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Dom\Element::getElementsByClassName — Returns a collection of descendant elements that have the given classes
Returns a Dom\HTMLCollection of the descendants of
this element, in document order, whose class attribute
contains all the classes given in classNames.
The element itself is never part of the collection.
classNamesOne or more class names separated by ASCII whitespace. An element only matches if it has every one of these classes, in any order.
Class names are compared case-sensitively, unless the document is in quirks mode, in which case the comparison is ASCII case-insensitive.
Returns a Dom\HTMLCollection of the matching
elements. The collection is empty if no element matches, or if
classNames contains no class name, for example when
it is an empty string or only whitespace.
Throws a ValueError if
classNames contains a null byte.
Приклад #1 Dom\Element::getElementsByClassName() example
<?php
$dom = Dom\HTMLDocument::createFromString(
'<!DOCTYPE html><body><div id="list">'
. '<p class="item new">One</p>'
. '<p class="item">Two</p>'
. '<p class="Item">Three</p>'
. '</div></body>',
LIBXML_NOERROR
);
$list = $dom->getElementById('list');
foreach ($list->getElementsByClassName('new item') as $element) {
echo $element->textContent, "\n";
}
echo $list->getElementsByClassName('item')->length, "\n";Поданий вище приклад виведе:
One 2