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.
$val) {
if ($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:
PHP;">
[ {
"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","old_tags": [
"test add a tag"
],"old_tags_id": [
"17"
],"tit": "2"
},"zizicd3": {
"typ": "res_wb","data": "ddd","old_tags": [],"old_tags_id": [],"new_tags_id": [
"new_tag1"
],"tit": "3"
}
},"addtag": 0,"new_tags_id": []
},{
"typ": "res_tw","tit": "Post","data": "2121","subdata": null,"old_tags": [
"“519引号阅读user message图文”"
],"old_tags_id": [
"183"
],{
"typ": "res_wb","tit": "Today1","data": "12312321","dynamicdata": "{\"default\":{\"message_type\":\"1\",\"val\":\"dynamic\"},\"segementation\":[{\"segId\":\"451\",\"message_type\":\"1\",\"val\":\"你属于conversation 80这一组\"},{\"segId\":\"450\",\"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
PHP;">
$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。程序员遇到问题都会上（编程之家jb51.cc）查找问题解答方法！如果觉得站点还不错，随手转发给程序员朋友一下！
原文链接：https://www.f2er.com/php/17615.html