如何回显来自WordPress帖子的图像URL，这些URL相对地位于帖子中

我有个问题。

我使用以下代码输出wordpress帖子的图像URL。图像URL与；附加图像“；一篇wordpress文章，而不是文章中实际使用的内容。

如果您在2年前向帖子中添加了图像，但当前不再使用该图像，则旧的未使用图像Url仍将通过代码输出。我想避免这种情况。

我需要做些什么来调整代码，以便只输出那些真正在文章源代码中或在文章中实际使用的图像URL？也可以是附加到其他wordpress帖子的图像。

<?php
if( is_single() ) {
    global $post;
    $args = array( \'post_type\' => \'attachment\', \'numberposts\' => -1, \'post_mime_type\' => \'image\', \'post_status\' => null, \'post_parent\' => $post->ID ); 
    $attachments = get_posts($args);
    if ($attachments) {
            foreach ( $attachments as $attachment ) {
                    $img_title = $attachment->post_excerpt;
                    $metadata = wp_get_attachment_metadata($attachment->ID);
                    $width = $metadata[\'width\'];
                    $height = $metadata[\'height\'];
                    echo \'<meta property="og:image" content="\'.$attachment->guid.\'"/>\';
                    echo \'<meta property="og:image:type" content="image/jpeg" />\';
                    echo \'<meta property="og:image:width" content="\'.$width.\'"/>\';
                    echo \'<meta property="og:image:height" content="\'.$height.\'"/>\';
            }
    }
}
?>

if( is_single() ) { global $post; // Match the image URLs inside the post content $pattern = \'/<img.*src="([^"]+)"[^>]*>/\'; $matches = []; preg_match_all( $pattern, $post->post_content, $matches ); // Start looping if there are matches foreach ( $matches[1] as $url ) { // Remove the size portion from image URL to get the full size URL $url = preg_replace( \'/(\\-[0-9]+x[0-9]+)(.*)$/i\', "$2", $url ); // calculate the image dimensions $image_dimensions = getimagesize($url); // Do whatever you want here... } }

if( is_single() ) { global $post; // Match the image URLs inside the post content $pattern = \'/<img.*src="([^"]+)"[^>]*>/\'; $matches = []; preg_match_all( $pattern, $post->post_content, $matches ); // Start looping if there are matches foreach ( $matches[1] as $url ) { // Remove the size portion from image URL to get the full size URL $url = preg_replace( \'/(\\-[0-9]+x[0-9]+)(.*)$/i\', "$2", $url ); // Convert the image URL to the corresponding post ID $attachment_id = attachment_url_to_postid( $url ); // Get the WP_Post object for the attachment $attachment = get_post( $attachment_id ); // Do whatever you want here... } }

if( is_single() ) { global $post; // Match the attachments IDs inside the post content $pattern = \'/<img.+wp\\-image\\-([0-9]+)[^>]+>/\'; $matches = []; preg_match_all( $pattern, $post->post_content, $matches ); // Start looping in the found matches foreach ( $matches[1] as $attachment_id ) { // Get the WP_Post object for the attachment $attachment = get_post( $attachment_id ); // Do whatever you want here... } }

<?php if( is_single() ) { global $post; $pattern = \'/<img.*src="([^"]+)"[^>]*>/\'; $matches = []; preg_match_all( $pattern, $post->post_content, $matches ); foreach ( $matches[1] as $url ) { $clean_url = preg_replace(\'/<img .*src=["|\\\']([^"|\\\']+)/i\', "", $url ); $https_url = str_replace("http:", "https:", $clean_url); list($width, $height) = getimagesize($https_url); echo \'<meta property="og:image" content="\'.$https_url.\'"/>\'; echo \'<meta property="og:image:type" content="image/jpeg" />\'; echo \'<meta property="og:image:width" content="\'.$width.\'"/>\'; echo \'<meta property="og:image:height" content="\'.$height.\'"/>\'; } } ?>

Responsive header images

我刚刚建立了一个WordPress网站，但我的其他WordPress网站都有同样的问题：标题图像没有响应。不管屏幕有多小，它都有2000像素宽。我尝试了各种修复，从添加自定义CSS到安装特殊插件，但都没有成功。我最终通过选择不显示标题图像，然后打开文件标题来修复它。并手动在标题上方插入指向图像的链接。它工作得很好，但有两个注意事项。网站标题（在h1标签中）现在位于标题图像下方，而不是上方。此外，此修复程序仅适用于主页。我还没有弄清楚我要为其他页面做什么，除非我选择只在主页上使用标题图像。所以在我继续之前，

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Responsive header images