How to merge the contents of multiple files into a new file in php

This article mainly introduces PHP's method of merging the contents of multiple files into new files, involving PHP encoding conversion, file and directory traversal, and file reading and writing related operating techniques. Friends in need can refer to the following

The example in this article describes how PHP implements merging the contents of multiple files into a new file. Share it with everyone for your reference, the details are as follows:

function test()
{
  $hostdir= iconv("utf-8","gbk","C:\Users\原万里\Desktop\日常笔记") ; //iconv()转换编码方式，将UTF-8转换为gbk，若是报错在gbk后加//IGNORE
  $filesnames = scandir($hostdir); //scandir() 函数返回指定目录中的文件和目录的数组。默认升序排列，
  foreach ($filesnames as $name) {
       if($name!=".." && $name!=".") //遍历结果中会多出‘.'以及‘..'，没有用处，不予处理;
       {
         $cipath = $hostdir.$name;
         $cjfilenames = scandir($cipath); //根据情况再决定是否再向下遍历一次
         foreach($cjfilenames as $cjname)
         {
            if($cjname!=".." && $cjname!="." &&!is_dir($cipath."/".$cjname))
             {
               $str = file_get_contents($cipath."/".$cjname);
               file_put_contents("e:/test.txt",$str,FILE_APPEND);
             }
         }
       }
     echo "\n";
  }
}

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