I’m trying to get the name/value information from input tags in a form. The problem is that the tags are written in unpredictable formats, sometimes the value isn’t specified…
<input type="text" name="thename" value="the value">
or
<input type="text" name='thename' value="the value">
or
<input type="text" NAME="thename" ID="myid" VALUE='the value'>
or
<input type="text" name="thename">
I’ve come up with the following regular expression:
/name=['|\\"]([\\w _]+)['|\\"].*value=['|\\"](.*?)['|\\"]/i
It gets the name consistently and will get the name/value when they are both in the tag. It doesn’t get anything when value=“…” is missing. I’ve tried everything I can think of on value='|\" ['|\"] to make it optional but nothing I do works.
Any help would be greatly appreciated
This works great! You wouldn’t know how to add an input field to the form I’m testing on using the DOM here would you?
AnthonySterling:
Sure, that’s not an issue.
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?>
Thanks! I’ll give that a shot.
AnthonySterling:
Sure, that’s not an issue.
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http://www.sitepoint.com/blogs/2010/07/02/shorter-javascript-function-statement
http://www.sitepoint.com/blogs/2010/07/02/shorter-javascript-function-statement
http://www.sitepoint.com/blogs/2010/07/02/shorter-javascript-function-statement#comments
http://www.sitepoint.com/blogs/category/tech/
http://www.sitepoint.com/blogs/2010/07/07/4-elements-of-trust-for-collaboration
http://www.sitepoint.com/blogs/2010/07/07/4-elements-of-trust-for-collaboration
http://www.sitepoint.com/blogs/2010/07/07/4-elements-of-trust-for-collaboration
/webslices/business.php
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/06/facebook-fan-page-apps
http://www.sitepoint.com/blogs/2010/07/06/facebook-fan-page-apps
http://www.sitepoint.com/blogs/2010/07/06/facebook-fan-page-apps#comments
http://www.sitepoint.com/blogs/2010/07/03/solution-to-social-media-noise
http://www.sitepoint.com/blogs/2010/07/03/solution-to-social-media-noise
http://www.sitepoint.com/blogs/2010/07/03/solution-to-social-media-noise#comments
http://www.sitepoint.com/blogs/2010/07/02/benefits-of-guest-blogging
http://www.sitepoint.com/blogs/2010/07/02/benefits-of-guest-blogging
http://www.sitepoint.com/blogs/2010/07/02/benefits-of-guest-blogging#comments
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/blogs/2010/07/01/the-two-ingredients-of-successful-freelancing
http://www.sitepoint.com/blogs/2010/07/01/the-two-ingredients-of-successful-freelancing
http://www.sitepoint.com/blogs/2010/07/01/the-two-ingredients-of-successful-freelancing#comments
http://www.sitepoint.com/blogs/2010/07/01/how-to-revamp-your-marketing-perspective
http://www.sitepoint.com/blogs/2010/07/01/how-to-revamp-your-marketing-perspective
http://www.sitepoint.com/blogs/category/business/
http://www.twitter.com/sitepointdotcom
http://www.facebook.com/sitepoint
http://www.sitepoint.com/launch/54ac38/3/157/
http://www.sitepoint.com/books/phpmysql4/
http://www.sitepoint.com/launch/54ac38/2/157/
http://www.sitepoint.com/launch/54ac38/3/157/
https://sitepoint.com/bookstore/go/157
http://www.sitepoint.com/books/html2/
http://www.sitepoint.com/launch/693c9b/2/145/
http://www.sitepoint.com/launch/693c9b/3/145/
https://sitepoint.com/bookstore/go/145
http://www.sitepoint.com/launch/012379/3/144/
http://www.sitepoint.com/launch/012379/2/144/
http://www.sitepoint.com/launch/012379/3/144/
https://sitepoint.com/bookstore/go/144
http://www.sitepoint.com/launch/7771f8/3/83/
http://www.sitepoint.com/books/design1/
http://www.sitepoint.com/launch/7771f8/2/83/
http://www.sitepoint.com/launch/7771f8/3/83/
https://sitepoint.com/bookstore/go/83
/webslices/whatshot.php
http://articles.sitepoint.com/article/intro-business-catalyst/
http://articles.sitepoint.com/article/intro-business-catalyst/
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/blogs/2010/06/15/top-10-web-design-mistakes
http://www.sitepoint.com/blogs/2010/06/15/top-10-web-design-mistakes
