Get a list of files, click on the file name to open the method, who has time to help AH

Right and left two columns, the left column to extract all the HTML files in a directory, the mouse click on the file name, you can display the click of the HTML file in the sidebar this is the HTML structure
The file directory is as follows:

 The clicked HTML file is shown here//echo OpenFile (not written here);//Get file List function GetFile ($dir) {$fileArray []=null;        if (false! = ($handle = Opendir ($dir))) {$i = 0; while (false!== ($file = Readdir ($handle))) {//Remove "". ",".. " and a file with a ". xxx" suffix if ($file! = "." && $file! = "..." &&strpos ($file, "."))                {$fileArray [$i]= "". $file;                if ($i ==100) {break;            } $i + +;    }}//Close handle Closedir ($handle); }foreach ($fileArray as $value) {echo "". $value. "";//Here Output array contents echo "
";} return $fileArray;}    Open File Functions function OpenFile ($filename) {$return = ';     if ($fp = fopen ($filename, ' RB ')) {while (!feof ($fp)) {$return. = fread ($fp, 1024);      } fclose ($FP);    return $return;    } else {return false; }} [code=php]

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To lay out the frame, specify the target property in the a tag. You can refer to the CSDN Forum's wording.

How does PHP implement a tree-like structure on the left side of explorer?

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