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@ 2019-06-23T14:34:15Z

<?php

$content = '<figure class="image image-style-align-left"><img src="https://placekitten.com/g/200/300"></figure><p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</p>'; 

      $dom = new DOMDocument();
        libxml_use_internal_errors(true);

        // this needs to be encoded otherwise special characters get messed up.
        $domPart = mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8");
        $dom->loadHTML($domPart, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
        
        $domFigures = $dom->getElementsByTagName('figure');

        foreach ($domFigures as $domFigure) {

            $img = $domFigure->getElementsByTagName('img')[0];

            if ($img) {
                    $img->setAttribute('src', "https://placekitten.com/g/400/500");
            }

        }

$result = $dom->saveHTML();

print_r($result);

Output for git.master, git.master_jit, rfc.property-hooks: Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead in /in/AgIjB on line 9 <figure class="image image-style-align-left"><img src="https://placekitten.com/g/400/500"><p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</p></figure>

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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38.97 ms | 406 KiB | 5 Q