using preg_match with html comments
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
0
I want to convert into a string the html contained between these comments
<!--content-start-->
desired html
<!--content-end-->
so I use pregmatch, right?
preg_match("/<!--content-start-->(.*)<!--content-end-->/i", $rss, $content);
but it wont work. Maybe a problem with the REGEX?
Thank you.
php preg-match
edited Nov 23 '18 at 4:47
miken32
24.9k95173
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
add a comment |
0
I want to convert into a string the html contained between these comments
<!--content-start-->
desired html
<!--content-end-->
so I use pregmatch, right?
preg_match("/<!--content-start-->(.*)<!--content-end-->/i", $rss, $content);
but it wont work. Maybe a problem with the REGEX?
Thank you.
php preg-match
edited Nov 23 '18 at 4:47
miken32
24.9k95173
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
No, you don't use regular expressions to parse HTML. You use an HTML parser!
– miken32
Nov 23 '18 at 4:09
for example please?
– Cain Nuke
Nov 23 '18 at 4:11
@miken32 Although, arguably, they aren't "parsing HTML". They are simply extracting one block of text between two unique tokens (regardless of content-type). Using an HTML parser in this particular example (a simple one-off pattern matching exercise) is overkill IMO. (Only a small tweak to the OPs regex is required.)
– MrWhite
Dec 1 '18 at 1:28
add a comment |
0
0
0
I want to convert into a string the html contained between these comments
<!--content-start-->
desired html
<!--content-end-->
so I use pregmatch, right?
preg_match("/<!--content-start-->(.*)<!--content-end-->/i", $rss, $content);
but it wont work. Maybe a problem with the REGEX?
Thank you.
php preg-match
edited Nov 23 '18 at 4:47
miken32
24.9k95173
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
I want to convert into a string the html contained between these comments
<!--content-start-->
desired html
<!--content-end-->
so I use pregmatch, right?
preg_match("/<!--content-start-->(.*)<!--content-end-->/i", $rss, $content);
but it wont work. Maybe a problem with the REGEX?
Thank you.
php preg-match
php preg-match
edited Nov 23 '18 at 4:47
miken32
24.9k95173
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
edited Nov 23 '18 at 4:47
miken32
24.9k95173
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
edited Nov 23 '18 at 4:47
miken32
24.9k95173
edited Nov 23 '18 at 4:47
miken32
24.9k95173
edited Nov 23 '18 at 4:47
miken32
24.9k95173
24.9k95173
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
asked Nov 23 '18 at 3:58
Cain NukeCain Nuke
65611335
65611335
No, you don't use regular expressions to parse HTML. You use an HTML parser!
– miken32
Nov 23 '18 at 4:09
for example please?
– Cain Nuke
Nov 23 '18 at 4:11
@miken32 Although, arguably, they aren't "parsing HTML". They are simply extracting one block of text between two unique tokens (regardless of content-type). Using an HTML parser in this particular example (a simple one-off pattern matching exercise) is overkill IMO. (Only a small tweak to the OPs regex is required.)
– MrWhite
Dec 1 '18 at 1:28
add a comment |
No, you don't use regular expressions to parse HTML. You use an HTML parser!
– miken32
Nov 23 '18 at 4:09
for example please?
– Cain Nuke
Nov 23 '18 at 4:11
@miken32 Although, arguably, they aren't "parsing HTML". They are simply extracting one block of text between two unique tokens (regardless of content-type). Using an HTML parser in this particular example (a simple one-off pattern matching exercise) is overkill IMO. (Only a small tweak to the OPs regex is required.)
– MrWhite
Dec 1 '18 at 1:28
No, you don't use regular expressions to parse HTML. You use an HTML parser!
– miken32
Nov 23 '18 at 4:09
No, you don't use regular expressions to parse HTML. You use an HTML parser!
– miken32
Nov 23 '18 at 4:09
for example please?
– Cain Nuke
Nov 23 '18 at 4:11
for example please?
