add max file number limit

lib/DirScanner.php

@@ -36,6 +36,9 @@ Class DirScanner {
     private $tree = array();                        //目录扫描树形结构
 
 
+    private $maxFileNumber = 1000;                  //目录下最大文件数量支持
+
+
     protected $supportFileExtensions = array(            //支持的文件类型
         'txt',     //纯文本
         'md',      //纯文本
@@ -559,6 +562,7 @@ Class DirScanner {
             $nextLevels = $levels - $this->scanningDirLevel;
 
             $files = scandir($dir);
+            $counter = 0;
             foreach($files as $file) {
                 if (in_array($file, $ignore_files) || !$this->isValid($file)) {continue;}
 
@@ -583,6 +587,8 @@ Class DirScanner {
                         $branch = array_merge(['pid' => $pid], $branch);
                     }
                 }else {
+                    if ($counter >= $this->maxFileNumber) {break;}      //最大文件数量限制
+
                     $pathinfo = pathinfo($realpath);
                     $extension = strtolower($pathinfo['extension']);
                     if ( in_array($extension, $this->supportFileExtensions) ) {
@@ -605,6 +611,8 @@ Class DirScanner {
                     $this->scanResults[$branch['id']] = $branch;
                     $tree[$branch['id']] = $branch;
                 }
+
+                $counter ++;
             }
         }