http://www.sitepoint.com/blogs/2010/06/15/top-10-web-design-mistakes#comments
http://articles.sitepoint.com/article/reseller-hosting-demystified-2010/
http://articles.sitepoint.com/article/reseller-hosting-demystified-2010/
http://www.sitepoint.com/forums/showthread?t=672308
http://www.sitepoint.com/blogs/2010/06/22/using-a-soft-sales-approach
http://www.sitepoint.com/blogs/2010/06/22/using-a-soft-sales-approach
http://www.sitepoint.com/blogs/2010/06/22/using-a-soft-sales-approach#comments
http://www.sitepoint.com/forums/showthread?t=674721
http://www.sitepoint.com/forums/showthread?t=674721
http://www.sitepoint.com/forums/showthread?t=674721
http://www.sitepoint.com/about/terms
http://articles.sitepoint.com/?source=homepage
http://www.sitepoint.com/blogs?source=homepage
http://reference.sitepoint.com?source=homepage
http://www.sitepoint.com/newsletters?source=homepage
http://www.sitepoint.com/books?source=homepage
http://www.sitepoint.com/videos?source=homepage
http://tools.sitepoint.com?source=homepage
http://www.sitepoint.com/about/writeforus?source=homepage
http://www.sitepoint.com/forums/register.php?source=homepage
http://www.sitepoint.com/podcast?source=homepage
http://www.sitepoint.com/newsletter?source=homepage
http://www.sitepoint.com/subscribe?source=homepage
http://marketplace.sitepoint.com?source=homepage
http://m.sitepoint.com?source=homepage
http://www.sitepoint.com/about?source=homepage
http://www.sitepoint.com/about/jobs?source=homepage
http://www.sitepoint.com/contact?source=homepage
http://www.sitepoint.com/mediakit?source=homepage
http://search.sitepoint.com?source=homepage
http://www.sitepoint.com/sitemap?source=homepage
http://www.twitter.com/sitepointdotcom
http://www.facebook.com/sitepoint
http://www.sitepoint.com.au?source=blogs
http://www.99designs.com?source=blogs
#sitepoint-logo
*/
?>
can’t you check for an empty value first and supply a default before performing the reg ex and then strip it out when needed, or am i missing the point
I’m getting this information from another page, reading it in using file and then parsing it…
Why not use DOM or SimpleXML ?
Sure, that’s not an issue.
<?php
$doc = new DOMDocument();
@$doc->loadHTMLFile('http://www.sitepoint.com/');
if(false !== $doc){
foreach($doc->getElementsByTagName('a') as $a){
if($a->hasAttribute('href')){
printf('%s<br />', $a->getAttribute('href'));
}
}
}
/*
http://www.sitepoint.com/
http://www.sitepoint.com/
http://www.sitepoint.com/blogs/
http://www.sitepoint.com/recentarticles/
http://www.sitepoint.com/books/
http://www.sitepoint.com/kits/
http://www.sitepoint.com/videos/
http://marketplace.sitepoint.com/
http://www.sitepoint.com/forums/
http://reference.sitepoint.com/
http://articles.sitepoint.com/article/silverlight-php-twitter/
http://www.sitepoint.com/forums/showthread?t=687989
http://articles.sitepoint.com/article/silverlight-php-twitter/
http://articles.sitepoint.com/article/silverlight-php-twitter/
/webslices/news.php
http://www.sitepoint.com/blogs/2010/07/09/handling-client-data
http://www.sitepoint.com/blogs/2010/07/09/handling-client-data
http://www.sitepoint.com/blogs/2010/07/09/handling-client-data
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php#comments
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released#comments
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0#comments
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose#comments
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose
/blogs/
http://articles.sitepoint.com/article/photography-for-the-web-composition/
http://www.sitepoint.com/forums/showthread?t=687788
http://articles.sitepoint.com/article/photography-for-the-web-composition/
http://articles.sitepoint.com/article/photography-for-the-web-composition/
/webslices/design.php
http://www.sitepoint.com/forums/showthread?t=687720
http://www.sitepoint.com/forums/showthread?t=687720
http://www.sitepoint.com/forums/showthread?t=687720
http://www.sitepoint.com/blogs/2010/07/04/red-cover-re-design-for-penguin
