html - PHP & DOM: How can I search through a single element using class names? -
i'm trying search through series of html elements , extract text in divs (based on class name), seem unable search through single element, nodes.
<html> <div class=parent> <div videoid=1></div> <div class=inner>testing <div class=title>test</div> <div class=date>test</div> <div class=time>test</div> </div> </div> <div class=parent> <div videoid=2></div> <div class=inner>testing <div class=title>test</div> <div class=date>test</div> <div class=time>test</div> </div> </div> <div class=parent> <div videoid=3></div> <div class=inner>testing <div class=title>test</div> <div class=date>test</div> <div class=time>test</div> </div> </div> </html> $url = new domdocument; $url->loadhtmlfile("text.html"); $finder = new domxpath($url); $classname="parent"; $nodes = $finder->query("//*[contains(concat(' ', normalize-space(@class), ' '), ' $classname ')]"); $count = 0; foreach($nodes $element) { //extracts each instance of parent div it's own element. //within parent div extract value videoid attribute within following child div belonging following attribute: videoid; //within parent div extract text within following child div belonging following class: title; //within parent div extract text within following child div belonging following class: date; //within parent div extract text within following child div belonging following class: time; } while there 1 instance of each of child elements within each parent, may in order in parent div, , own children. i'm looking sort of recursive search think?
from parent (elements) got, can continue searching values needed. ->query(expression, context node) has second parameter wherein can put context node need search.
rough example:
// each found parent node foreach($parents $parent) { $id = $finder->query('./div[@class="id"]', $parent)->item(0)->nodevalue; // create query ^ using found parent context node } so in applying those:
$finder = new domxpath($url); $classname = "parent"; $parents = $finder->query("//div[@class='$classname']"); if($parents->length > 0) { foreach($parents $parent) { $id = $finder->query('./div[@class="id"]', $parent)->item(0)->nodevalue; $title = $id = $finder->query('./div[@class="inner"]/div[@class="title"]', $parent)->item(0)->nodevalue; $date = $id = $finder->query('./div[@class="inner"]/div[@class="date"]', $parent)->item(0)->nodevalue; $time = $id = $finder->query('./div[@class="inner"]/div[@class="time"]', $parent)->item(0)->nodevalue; echo $id, '<br/>', $title, '<br/>', $date, '<br/>', $time, '<hr/>'; } } thats case when expect structure always. can search inside parent query , first 1 found, if markup flexible:
foreach($parents $parent) { $title = $finder->evaluate('string(.//*[@class="title"][1])', $parent); echo $title, '<br/>'; }
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