使用PHP从PodPress获取URI

我们使用podpress作为播客播放器，但我们希望提供在没有播放器的页面上下载文件的选项。因此，我试图找出如何从元数据中提取URI。

我是PHP新手，正在努力学习，所以我已经走到了这一步：

<?php  
    $custom_fields = get_post_custom(get_the_ID());
    $my_custom_field = $custom_fields[\'_podPressMedia\'];
    foreach ( $my_custom_field as $key => $value ){
        echo $key . " => " . $value . "<br />";
    }
?>

哪些输出

0 => a:1:{i:0;a:10:{s:3:"URI";s:85:"http://www.writingexcuses.com/wp-content/uploads/Writing_Excuses_8_1_Microcasting.mp3";s:5:"title";s:33:"Writing Excuses 8.1: Microcasting";s:4:"type";s:9:"audio_mp3";s:4:"size";i:12759440;s:8:"duration";s:5:"17:43";s:12:"previewImage";s:86:"http://legacieslost.com/writing/wp-content/plugins/podpress/images/vpreview_center.png";s:10:"dimensionW";i:0;s:10:"dimensionH";i:0;s:3:"rss";s:2:"on";s:4:"atom";s:2:"on";}}

因此，我可以在那里看到我想要的数据，我知道我需要创建另一个函数，该函数接受第一个结果并仅提取带有键URI的值，但我不知道该函数应该是什么样子。尽管我花了很多时间查看PHP手册上的这一页，但我还没有真正理解“数组思维”。

http://php.net/manual/en/control-structures.foreach.php

对施工有什么建议吗？

<?php //grabs the array with the meta fields of podPress for a particular post or page. $pp_array = get_post_meta(get_the_ID(), \'_podPressMedia\', true); $pp_array = $pp_array[0]; ?> <a href="<?php echo esc_attr($pp_array["URI"]) ?>" title="<?php echo esc_attr($pp_array["title"]);?>.mp3">Download</a>

$pp_array = get_post_meta(get_the_ID(), \'_podPressMedia\', true); var_dump($pp_array); RETURNS array(1) { [0]=> array(10) { ["URI"]=> string(85) "http://www.writingexcuses.com/wp-content/uploads/Writing_Excuses_8_1_Microcasting.mp3" ["title"]=> string(33) "Writing Excuses 8.1: Microcasting" ["type"]=> string(9) "audio_mp3" ["size"]=> int(12759440) ["duration"]=> string(5) "17:43" ["previewImage"]=> string(86) "http://legacieslost.com/writing/wp-content/plugins/podpress/images/vpreview_center.png" ["dimensionW"]=> int(0) ["dimensionH"]=> int(0) ["rss"]=> string(2) "on" ["atom"]=> string(2) "on" } } - See more at: http://www.writingexcuses.com/season-archives/izzy-detective/#sthash.jr9uR8xx.dpuf

$pp_array = $pp_array[0]; var_dump($pp_array); RETURNS array(10) { ["URI"]=> string(85) "http://www.writingexcuses.com/wp-content/uploads/Writing_Excuses_8_1_Microcasting.mp3" ["title"]=> string(33) "Writing Excuses 8.1: Microcasting" ["type"]=> string(9) "audio_mp3" ["size"]=> int(12759440) ["duration"]=> string(5) "17:43" ["previewImage"]=> string(86) "http://legacieslost.com/writing/wp-content/plugins/podpress/images/vpreview_center.png" ["dimensionW"]=> int(0) ["dimensionH"]=> int(0) ["rss"]=> string(2) "on" ["atom"]=> string(2) "on" } - See more at: http://www.writingexcuses.com/season-archives/izzy-detective/#sthash.iiQ43LEp.dpuf

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我可以用`.phtml`代替`.php`吗