利用post_title获取媒体图像文件

Question

我所有的媒体文件图像都被命名为‘图标_0001’、‘图标_0002’、‘图标_0003’、‘插图_0001’、‘插图_0002’、'illustration_0003‘等等，以及其他图像文件，如’SummonC名流‘、’Stun散粉‘等等。我已经通过wordpress管理ui和var_dumping附件检查了这一点。

现在，我试图使用以下代码检索媒体文件ID：

$post_name = 'illustration_30004';
$args = array(
    'post_type' => 'attachment',
    'post_status' => 'inherit',
    'post_title' => trim( $post_name ),
    'post_mime_type' => 'image/png',
    'posts_per_page' => -1
    );


$wp_query = new WP_Query( $args );

foreach( $wp_query->posts as $image) {
    var_dump( $image );
    echo '<hr/>';

}

是的，这只是一个使用post_type = attachment的简单查询代码。但是，无论我给$post_name取什么名称，查询都会显示媒体库中的所有图像文件，如下所示：

object(WP_Post)#1386 (24) { ["ID"]=> int(40735) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2014-10-08 10:22:04" ["post_date_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content"]=> string(0) "" ["post_title"]=> string(11) "SummonClear" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "inherit" ["comment_status"]=> string(4) "open" ["ping_status"]=> string(4) "open" ["post_password"]=> string(0) "" ["post_name"]=> string(13) "summonclear-3" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2014-10-08 10:22:04" ["post_modified_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(104) "http://101.251.201.22/digital-opal-mu/elin-expedition/wp-content/uploads/sites/2/assets/SummonClear2.png" ["menu_order"]=> int(0) ["post_type"]=> string(10) "attachment" ["post_mime_type"]=> string(9) "image/png" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" }

object(WP_Post)#1387 (24) { ["ID"]=> int(40734) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2014-10-08 10:22:04" ["post_date_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content"]=> string(0) "" ["post_title"]=> string(11) "SummonChick" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "inherit" ["comment_status"]=> string(4) "open" ["ping_status"]=> string(4) "open" ["post_password"]=> string(0) "" ["post_name"]=> string(13) "summonchick-3" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2014-10-08 10:22:04" ["post_modified_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(104) "http://101.251.201.22/digital-opal-mu/elin-expedition/wp-content/uploads/sites/2/assets/SummonChick2.png" ["menu_order"]=> int(0) ["post_type"]=> string(10) "attachment" ["post_mime_type"]=> string(9) "image/png" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" }

object(WP_Post)#1388 (24) { ["ID"]=> int(40733) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2014-10-08 10:22:04" ["post_date_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content"]=> string(0) "" ["post_title"]=> string(10) "StunPowder" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "inherit" ["comment_status"]=> string(4) "open" ["ping_status"]=> string(4) "open" ["post_password"]=> string(0) "" ["post_name"]=> string(12) "stunpowder-3" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2014-10-08 10:22:04" ["post_modified_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(103) "http://101.251.201.22/digital-opal-mu/elin-expedition/wp-content/uploads/sites/2/assets/StunPowder2.png" ["menu_order"]=> int(0) ["post_type"]=> string(10) "attachment" ["post_mime_type"]=> string(9) "image/png" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" }

object(WP_Post)#1389 (24) { ["ID"]=> int(40732) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2014-10-08 10:22:04" ["post_date_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content"]=> string(0) "" ["post_title"]=> string(5) "Stomp" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "inherit" ["comment_status"]=> string(4) "open" ["ping_status"]=> string(4) "open" ["post_password"]=> string(0) "" ["post_name"]=> string(7) "stomp-3" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2014-10-08 10:22:04" ["post_modified_gmt"]=> string(19) "2014-10-08 10:22:04" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(98) "http://101.251.201.22/digital-opal-mu/elin-expedition/wp-content/uploads/sites/2/assets/Stomp2.png" ["menu_order"]=> int(0) ["post_type"]=> string(10) "attachment" ["post_mime_type"]=> string(9) "image/png" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" }

...and 900+ more of these.

我知道我有一个名为“illustration_30004”的媒体文件，因为下面的结果包含在900+结果中。

object(WP_Post)#1871 (24) { ["ID"]=> int(40973) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2014-10-07 03:38:14" ["post_date_gmt"]=> string(19) "2014-10-07 03:38:14" ["post_content"]=> string(0) "" ["post_title"]=> string(18) "illustration_30004" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "inherit" ["comment_status"]=> string(4) "open" ["ping_status"]=> string(4) "open" ["post_password"]=> string(0) "" ["post_name"]=> string(18) "illustration_30004" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2014-10-07 03:38:14" ["post_modified_gmt"]=> string(19) "2014-10-07 03:38:14" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(110) "http://101.251.201.22/digital-opal-mu/elin-expedition/wp-content/uploads/sites/2/assets/illustration_30004.png" ["menu_order"]=> int(0) ["post_type"]=> string(10) "attachment" ["post_mime_type"]=> string(9) "image/png" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" }

所以，问题is...what在我的查询中是错误的，为什么我要获取所有的媒体文件而不是我想要的post_title？

补充:还有一件事，虽然我不确定这是否相关-这些媒体文件被上传到wordpress，但还没有附加到任何帖子。

Answer 1

多亏了Bizzkit的建议，我才知道出了什么问题。我应该使用'name‘而不是'post_title'，如下所示：

/**
 * Get media image file by name
 */
function get_media_image( $image_name ) {

    $post_name = trim( $image_name );

    $args = array(
        'post_type' => 'attachment',
        'post_status' => 'inherit',
        'name' => $post_name,
        'post_mime_type' => 'image/png',
        'posts_per_page' => -1
        );


    $wp_query = new WP_Query( $args );
    $images = array();

    foreach( $wp_query->posts as $image) {
        $images[] = $image->guid;
    }

    if( sizeof( $images ) == 1 ) {
        return $images[0];
    }

}

Answer 2

我不认为'post_title‘是一个有效的论点。参数

你可以试试：

“‘name”可以通过它们的片段“p”查找帖子，然后按ID查找它们，以执行关键字搜索。