Re: [PHP] What is wrong with this preg_match?

[Robert Williams]

On 10/27/11 11:43, "Paul Halliday"  wrote:


>if ($argc == 1 || $argc > 2 || !preg_match("(\d{4}-\d{2}-\d{2})",
>
>Usage: ./process_patches.php 
>
>patches@innm2 ~/Code/Oculi $ ./process_patches.php 2011-01-011

The problem is that your expression basically defines a 'contains'-type
search, so it's matching the first 10 characters as required but then
simply ignoring that last, 11th character because there's no requirement
regarding it in the expression.

Try this instead:

^(\d{4}-\d{2}-\d{2})$

The ^ anchors the matching string to the beginning of the string, while
the $ anchors it to the end, which effectively forces the expression to
match the entire string, disallowing extra characters before or after it.


Regards,
Bob
--
Robert E. Williams, Jr.
Associate Vice President of Software Development
Newtek Businesss Services, Inc. -- The Small Business Authority
https://www.newtekreferrals.com/rewjr
http://www.thesba.com/







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RE: [PHP] What is wrong with this preg_match?

[Steve Staples]

-Original Message-
From: Paul Halliday [mailto:paul.halli...@gmail.com] 
Sent: Thursday, October 27, 2011 2:43 PM
To: PHP-General
Subject: [PHP] What is wrong with this preg_match?

I have the following:

if (isset($argc)) {
if ($argc == 1 || $argc > 2 || !preg_match("(\d{4}-\d{2}-\d{2})",
$argv[1])) {
echo "\nUsage: $argv[0] \n\n";
exit;
} else {
$base_date = $argv[1];
}
} else {
$base_date = date('Y-m-d');
}

When I run it:

 $ ./process_patches.php 201-01-01

Usage: ./process_patches.php 

patches@innm2 ~/Code/Oculi $ ./process_patches.php 2011-011-01

Usage: ./process_patches.php 

patches@innm2 ~/Code/Oculi $ ./process_patches.php 2011-01-011

Works..

What am I doing wrong?

Thanks!

--
Paul Halliday
http://www.squertproject.org/


Paul,

To me, it looks like you're just getting the next 2 digits, so 2011-01-011 is 
getting 2011-01-01 and truncating the last 1.

If you had used (I think)  "^(\d{4}-\d{2}-\d{2})$"  I think that would give you 
what you want... (but my reg-ex is horrible)

Steve

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