在一个复杂的嵌套数组中拉出一个PHP变量(从Drupal视图中）

可能重复：
能够在print_r((中查看变量'；s输出，但不确定如何在代码中访问它

我有一个叫做$data的复杂数组变量。我需要提取一个非常隐蔽的值：[field_website]中的[url]。以下是$data变量的原始print_r()输出：

stdClass Object ( [node_title] => CMI2 [nid] => 3 [field_data_field_website_node_entity_type] => node [field_data_field_blog_node_entity_type] => node [field_data_field_rss_node_entity_type] => node [field_data_field_twitter_node_entity_type] => node [field_data_field_yammer_node_entity_type] => node [field_data_field_facebook_node_entity_type] => node [field_data_field_flickr_node_entity_type] => node [field_data_field_youtube_node_entity_type] => node [_field_data] => Array ( [nid] => Array ( [entity_type] => node [entity] => stdClass Object ( [vid] => 3 [uid] => 1 [title] => CMI2 [log] => [status] => 1 [comment] => 1 [promote] => 0 [sticky] => 0 [nid] => 3 [type] => social_source [language] => und [created] => 1356040541 [changed] => 1356040541 [tnid] => 0 [translate] => 0 [revision_timestamp] => 1356040541 [revision_uid] => 1 [field_website] => Array ( [und] => Array ( [0] => Array ( [url] => http://cmi2.yale.edu [title] => [attributes] => Array ( ) ) ) ) [field_blog] => Array ( ) [field_rss] => Array ( ) [field_twitter] => Array ( [und] => Array ( [0] => Array ( [url] => http://twitter.com/yalecmi2 [title] => [attributes] => Array ( ) ) ) ) [field_facebook] => Array ( ) [field_youtube] => Array ( ) [field_flickr] => Array ( ) [field_yammer] => Array ( ) [rdf_mapping] => Array ( [rdftype] => Array ( [0] => sioc:Item [1] => foaf:Document ) [title] => Array ( [predicates] => Array ( [0] => dc:title ) ) [created] => Array ( [predicates] => Array ( [0] => dc:date [1] => dc:created ) [datatype] => xsd:dateTime [callback] => date_iso8601 ) [changed] => Array ( [predicates] => Array ( [0] => dc:modified ) [datatype] => xsd:dateTime [callback] => date_iso8601 ) [body] => Array ( [predicates] => Array ( [0] => content:encoded ) ) [uid] => Array ( [predicates] => Array ( [0] => sioc:has_creator ) [type] => rel ) [name] => Array ( [predicates] => Array ( [0] => foaf:name ) ) [comment_count] => Array ( [predicates] => Array ( [0] => sioc:num_replies ) [datatype] => xsd:integer ) [last_activity] => Array ( [predicates] => Array ( [0] => sioc:last_activity_date ) [datatype] => xsd:dateTime [callback] => date_iso8601 ) ) [cid] => 0 [last_comment_timestamp] => 1356040541 [last_comment_name] => [last_comment_uid] => 1 [comment_count] => 0 [name] => admin [picture] => 0 [data] => b:0; ) ) ) [field_field_website] => Array ( [0] => Array ( [rendered] => Array ( [#markup] => http://cmi2.yale.edu [#access] => 1 ) [raw] => Array ( [url] => http://cmi2.yale.edu [title] => http://cmi2.yale.edu [attributes] => Array ( ) [display_url] => http://cmi2.yale.edu ) ) ) [field_field_blog] => Array ( ) [field_field_rss] => Array ( ) [field_field_twitter] => Array ( [0] => Array ( [rendered] => Array ( [#markup] => http://twitter.com/yalecmi2 [#access] => 1 ) [raw] => Array ( [url] => http://twitter.com/yalecmi2 [title] => http://twitter.com/yalecmi2 [attributes] => Array ( ) [display_url] => http://twitter.com/yalecmi2 ) ) ) [field_field_yammer] => Array ( ) [field_field_facebook] => Array ( ) [field_field_flickr] => Array ( ) [field_field_youtube] => Array ( ) )

(很抱歉！(

我到底该如何提取[url]变量？！理想情况下，我只想将一个值分配给另一个变量，或者直接打印出来。

如果有帮助的话，这是一个带有Views PHP模块的Drupal 7视图。

谢谢！