Re: [PHP] regex pattern for extracting URLs
Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a quick hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html; class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
Looking at this document from an XML standpoint, I could see doing this rather
easily. Without having to use regex. You might look into using DomDocument and
simpleXML to complete the task.
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Re: [PHP] regex pattern for extracting URLs
On Fri, 2009-10-23 at 13:23 -0400, Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a quick hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html; class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
preg_match_all('#a[\s]+[^]*href\s*=\s*[\\']+([^
\\']+?).+?Continue/a#i', $html, $matches);
I just changed your regex a bit. What your regex was previously doing
was matching everything from the first quote after the href= right up
until the first it found, which would usually be the one that closes
the opening tag. You could make it a bit more intelligent if you wished
with backreferencing to make sure it matches against the same type of
quotation character it matched as the start of the href's value.
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] regex pattern for extracting URLs
On Fri, Oct 23, 2009 at 1:28 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:23 -0400, Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a quick hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html; class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
preg_match_all('#a[\s]+[^]*href\s*=\s*[\\']+([^\\']+?).+?Continue/a#i',
$html, $matches);
I just changed your regex a bit. What your regex was previously doing was
matching everything from the first quote after the href= right up until the
first it found, which would usually be the one that closes the opening
tag. You could make it a bit more intelligent if you wished with
backreferencing to make sure it matches against the same type of quotation
character it matched as the start of the href's value.
Thanks,
Ash
http://www.ashleysheridan.co.uk
I appreciate the help. However, when try this I only get the first
character of the URL. Can you double check it please.
Thanks again
Re: [PHP] regex pattern for extracting URLs
On Fri, 2009-10-23 at 13:45 -0400, Brad Fuller wrote:
On Fri, Oct 23, 2009 at 1:28 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:23 -0400, Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a quick
hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html; class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
preg_match_all('#a[\s]+[^]*href\s*=\s*[\\']+([^\\']+?).+?Continue/a#i',
$html, $matches);
I just changed your regex a bit. What your regex was previously doing was
matching everything from the first quote after the href= right up until the
first it found, which would usually be the one that closes the opening
tag. You could make it a bit more intelligent if you wished with
backreferencing to make sure it matches against the same type of quotation
character it matched as the start of the href's value.
Thanks,
Ash
http://www.ashleysheridan.co.uk
I appreciate the help. However, when try this I only get the first
character of the URL. Can you double check it please.
Thanks again
I think it's probably the first ? in ([^\\']+?)
Remove that and it should do the trick
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] regex pattern for extracting URLs
On Fri, Oct 23, 2009 at 1:48 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:45 -0400, Brad Fuller wrote:
On Fri, Oct 23, 2009 at 1:28 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:23 -0400, Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a quick
hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html;
class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
preg_match_all('#a[\s]+[^]*href\s*=\s*[\\']+([^\\']+?).+?Continue/a#i',
$html, $matches);
I just changed your regex a bit. What your regex was previously doing
was
matching everything from the first quote after the href= right up until
the
first it found, which would usually be the one that closes the
opening
tag. You could make it a bit more intelligent if you wished with
backreferencing to make sure it matches against the same type of
quotation
character it matched as the start of the href's value.
Thanks,
Ash
http://www.ashleysheridan.co.uk
I appreciate the help. However, when try this I only get the first
character of the URL. Can you double check it please.
Thanks again
I think it's probably the first ? in ([^\\']+?)
Remove that and it should do the trick
Thanks,
Ash
http://www.ashleysheridan.co.uk
Hi Brad,
I agree with Jim.
Take a look at this. It might help.
?php
$xml_string = TEXT_BOUNDARY
html
head
title/title
/head
body
div
a href=http://example.com/path/to/urlA.html;Continue/a
a href=http://example.com/path/to/url2.html;Brad Fuller/a
a href=http://example.com/path/to/urlB.html;Continue/a
a href=http://example.com/path/to/url4.html;PHP.net/a
a href=http://example.com/path/to/urlC.html;
class=linkContinue/a
a style=font-size: 12px href=
http://example.com/path/to/urlD.html;
onclick=someFunction('foo','bar')Continue/a
/div
/body
/html
TEXT_BOUNDARY;
$xml = simplexml_load_string($xml_string);
$continue_hrefs = $xml-xpath(//a[text() = 'Continue']/@href);
print_r($continue_hrefs);
?
--
Good Enough is not good enough.
To give anything less than your best is to sacrifice the gift.
Quality First. Measure Twice. Cut Once.
Re: [PHP] regex pattern for extracting URLs
On Fri, Oct 23, 2009 at 1:48 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:45 -0400, Brad Fuller wrote:
On Fri, Oct 23, 2009 at 1:28 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:23 -0400, Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a quick
hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html; class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
preg_match_all('#a[\s]+[^]*href\s*=\s*[\\']+([^\\']+?).+?Continue/a#i',
$html, $matches);
I just changed your regex a bit. What your regex was previously doing was
matching everything from the first quote after the href= right up until the
first it found, which would usually be the one that closes the opening
tag. You could make it a bit more intelligent if you wished with
backreferencing to make sure it matches against the same type of quotation
character it matched as the start of the href's value.
