characters aren't included (from what I can understand using my
weak regex knowlege), you could even be chinese, and it wouldn't work.
If you use strpos with trim and strlen cleverlly, you won't have to
worry about it again.
My $0.02
You can trim whitespace and check the length until the cows come home,
and that still won't stop a string such as #T* [EMAIL PROTECTED]. A regex can
cover practicaly every situation for a name submission; it all depends
on how deep you want to validate. strpos() has too narrow of a scope to
match a complex pattern.
You can have four words to describe a first and last name... you can
have other alphabets, like arabian, chinese, etc... inserting accented
characters alone would make that a big, nasty regex, let alone
predicting ways you can describe first/last names.
And this can all be matched with a regex. Like I said, it depends on
how deep you want to validate.
I'm not saying that I have the _BEST_ sollution. All I'm saying is that
there are sittuations that are out of your control, and it seems to me
this might be the easiest way out, guaranteeing that there are at least
two words.
But it doesn't even guarantee that. As shown previously, it will return
true even on strings that have non-word characters in them (no matter
the language). The only thing you're guaranteeing with strpos (
$string, ); is that the string contains a space...that's it; and
basically that's what you're limited too, until you start running other
functions to check/remove other parts of the string
If you find a way to fit accented characters / other alphabets there
nicelly, be my guest :)
It's really quite easy, when you look at it from the other direction.
When you're trying to match a pattern that can contain just about
anything and be considered valid, it might be best to check for
characters that you _do not_ want in there. With that in mind, there's
no reason to build a regex that can account for every possible alphabet
and/or accents. Make sure it contains a space, but doesn't contain
characters we don't want (such as [EMAIL PROTECTED]).
--
John C. Nichel
ÜberGeek
KegWorks.com
716.856.9675
[EMAIL PROTECTED]
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