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How do I extract values with pregmatch if located within <UL> tags

Posted on 2015-02-24
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Last Modified: 2015-02-24
How do I correctly structure this pregmatch to get each subcategory name which is only located between <ul> tags.
(I do not want values that are not located within <ul> tags.  Is this possible?)


<ul>  
<li>
<a href="/ammo-case" title="">Case</a>
</li><li>
<a href="/ammo-pistol" title="">Pistol</a>
</li><li>
<a href="/ammo-rifle" title="">Rifle</a>
</li><li>
<a href="/ammo-shotgun" title="">Shotgun</a>
</li></ul>

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$statement = $conn->prepare('INSERT INTO SubCats (SubCatName) VALUES(:SubCatName)');

preg_match_all('%<li>\s*<a href=".*?" title="">(.*?)<\/a>\s*<\/li>%si',$buffer1,$matches1);
	
foreach($matches1[0] as $key=>$link){
	$params = array(':SubCatName'=>$matches1[1][$key]);
	$statement->execute($params);	
}		

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Question by:lawrence_dev
3 Comments
 
LVL 34

Assisted Solution

by:gr8gonzo
gr8gonzo earned 150 total points
ID: 40628552
Check out  my article on using Simple HTML DOM to parse HTML and get to values.

http://www.experts-exchange.com/Programming/Languages/Scripting/PHP/A_10277-HTML-Manipulation-Made-Easy.html

Using regex with HTML can be a fragile thing. A simple HTML change (any change in structure, spacing, attributes, etc...) can break a working setup. Using a DOM parser will turn the page into something that is easy to search and should work fairly consistently, even if the page goes through some minor changes.
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LVL 35

Accepted Solution

by:
Terry Woods earned 350 total points
ID: 40629769
@gr8gonzo gives good advice. Here's a pattern anyway though if you choose to use it:
preg_match_all('%<li>\s*<a href=".*?" title="">(.*?)<\/a>\s*<\/li>(?=((?!<ul[>\s]).)*</ul>)%si',$buffer1,$matches1);

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Author Closing Comment

by:lawrence_dev
ID: 40629774
Thanks Terry and Gr8Gonzo!
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