– Cain Nuke
Nov 23 '18 at 4:11
@miken32 Although, arguably, they aren't "parsing HTML". They are simply extracting one block of text between two unique tokens (regardless of content-type). Using an HTML parser in this particular example (a simple one-off pattern matching exercise) is overkill IMO. (Only a small tweak to the OPs regex is required.)
– MrWhite
Dec 1 '18 at 1:28
@miken32 Although, arguably, they aren't "parsing HTML". They are simply extracting one block of text between two unique tokens (regardless of content-type). Using an HTML parser in this particular example (a simple one-off pattern matching exercise) is overkill IMO. (Only a small tweak to the OPs regex is required.)
– MrWhite
Dec 1 '18 at 1:28
add a comment |
2 Answers
2
active
oldest
votes
1
Perhaps a /s modifier will help. Check the documentation:
s (PCRE_DOTALL)
If this modifier is set, a dot metacharacter in the pattern matches all characters,
including newlines. Without it, newlines are excluded. This modifier is equivalent to
Perl's /s modifier. A negative class such as [^a] always matches a newline character,
independent of the setting of this modifier.
answered Nov 23 '18 at 4:08
drmaddrmad
1567
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
add a comment |
1
Something like this should work. The XPath query looks for a comment containing "content-start" and then returns the sibling nodes following it. We loop through until we find the closing comment.
$html = <<< HTML
<!--content-start-->
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
<!--content-end-->
<p>Not returning this</p>
HTML;
$return = "";
$dom = new DomDocument;
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);
$xpath = new DomXpath($dom);
$siblings = $xpath->query("//comment()[.='content-start']/following-sibling::node()");
foreach ($siblings as $node) {
if ($node instanceof DOMComment && $node->textContent === "content-end") {
break;
}
$return .= $dom->saveHTML($node) . "n";
}
echo $return;
Output:
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
|
show 8 more comments
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
Perhaps a /s modifier will help. Check the documentation:
s (PCRE_DOTALL)
If this modifier is set, a dot metacharacter in the pattern matches all characters,
including newlines. Without it, newlines are excluded. This modifier is equivalent to
Perl's /s modifier. A negative class such as [^a] always matches a newline character,
independent of the setting of this modifier.
answered Nov 23 '18 at 4:08
drmaddrmad
1567
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
add a comment |
1
Perhaps a /s modifier will help. Check the documentation:
s (PCRE_DOTALL)
If this modifier is set, a dot metacharacter in the pattern matches all characters,
including newlines. Without it, newlines are excluded. This modifier is equivalent to
Perl's /s modifier. A negative class such as [^a] always matches a newline character,
independent of the setting of this modifier.
answered Nov 23 '18 at 4:08
drmaddrmad
1567
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
add a comment |
1
1
1
Perhaps a /s modifier will help. Check the documentation:
s (PCRE_DOTALL)
If this modifier is set, a dot metacharacter in the pattern matches all characters,
including newlines. Without it, newlines are excluded. This modifier is equivalent to
Perl's /s modifier. A negative class such as [^a] always matches a newline character,
independent of the setting of this modifier.
answered Nov 23 '18 at 4:08
drmaddrmad
1567
Perhaps a /s modifier will help. Check the documentation:
s (PCRE_DOTALL)
If this modifier is set, a dot metacharacter in the pattern matches all characters,
including newlines. Without it, newlines are excluded. This modifier is equivalent to
Perl's /s modifier. A negative class such as [^a] always matches a newline character,
independent of the setting of this modifier.
answered Nov 23 '18 at 4:08
drmaddrmad
1567
answered Nov 23 '18 at 4:08
drmaddrmad
1567
answered Nov 23 '18 at 4:08
drmaddrmad
1567
answered Nov 23 '18 at 4:08
drmaddrmad
1567
1567
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
add a comment |
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
Yes, this is all that's required in the OPs example. Parsing the HTML (as mentioned in the other answer) is overkill IMO - for what is really just a simple pattern matching exercise.
– MrWhite
Dec 1 '18 at 1:19
add a comment |
1
Something like this should work. The XPath query looks for a comment containing "content-start" and then returns the sibling nodes following it. We loop through until we find the closing comment.
