[PHP] Re: stripping quotes from urls and images
hi guys i now have a problem with urls i need to remove the quotes from both href= and src= so a href=blah img src= needs to be a href= img src= and i cant remove quotes from all string matches :| Someone mentioned this already, but you should really know that if you remove quotes from your HTML attributes, your HTML will no longer be forward-compatible with XHTML, which you really should strive for. What reason would you have for removing the quotes? There must be a better workaround than removing them. Regarding your question, it really depends on how you can operate on your HTML. Where is your HTML? Is it in a database, string, etc? Is it all in one chunk? That is, do you have stuff like this: a href=some/urlimg src=some/imageThis link has quotes/img/a that can't just have all quotes removed entirely from it? If you really need to remove quotes from attributes (and I don't think you do), and all of your HTML is in one big string, you're looking at a regular expression. Read up on them here: http://www.php.net/manual/en/pcre.pattern.syntax.php Yep, that's a lot of reading. But you should learn about regular expressions; they'll be useful all over the place. If you happen to be on a Linux/Unix/BSD/whatever machine that has man pages and perl installed, check out `man perlre`. Or read on-line here: http://www.perldoc.com/perl5.6.1/pod/perlre.html Some things to watch out for -- even if you do want to remove quotes from your attributes, I'm 100% sure you don't want to remove from *all* of them. Like this: img src=/some/image/ title=this is a pop-up description / Removing the quotes from the title attribute will likely break at least some browsers, if not all. So your regular expression needs to be able to handle that gracefully. Good luck! -- [ joel boonstra | [EMAIL PROTECTED] ] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] RE: stripping quotes from urls and images
i sorter need a preg example i'm not very good at it , and its for a wysiwyg dhtml editor , it reformats those tags if the quotes are there when i load the content and stuffs the code -Original Message- From: Joel Boonstra [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 01, 2002 6:18 AM To: [EMAIL PROTECTED] Cc: electroteque Subject: Re: stripping quotes from urls and images hi guys i now have a problem with urls i need to remove the quotes from both href= and src= so a href=blah img src= needs to be a href= img src= and i cant remove quotes from all string matches :| Someone mentioned this already, but you should really know that if you remove quotes from your HTML attributes, your HTML will no longer be forward-compatible with XHTML, which you really should strive for. What reason would you have for removing the quotes? There must be a better workaround than removing them. Regarding your question, it really depends on how you can operate on your HTML. Where is your HTML? Is it in a database, string, etc? Is it all in one chunk? That is, do you have stuff like this: a href=some/urlimg src=some/imageThis link has quotes/img/a that can't just have all quotes removed entirely from it? If you really need to remove quotes from attributes (and I don't think you do), and all of your HTML is in one big string, you're looking at a regular expression. Read up on them here: http://www.php.net/manual/en/pcre.pattern.syntax.php Yep, that's a lot of reading. But you should learn about regular expressions; they'll be useful all over the place. If you happen to be on a Linux/Unix/BSD/whatever machine that has man pages and perl installed, check out `man perlre`. Or read on-line here: http://www.perldoc.com/perl5.6.1/pod/perlre.html Some things to watch out for -- even if you do want to remove quotes from your attributes, I'm 100% sure you don't want to remove from *all* of them. Like this: img src=/some/image/ title=this is a pop-up description / Removing the quotes from the title attribute will likely break at least some browsers, if not all. So your regular expression needs to be able to handle that gracefully. Good luck! -- [ joel boonstra | [EMAIL PROTECTED] ] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] RE: stripping quotes from urls and images
I'm reminded of a reasonable quote: It's easy to write HTML, and impossible to parse it Because HTML is *SO* easy to write, and has so many options, and is easy to screw up AND have browsers still work, it's totally evil to parse. You end up with massive regular expressions, or a state engine which reads the string one character at a time, and can keep track of what's going on, then make changes. I've been working on a state engine for a while, with some success. Basically, a browser is just a big state engine. I think you should perhaps look at your problem from another angle... there are MANY valid ways to write HTML tags... whatever your system does, it should support user preferences. A HREF=foo.php = valid A HREF=foo.php = valid A HREF='foo.php' = valid Plus combinations of single and double quotes for different attributes, etc etc. Check out http://www.w3.org/TR/1999/REC-html401-19991224/intro/sgmltut.html Justin French on 01/08/02 10:43 AM, electroteque ([EMAIL PROTECTED]) wrote: i sorter need a preg example i'm not very good at it , and its for a wysiwyg dhtml editor , it reformats those tags if the quotes are there when i load the content and stuffs the code -Original Message- From: Joel Boonstra [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 01, 2002 6:18 AM To: [EMAIL PROTECTED] Cc: electroteque Subject: Re: stripping quotes from urls and images hi guys i now have a problem with urls i need to remove the quotes from both href= and src= so a href=blah img src= needs to be a href= img src= and i cant remove quotes from all string matches :| Someone mentioned this already, but you should really know that if you remove quotes from your HTML attributes, your HTML will no longer be forward-compatible with XHTML, which you really should strive for. What reason would you have for removing the quotes? There must be a better workaround than removing them. Regarding your question, it really depends on how you can operate on your HTML. Where is your HTML? Is it in a database, string, etc? Is it all in one chunk? That is, do you have stuff like this: a href=some/urlimg src=some/imageThis link has quotes/img/a that can't just have all quotes removed entirely from it? If you really need to remove quotes from attributes (and I don't think you do), and all of your HTML is in one big string, you're looking at a regular expression. Read up on them here: http://www.php.net/manual/en/pcre.pattern.syntax.php Yep, that's a lot of reading. But you should learn about regular expressions; they'll be useful all over the place. If you happen to be on a Linux/Unix/BSD/whatever machine that has man pages and perl installed, check out `man perlre`. Or read on-line here: http://www.perldoc.com/perl5.6.1/pod/perlre.html Some things to watch out for -- even if you do want to remove quotes from your attributes, I'm 100% sure you don't want to remove from *all* of them. Like this: img src=/some/image/ title=this is a pop-up description / Removing the quotes from the title attribute will likely break at least some browsers, if not all. So your regular expression needs to be able to handle that gracefully. Good luck! -- [ joel boonstra | [EMAIL PROTECTED] ] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] RE: stripping quotes from urls and images
hi mate , i sorter just need a regular expression only when loading it , i use tidy to reformat it back to go into the database its how it handles tags, can anyone help ? -Original Message- From: Justin French [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 01, 2002 11:59 AM To: electroteque; Joel Boonstra; [EMAIL PROTECTED] Subject: Re: [PHP] RE: stripping quotes from urls and images I'm reminded of a reasonable quote: It's easy to write HTML, and impossible to parse it Because HTML is *SO* easy to write, and has so many options, and is easy to screw up AND have browsers still work, it's totally evil to parse. You end up with massive regular expressions, or a state engine which reads the string one character at a time, and can keep track of what's going on, then make changes. I've been working on a state engine for a while, with some success. Basically, a browser is just a big state engine. I think you should perhaps look at your problem from another angle... there are MANY valid ways to write HTML tags... whatever your system does, it should support user preferences. A HREF=foo.php = valid A HREF=foo.php = valid A HREF='foo.php' = valid Plus combinations of single and double quotes for different attributes, etc etc. Check out http://www.w3.org/TR/1999/REC-html401-19991224/intro/sgmltut.html Justin French on 01/08/02 10:43 AM, electroteque ([EMAIL PROTECTED]) wrote: i sorter need a preg example i'm not very good at it , and its for a wysiwyg dhtml editor , it reformats those tags if the quotes are there when i load the content and stuffs the code -Original Message- From: Joel Boonstra [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 01, 2002 6:18 AM To: [EMAIL PROTECTED] Cc: electroteque Subject: Re: stripping quotes from urls and images hi guys i now have a problem with urls i need to remove the quotes from both href= and src= so a href=blah img src= needs to be a href= img src= and i cant remove quotes from all string matches :| Someone mentioned this already, but you should really know that if you remove quotes from your HTML attributes, your HTML will no longer be forward-compatible with XHTML, which you really should strive for. What reason would you have for removing the quotes? There must be a better workaround than removing them. Regarding your question, it really depends on how you can operate on your HTML. Where is your HTML? Is it in a database, string, etc? Is it all in one chunk? That is, do you have stuff like this: a href=some/urlimg src=some/imageThis link has quotes/img/a that can't just have all quotes removed entirely from it? If you really need to remove quotes from attributes (and I don't think you do), and all of your HTML is in one big string, you're looking at a regular expression. Read up on them here: http://www.php.net/manual/en/pcre.pattern.syntax.php Yep, that's a lot of reading. But you should learn about regular expressions; they'll be useful all over the place. If you happen to be on a Linux/Unix/BSD/whatever machine that has man pages and perl installed, check out `man perlre`. Or read on-line here: http://www.perldoc.com/perl5.6.1/pod/perlre.html Some things to watch out for -- even if you do want to remove quotes from your attributes, I'm 100% sure you don't want to remove from *all* of them. Like this: img src=/some/image/ title=this is a pop-up description / Removing the quotes from the title attribute will likely break at least some browsers, if not all. So your regular expression needs to be able to handle that gracefully. Good luck! -- [ joel boonstra | [EMAIL PROTECTED] ] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