http://www.sitepoint.com/blogs/2010/07/04/red-cover-re-design-for-penguin
http://www.sitepoint.com/blogs/2010/07/04/red-cover-re-design-for-penguin#comments
http://www.sitepoint.com/forums/showthread?t=687217
http://www.sitepoint.com/forums/showthread?t=687217
http://www.sitepoint.com/forums/showthread?t=687217
http://www.sitepoint.com/blogs/2010/07/03/twitter-meets-3d-in-robyns-online-video
http://www.sitepoint.com/blogs/2010/07/03/twitter-meets-3d-in-robyns-online-video
http://www.sitepoint.com/blogs/2010/07/03/twitter-meets-3d-in-robyns-online-video#comments
http://www.sitepoint.com/blogs/2010/07/02/visual-harmony-in-design-part-3-thematic-reference
http://www.sitepoint.com/blogs/2010/07/02/visual-harmony-in-design-part-3-thematic-reference
http://www.sitepoint.com/blogs/2010/07/02/visual-harmony-in-design-part-3-thematic-reference#comments
http://www.sitepoint.com/forums/showthread?t=686674
http://www.sitepoint.com/forums/showthread?t=686674
http://www.sitepoint.com/forums/showthread?t=686674
http://www.sitepoint.com/blogs/2010/06/30/8-free-stylish-fonts-from-typographers-on-behance
http://www.sitepoint.com/blogs/2010/06/30/8-free-stylish-fonts-from-typographers-on-behance
http://www.sitepoint.com/blogs/2010/06/30/8-free-stylish-fonts-from-typographers-on-behance#comments
http://www.sitepoint.com/forums/showthread?t=686399
http://www.sitepoint.com/forums/showthread?t=686399
http://www.sitepoint.com/forums/showthread?t=686399
http://www.sitepoint.com/blogs/category/design/
http://www.sitepoint.com/blogs/2010/07/08/mozilla-firefox-apple-iphone
http://www.sitepoint.com/blogs/2010/07/08/mozilla-firefox-apple-iphone#comments
http://www.sitepoint.com/blogs/2010/07/08/mozilla-firefox-apple-iphone
http://www.sitepoint.com/blogs/2010/07/08/mozilla-firefox-apple-iphone
/webslices/tech.php
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php
http://www.sitepoint.com/blogs/2010/07/08/creating-a-simple-twitter-client-with-silverlight-and-php#comments
http://www.sitepoint.com/forums/showthread?t=687989
http://www.sitepoint.com/forums/showthread?t=687989
http://www.sitepoint.com/forums/showthread?t=687989
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released
http://www.sitepoint.com/blogs/2010/07/07/opera-10-60-released#comments
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0
http://www.sitepoint.com/blogs/2010/07/06/how-to-use-the-new-custom-menu-feature-in-wordpress-3-0#comments
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose
http://www.sitepoint.com/blogs/2010/07/06/canvas-vs-svg-how-to-choose#comments
http://www.sitepoint.com/blogs/2010/07/05/microsoft-office-online-word-excel-powerpoint-onenote
http://www.sitepoint.com/blogs/2010/07/05/microsoft-office-online-word-excel-powerpoint-onenote
http://www.sitepoint.com/blogs/2010/07/05/microsoft-office-online-word-excel-powerpoint-onenote#comments
http://www.sitepoint.com/forums/showthread?t=687259
http://www.sitepoint.com/forums/showthread?t=687259
http://www.sitepoint.com/forums/showthread?t=687259
http://www.sitepoint.com/blogs/2010/07/02/shorter-javascript-function-statement
http://www.sitepoint.com/blogs/2010/07/02/shorter-javascript-function-statement
http://www.sitepoint.com/blogs/2010/07/02/shorter-javascript-function-statement#comments
http://www.sitepoint.com/blogs/category/tech/
http://www.sitepoint.com/blogs/2010/07/07/4-elements-of-trust-for-collaboration
http://www.sitepoint.com/blogs/2010/07/07/4-elements-of-trust-for-collaboration
http://www.sitepoint.com/blogs/2010/07/07/4-elements-of-trust-for-collaboration
/webslices/business.php
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/notes-on-the-care-and-feeding-of-freelancers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/08/4-twitter-tools-for-followers
http://www.sitepoint.com/blogs/2010/07/06/facebook-fan-page-apps
http://www.sitepoint.com/blogs/2010/07/06/facebook-fan-page-apps
http://www.sitepoint.com/blogs/2010/07/06/facebook-fan-page-apps#comments
http://www.sitepoint.com/blogs/2010/07/03/solution-to-social-media-noise
