How to extract img src and alt from html using PHP? - GeeksforGeeks

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// error_reporting(0);    function crawl_page($url) {      $dom = new DOMDocument('1.0');          // Loading HTML content in $dom    @$dom->loadHTMLFile($url);          // Selecting all image i.e. img tag object    $anchors = $dom -> getElementsByTagName('img');          // Extracting attribute from each object    foreach ($anchors as $element) {                  // Extracting value of src attribute of        // the current image object        $src = $element -> getAttribute('src');                  // Extracting value of alt attribute of        // the current image object        $alt = $element -> getAttribute('alt');                  // Extracting value of height attribute        // of the current image object        $height = $element -> getAttribute('height');                  // Extracting value of width attribute of        // the current image object        $width = $element -> getAttribute('width');                  // Given Output as image with extracted attribute,        // you can print value of those attributes also        echo '<img src="'.$src.'" alt="'.$alt.'" height="'                . $height.'" width="'.$width.'"/>';    }}    crawl_page("https://www.google.com/search?q=geeksforgeeks&tbm=isch");   ?>
Output:
Example 2: This example displays the attribute of an image object.
<?php// error_reporting(0);    function crawl_page($url) {      $dom = new DOMDocument('1.0');          // Loading HTML content in $dom    @$dom->loadHTMLFile($url);          // Selecting all image i.e. img tag object    $anchors = $dom -> getElementsByTagName('img');          // Extracting attribute from each object    foreach ($anchors as $element) {                  // Extracting value of src attribute of        // the current image object        $src = $element -> getAttribute('src');                  // Extracting value of alt attribute of        // the current image object        $alt = $element -> getAttribute('alt');                  // Extracting value of height attribute        // of the current image object        $height = $element -> getAttribute('height');                  // Extracting value of width attribute of        // the current image object        $width = $element -> getAttribute('width');                  // Display Output as value of those attributes        echo 'src='.$src.'<br> alt='.$alt.'<br> height='                . $height.'<br> width='.$width.'<hr>';    }}    crawl_page("https://www.google.com/search?q=flowers&tbm=isch");   ?>
Output:
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