{"id":253,"date":"2022-06-22T00:12:57","date_gmt":"2022-06-21T16:12:57","guid":{"rendered":"https:\/\/www.xyn4.cn\/?p=253"},"modified":"2022-06-22T00:12:58","modified_gmt":"2022-06-21T16:12:58","slug":"wp-%e8%b0%83%e5%8f%96%e5%8d%95%e9%a1%b5%e9%9d%a2%e7%9a%84%e7%89%b9%e8%89%b2%e5%9b%be%e7%89%87","status":"publish","type":"post","link":"https:\/\/www.xyn4.cn\/?p=253","title":{"rendered":"wp \u8c03\u53d6\u5355\u9875\u9762\u7684\u7279\u8272\u56fe\u7247"},"content":{"rendered":"\n

File:\u00a0wp-includes\/media.php<\/a><\/p>\n\n\n\n

function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) {\n    \/\/ Get a thumbnail or intermediate image if there is one.\n    $image = image_downsize( $attachment_id, $size );\n    if ( ! $image ) {\n        $src = false;\n \n        if ( $icon ) {\n            $src = wp_mime_type_icon( $attachment_id );\n \n            if ( $src ) {\n                \/** This filter is documented in wp-includes\/post.php *\/\n                $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '\/images\/media' );\n \n                $src_file               = $icon_dir . '\/' . wp_basename( $src );\n                list( $width, $height ) = wp_getimagesize( $src_file );\n            }\n        }\n \n        if ( $src && $width && $height ) {\n            $image = array( $src, $width, $height, false );\n        }\n    }\n    \/**\n     * Filters the attachment image source result.\n     *\n     * @since 4.3.0\n     *\n     * @param array|false  $image         {\n     *     Array of image data, or boolean false if no image is available.\n     *\n     *     @type string $0 Image source URL.\n     *     @type int    $1 Image width in pixels.\n     *     @type int    $2 Image height in pixels.\n     *     @type bool   $3 Whether the image is a resized image.\n     * }\n     * @param int          $attachment_id Image attachment ID.\n     * @param string|int[] $size          Requested image size. Can be any registered image size name, or\n     *                                    an array of width and height values in pixels (in that order).\n     * @param bool         $icon          Whether the image should be treated as an icon.\n     *\/\n    return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon );\n}\n\n\u9875\u9762\u4e0a\u8c03\u7528\n<?php \n\t$url = wp_get_attachment_url( get_post_thumbnail_id(102) );\n\techo $url\n?><\/code><\/pre>\n