例如,我下面有一个build.json文件.包含我在JSON中创建的基本文件夹/文件结构.

{

"folders": [

{

"name": "folder-a",

"files": [

{

"name": "file-a.html"

},

{

"name": "file-b.html"

}

],

"folders": [

{

"name": "sub-folder-a",

"files": [

{

"name": "sub-file-a.html"

},

{

"name": "sub-file-b.html"

}

]

}

]

},

{

"name": "folder-b",

"files": [

{

"name": "file-a.html"

},

{

"name": "file-b.html"

}

]

}

]

}

现在,我在下面创建了简单的PHP代码,可以遍历数组的第一部分.然后,当然,如果我继续在第一个foreach中进行foreach循环,则可以继续遍历数组.问题是我不知道阵列中将有多少个文件夹/文件.关于如何不知道循环多少就可以继续循环的任何想法？谢谢！

$json = file_get_contents('build.json');

$decode = json_decode($json);

foreach($decode as $key => $val){

foreach($val as $valKey => $data){

var_dump($data);

}

}

解决方法:

这是一个使用递归的工作脚本：

$json = file_get_contents('build.json');

$folders = json_decode($json);

function buildDirs($folders, $path = null){

$path = $path == null ? "" : $path . "/";

foreach($folders as $key => $val){

mkdir($path.$val->name);

echo "Folder: " . $path . $val->name . "
";

if(!empty($val->files)){

foreach($val->files as $file){

//Create the files inside the current folder $val->name

echo "File: " . $path . $val->name . "/" . $file->name . "
";

file_put_contents($path . $val->name . "/". $file->name, "your data");

}

}

if(!empty($val->folders)){ //If there are any sub folders, call buildDirs again!

buildDirs($val->folders, $path . $val->name);

}

}

}

buildDirs($folders->folders); //Will build from current directory, otherwise send the path without trailing slash /var/www/here

记住要对根文件夹设置正确的权限.

标签：loops,arrays,json,php,recursion

来源： https://codeday.me/bug/20191027/1947620.html