Thanks,
Ash
http://www.ashleysheridan.co.uk
I appreciate the help. However, when try this I only get the first
character of the URL. Can you double check it please.
Thanks again
I think it's probably the first ? in ([^\\']+?)
Remove that and it should do the trick
Thanks,
Ash
http://www.ashleysheridan.co.uk
That did the trick. Thanks Ash you are awesome!
Also thanks Jim for your suggestion. I may move to SimpleXML if the project
grows much bigger. But for now I was looking for a nice one liner and this
is it.
Cheers,
Brad
Re: [PHP] regex pattern for extracting URLs
On Fri, Oct 23, 2009 at 1:54 PM, Israel Ekpo israele...@gmail.com wrote:
On Fri, Oct 23, 2009 at 1:48 PM, Ashley Sheridan a...@ashleysheridan.co.uk
wrote:
On Fri, 2009-10-23 at 13:45 -0400, Brad Fuller wrote:
On Fri, Oct 23, 2009 at 1:28 PM, Ashley Sheridan
a...@ashleysheridan.co.ukwrote:
On Fri, 2009-10-23 at 13:23 -0400, Brad Fuller wrote:
I'm looking for a regular expression to accomplish a specific task.
I'm hoping someone who's really good at regex patterns can lend a
quick hand.
I need a regex pattern that will grab URLs out of HTML that have a
certain link text. (i.e. the word Continue)
This is what I have so far but it does not work properly (If there are
other attributes in the a tag it returns them as part of the URL.)
preg_match_all('#a[\s]+[^]*href\s*=\s*([\\']+)([^]+?)(\1|)Continue/a#i',
$html, $matches);
It needs to be able to extract the URL and disregard arbitrary
attributes in the HTML tag
Test it with the following examples:
a href=/path/to/url.htmlContinue/a
a href='/path/to/url.html'Continue/a
a href=http://example.com/path/to/url.html;
class=linkContinue/a
a style=font-size: 12px href=http://example.com/path/to/url.html;
onlick=someFunction('foo','bar')Continue/a
Please reply
Your help is much appreciated.
Thanks in advance,
Brad F.
preg_match_all('#a[\s]+[^]*href\s*=\s*[\\']+([^\\']+?).+?Continue/a#i',
$html, $matches);
I just changed your regex a bit. What your regex was previously doing
was
matching everything from the first quote after the href= right up
until the
first it found, which would usually be the one that closes the
opening
tag. You could make it a bit more intelligent if you wished with
backreferencing to make sure it matches against the same type of
quotation
character it matched as the start of the href's value.
Thanks,
Ash
http://www.ashleysheridan.co.uk
I appreciate the help. However, when try this I only get the first
character of the URL. Can you double check it please.
Thanks again
I think it's probably the first ? in ([^\\']+?)
Remove that and it should do the trick
Thanks,
Ash
http://www.ashleysheridan.co.uk
Hi Brad,
I agree with Jim.
Take a look at this. It might help.
?php
$xml_string = TEXT_BOUNDARY
html
head
title/title
/head
body
div
a href=http://example.com/path/to/urlA.html;Continue/a
a href=http://example.com/path/to/url2.html;Brad Fuller/a
a href=http://example.com/path/to/urlB.html;Continue/a
a href=http://example.com/path/to/url4.html;PHP.net/a
a href=http://example.com/path/to/urlC.html;
class=linkContinue/a
a style=font-size: 12px
href=http://example.com/path/to/urlD.html;
onclick=someFunction('foo','bar')Continue/a
/div
/body
/html
TEXT_BOUNDARY;
$xml = simplexml_load_string($xml_string);
$continue_hrefs = $xml-xpath(//a[text() = 'Continue']/@href);
print_r($continue_hrefs);
?
Thanks, I'm sure I will use this at some point in the future :)
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Re: [PHP] regex pattern for extracting URLs
On Fri, Oct 23, 2009 at 01:54:40PM -0400, Brad Fuller wrote: Thanks Ash you are awesome! Brad, you're violating list rules. We never say that kind of thing to Ash *where he can hear it*. Only behind his back. ;-} Paul -- Paul M. Foster -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] regex pattern for extracting URLs
On Fri, 2009-10-23 at 15:17 -0400, Paul M Foster wrote: On Fri, Oct 23, 2009 at 01:54:40PM -0400, Brad Fuller wrote: Thanks Ash you are awesome! Brad, you're violating list rules. We never say that kind of thing to Ash *where he can hear it*. Only behind his back. ;-} Paul -- Paul M. Foster Well, it makes a refreshing change, off list people just want to insult me :p Thanks, Ash http://www.ashleysheridan.co.uk
