How to extract img src and alt from html using PHP?
Last Updated :
15 May, 2019
Extraction of image attributes like ‘src’, ‘alt’, ‘height’, ‘width’ etc from a HTML page using PHP. This task can be done using the following steps.
- Loading HTML content in a variable(DOM variable).
- Selecting each image in that document.
- Selecting attribute and save it’s content to a variable.
- Output as HTML img object or as plain values as required.
Example 1: This example displays the image object as output.
<?php
function crawl_page($url) {
$dom = new DOMDocument('1.0');
@$dom->loadHTMLFile($url);
$anchors = $dom -> getElementsByTagName('img');
foreach ($anchors as $element) {
$src = $element -> getAttribute('src');
$alt = $element -> getAttribute('alt');
$height = $element -> getAttribute('height');
$width = $element -> getAttribute('width');
echo '<img src="'.$src.'" alt="'.$alt.'" height="'
. $height.'" width="'.$width.'"/>';
}
}
?>
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Output:
Example 2: This example displays the attribute of an image object.
<?php
function crawl_page($url) {
$dom = new DOMDocument('1.0');
@$dom->loadHTMLFile($url);
$anchors = $dom -> getElementsByTagName('img');
foreach ($anchors as $element) {
$src = $element -> getAttribute('src');
$alt = $element -> getAttribute('alt');
$height = $element -> getAttribute('height');
$width = $element -> getAttribute('width');
echo 'src='.$src.'<br> alt='.$alt.'<br> height='
. $height.'<br> width='.$width.'<hr>';
}
}
?>
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Output:
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