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 $menuData ;
}
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维数组长这样,还是jeson_encode后的格式:
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[ {
"typ" : "res_ejcd" ,
"tit" : "message1" ,
"data" : "1@2@3" ,
"subdata" : {
"zizicd1" : {
"typ" : "res_wb" ,
"data" : "qqqq" ,
"addtag" : 1,
"old_tags" : [
"\"campaign综合分析\"" ,
"test add a tag"
],
"old_tags_id" : [
"264" ,
"17"
],
"new_tags_id" : [],
"tit" : "1"
},
"zizicd2" : {
"typ" : "res_wb" ,
"data" : "wwww" ,
"addtag" : 1,
"old_tags" : [
"test add a tag"
],
"old_tags_id" : [
"17"
],
"new_tags_id" : [],
"tit" : "2"
},
"zizicd3" : {
"typ" : "res_wb" ,
"data" : "ddd" ,
"addtag" : 1,
"old_tags" : [],
"old_tags_id" : [],
"new_tags_id" : [
"new_tag1"
],
"tit" : "3"
}
},
"addtag" : 0,
"old_tags" : [],
"old_tags_id" : [],
"new_tags_id" : []
},
{
"typ" : "res_tw" ,
"tit" : "Post" ,
"data" : "2121" ,
"subdata" : null,
"addtag" : 1,
"old_tags" : [
"“519引号阅读user message图文”"
],
"old_tags_id" : [
"183"
],
"new_tags_id" : []
},
{
"typ" : "res_wb" ,
"tit" : "Today1" ,
"data" : "12312321" ,
"subdata" : null,
"addtag" : 1,
"old_tags" : [],
"old_tags_id" : [],
"dynamicdata" : "{\"default\":{\"message_type\":\"1\",\"val\":\"dynamic\"},\"segementation\":[{\"segId\":\"451\",\"message_type\":\"1\",\"val\":\"你属于conversation 80这一组\"},{\"segId\":\"450\",\"message_type\":\"1\",\"val\":\"poll-1212\\n有三个人,rainbow H T_T\"}]}" ,
"configId" : "2392" ,
"new_tags_id" : [
"new_tag2"
]
}
]
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然后赋值,调用
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$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 );
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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!