抽圖片出來處理的方法 HTTP -> HTTPS

img_src_replace.php

<?php
//抽圖片出來處理 HTTP -> HTTPS
@$dom->loadHTML(mb_convert_encoding($content, 'HTML-ENTITIES', 'UTF-8'), LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$images = $dom->getElementsByTagName('img');
foreach ($images as $image) {
    $image->removeAttribute('alt');
    $image->removeAttribute('width');
    $image->removeAttribute('height');
    $image->removeAttribute('title');
    $image->removeAttribute('original');
    $image->removeAttribute('style');
    if (strpos($image->getAttribute('src'), 'http') === false) {
        $url_path = explode('//', $image->getAttribute('src'));
        $image->setAttribute('src', 'https://' . $url_path[1]);
    }
}
$content = $dom->saveHTML($dom->documentElement);