今天在做业务逻辑的过程中,需要在一个不确定的多维数组中删除某个特定的key,查了挺长时间加上自己的修改,终于满足了业务逻辑,该方法在修改后应该可以适用于很多地方,所以记录下来以备后用,我这里是一个多维数组,还是json_encode后的,主要目的是删除所有old_tags_id数组中有tag_id=264的数据,顺便要删除相应的tag_name,还有 addtag要减1,,代码如下:
先放递归函数,当然这里是核心,很多人看了这个应该就已经知道如何使用了.
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public function dealMenuTagDelete(& $menuData , $tag_id ) { if (! is_array ( $menuData )) { return false; } foreach ( $menuData as $key => $val ) { if ( $key === 'old_tags_id' ) { foreach ( $val as $tagKey => $tagVaule ) { if ( $tagVaule == $tag_id ) { unset( $menuData [ 'old_tags_id' ][ $tagKey ]); unset( $menuData [ 'old_tags' ][ $tagKey ]); $menuData [ 'addtag' ]--; } } } if ( is_array ( $val )) { self::dealMenuTagDelete( $menuData [ $key ], $tag_id ); } } return $menuData ; } |
维数组长这样,还是jeson_encode后的格式:
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[ { "typ" : "res_ejcd" , "tit" : "message1" , "data" : "1@2@3" , "subdata" : { "zizicd1" : { "typ" : "res_wb" , "data" : "qqqq" , "addtag" : 1, "old_tags" : [ "\"campaign综合分析\"" , "test add a tag" ], "old_tags_id" : [ "264" , "17" ], "new_tags_id" : [], "tit" : "1" }, "zizicd2" : { "typ" : "res_wb" , "data" : "wwww" , "addtag" : 1, "old_tags" : [ "test add a tag" ], "old_tags_id" : [ "17" ], "new_tags_id" : [], "tit" : "2" }, "zizicd3" : { "typ" : "res_wb" , "data" : "ddd" , "addtag" : 1, "old_tags" : [], "old_tags_id" : [], "new_tags_id" : [ "new_tag1" ], "tit" : "3" } }, "addtag" : 0, "old_tags" : [], "old_tags_id" : [], "new_tags_id" : [] }, { "typ" : "res_tw" , "tit" : "Post" , "data" : "2121" , "subdata" : null, "addtag" : 1, "old_tags" : [ "“519引号阅读user message图文”" ], "old_tags_id" : [ "183" ], "new_tags_id" : [] }, { "typ" : "res_wb" , "tit" : "Today1" , "data" : "12312321" , "subdata" : null, "addtag" : 1, "old_tags" : [], "old_tags_id" : [], "dynamicdata" : "{\"default\":{\"message_type\":\"1\",\"val\":\"dynamic\"},\"segementation\":[{\"segId\":\"451\",\"message_type\":\"1\",\"val\":\"你属于conversation 80这一组\"},{\"segId\":\"450\",\"message_type\":\"1\",\"val\":\"poll-1212\\n有三个人,rainbow H T_T\"}]}" , "configId" : "2392" , "new_tags_id" : [ "new_tag2" ] } ] |
然后赋值,调用
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$tag_id = 264; $menuData = json_decode( $data ,true); //这里第二个参数用true就会转化为数组了 self::dealMenuTagDelete( $menuData , $tag_id ); print_r( $menuData ); |
以上所述是小编给大家介绍的PHP递归删除多维数组中的某个值,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!