如果目录已经存在，如何退出脚本？

Question

下面有一个PHP代码可以在当前目录中创建多个目录。

如果目录已经存在，我需要终止脚本。

但相反，我收到多个“文件存在”警告消息。

法典

<?php

//Creates multiple directories inside the current directory.

$curdir = getcwd();

$slash = "/0";

for ($dir = 1; $dir <= 12; $dir++){

      $concat = $slash . $dir;

      if (!file_exists($concat)) {

        mkdir($curdir . "$concat" , 0777);

      } else {

        exit("Files already exist.");

      }

} 

?>

输出

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Warning: mkdir(): File exists in /opt/lampp/htdocs/SQL/mkdir.php on line 14

Answer 1

您必须编辑 if 语句。您正在检查的目录与您创建的目录不同的目录：<?php$curdir = getcwd();$slash = "/0";for ($dir = 1; $dir <= 12; $dir++){&nbsp; &nbsp; &nbsp; $concat = $slash . $dir;&nbsp; &nbsp; &nbsp; if (!file_exists($curdir . $concat)) {&nbsp; &nbsp; &nbsp; &nbsp; mkdir($curdir . $concat , 0777);&nbsp; &nbsp; &nbsp; } else {&nbsp; &nbsp; &nbsp; &nbsp; exit("Files already exist.");&nbsp; &nbsp; &nbsp; }}&nbsp;