http://www.sitepoint.com/blogs/2010/07/03/solution-to-social-media-noise
http://www.sitepoint.com/blogs/2010/07/03/solution-to-social-media-noise#comments
http://www.sitepoint.com/blogs/2010/07/02/benefits-of-guest-blogging
http://www.sitepoint.com/blogs/2010/07/02/benefits-of-guest-blogging
http://www.sitepoint.com/blogs/2010/07/02/benefits-of-guest-blogging#comments
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/blogs/2010/07/01/the-two-ingredients-of-successful-freelancing
http://www.sitepoint.com/blogs/2010/07/01/the-two-ingredients-of-successful-freelancing
http://www.sitepoint.com/blogs/2010/07/01/the-two-ingredients-of-successful-freelancing#comments
http://www.sitepoint.com/blogs/2010/07/01/how-to-revamp-your-marketing-perspective
http://www.sitepoint.com/blogs/2010/07/01/how-to-revamp-your-marketing-perspective
http://www.sitepoint.com/blogs/category/business/
http://www.twitter.com/sitepointdotcom
http://www.facebook.com/sitepoint
http://www.sitepoint.com/launch/54ac38/3/157/
http://www.sitepoint.com/books/phpmysql4/
http://www.sitepoint.com/launch/54ac38/2/157/
http://www.sitepoint.com/launch/54ac38/3/157/
https://sitepoint.com/bookstore/go/157
http://www.sitepoint.com/books/html2/
http://www.sitepoint.com/launch/693c9b/2/145/
http://www.sitepoint.com/launch/693c9b/3/145/
https://sitepoint.com/bookstore/go/145
http://www.sitepoint.com/launch/012379/3/144/
http://www.sitepoint.com/launch/012379/2/144/
http://www.sitepoint.com/launch/012379/3/144/
https://sitepoint.com/bookstore/go/144
http://www.sitepoint.com/launch/7771f8/3/83/
http://www.sitepoint.com/books/design1/
http://www.sitepoint.com/launch/7771f8/2/83/
http://www.sitepoint.com/launch/7771f8/3/83/
https://sitepoint.com/bookstore/go/83
/webslices/whatshot.php
http://articles.sitepoint.com/article/intro-business-catalyst/
http://articles.sitepoint.com/article/intro-business-catalyst/
http://www.sitepoint.com/forums/showthread?t=686859
http://www.sitepoint.com/blogs/2010/06/15/top-10-web-design-mistakes
http://www.sitepoint.com/blogs/2010/06/15/top-10-web-design-mistakes
http://www.sitepoint.com/blogs/2010/06/15/top-10-web-design-mistakes#comments
http://articles.sitepoint.com/article/reseller-hosting-demystified-2010/
http://articles.sitepoint.com/article/reseller-hosting-demystified-2010/
http://www.sitepoint.com/forums/showthread?t=672308
http://www.sitepoint.com/blogs/2010/06/22/using-a-soft-sales-approach
http://www.sitepoint.com/blogs/2010/06/22/using-a-soft-sales-approach
http://www.sitepoint.com/blogs/2010/06/22/using-a-soft-sales-approach#comments
http://www.sitepoint.com/forums/showthread?t=674721
http://www.sitepoint.com/forums/showthread?t=674721
http://www.sitepoint.com/forums/showthread?t=674721
http://www.sitepoint.com/about/terms
http://articles.sitepoint.com/?source=homepage
http://www.sitepoint.com/blogs?source=homepage
http://reference.sitepoint.com?source=homepage
http://www.sitepoint.com/newsletters?source=homepage
http://www.sitepoint.com/books?source=homepage
http://www.sitepoint.com/videos?source=homepage
http://tools.sitepoint.com?source=homepage
http://www.sitepoint.com/about/writeforus?source=homepage
http://www.sitepoint.com/forums/register.php?source=homepage
http://www.sitepoint.com/podcast?source=homepage
http://www.sitepoint.com/newsletter?source=homepage
http://www.sitepoint.com/subscribe?source=homepage
http://marketplace.sitepoint.com?source=homepage
http://m.sitepoint.com?source=homepage
http://www.sitepoint.com/about?source=homepage
http://www.sitepoint.com/about/jobs?source=homepage
http://www.sitepoint.com/contact?source=homepage
http://www.sitepoint.com/mediakit?source=homepage
http://search.sitepoint.com?source=homepage
http://www.sitepoint.com/sitemap?source=homepage
http://www.twitter.com/sitepointdotcom
http://www.facebook.com/sitepoint
http://www.sitepoint.com.au?source=blogs
http://www.99designs.com?source=blogs
#sitepoint-logo
*/
?>
The regex was looking to see if the value attribute existed or not, and getting the value if it did exist.