$html = <<< HTML
<!--content-start-->
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
<!--content-end-->
<p>Not returning this</p>
HTML;
$return = "";
$dom = new DomDocument;
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);
$xpath = new DomXpath($dom);
$siblings = $xpath->query("//comment()[.='content-start']/following-sibling::node()");
foreach ($siblings as $node) {
if ($node instanceof DOMComment && $node->textContent === "content-end") {
break;
}
$return .= $dom->saveHTML($node) . "n";
}
echo $return;
Output:
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
|
show 8 more comments
1
Something like this should work. The XPath query looks for a comment containing "content-start" and then returns the sibling nodes following it. We loop through until we find the closing comment.
$html = <<< HTML
<!--content-start-->
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
<!--content-end-->
<p>Not returning this</p>
HTML;
$return = "";
$dom = new DomDocument;
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);
$xpath = new DomXpath($dom);
$siblings = $xpath->query("//comment()[.='content-start']/following-sibling::node()");
foreach ($siblings as $node) {
if ($node instanceof DOMComment && $node->textContent === "content-end") {
break;
}
$return .= $dom->saveHTML($node) . "n";
}
echo $return;
Output:
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
|
show 8 more comments
1
1
1
Something like this should work. The XPath query looks for a comment containing "content-start" and then returns the sibling nodes following it. We loop through until we find the closing comment.
$html = <<< HTML
<!--content-start-->
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
<!--content-end-->
<p>Not returning this</p>
HTML;
$return = "";
$dom = new DomDocument;
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);
$xpath = new DomXpath($dom);
$siblings = $xpath->query("//comment()[.='content-start']/following-sibling::node()");
foreach ($siblings as $node) {
if ($node instanceof DOMComment && $node->textContent === "content-end") {
break;
}
$return .= $dom->saveHTML($node) . "n";
}
echo $return;
Output:
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
Something like this should work. The XPath query looks for a comment containing "content-start" and then returns the sibling nodes following it. We loop through until we find the closing comment.
$html = <<< HTML
<!--content-start-->
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
<!--content-end-->
<p>Not returning this</p>
HTML;
$return = "";
$dom = new DomDocument;
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);
$xpath = new DomXpath($dom);
$siblings = $xpath->query("//comment()[.='content-start']/following-sibling::node()");
foreach ($siblings as $node) {
if ($node instanceof DOMComment && $node->textContent === "content-end") {
break;
}
$return .= $dom->saveHTML($node) . "n";
}
echo $return;
Output:
<p>Here is my <i>desired html</i></p>
<!-- a comment -->
<div class="foo">Here is more</div>
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
edited Nov 23 '18 at 4:50
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
answered Nov 23 '18 at 4:37
miken32miken32
24.9k95173
24.9k95173
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
|
show 8 more comments
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
will this work if the html is from another website?
– Cain Nuke
Nov 23 '18 at 17:17
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
It's HTML, it doesn't matter where it's from.
– miken32
Nov 23 '18 at 17:18
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
great, I will try it. Thanks
– Cain Nuke
Nov 23 '18 at 17:20
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
sorry but I got these warnings: DOMDocument::loadHTML() expects exactly 1 parameter, 2 given Warning: DOMXPath::query() [domxpath.query]: Invalid or inclomplete context Warning: Invalid argument supplied for foreach()
– Cain Nuke
Nov 23 '18 at 17:30
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
Are you kidding me? PHP 5.3 has been EOL for 5 years now. You gotta upgrade!
– miken32
Nov 23 '18 at 17:31
|
show 8 more comments
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No, you don't use regular expressions to parse HTML. You use an HTML parser!
– miken32
Nov 23 '18 at 4:09
for example please?
– Cain Nuke
Nov 23 '18 at 4:11
@miken32 Although, arguably, they aren't "parsing HTML". They are simply extracting one block of text between two unique tokens (regardless of content-type). Using an HTML parser in this particular example (a simple one-off pattern matching exercise) is overkill IMO. (Only a small tweak to the OPs regex is required.)
– MrWhite
Dec 1 '18 at 1:28