MkDir无法创建目录PHP [英] MkDir Failed creating directory PHP

问题描述

我正在尝试使用PHP创建目录，这可行:

I am trying to create a directory using PHP this works:

<?php
$uid = "user_615";
$thisdir = getcwd(); 

if(mkdir($thisdir ."/userpics/" . $uid , 0777)) 
{ 
   echo "Directory has been created successfully..."; 
} 
else 
{ 
   echo "Failed to create directory..."; 
} 
?>

但这不起作用

<?php
session_start();
$uid = $_SESSION['username'];
$thisdir = getcwd(); 

if(mkdir($thisdir ."/userpics/" . $uid , 0777)) 
{ 
   echo "Directory has been created successfully..."; 
} 
else 
{ 
   echo "Failed to create directory..."; 
} 
?>

是的，会话变量中填充的内容与"user_615"上面的内容完全相同，那么为什么第二个变量会失败?

Yes the session variable is populated with the exact same thing as above 'user_615' so why would the second one be failing?

所以我采纳了@stefgosselin的建议，并重新设计了代码

So I took the suggestion of @stefgosselin and re-designed the code to be

<?php
session_start();
$uid = $_SESSION['username'];
$thisdir = getcwd() . "/userpics" . $uid; 

if(mkdir($thisdir , 0777)) 
{ 
   echo "Directory has been created successfully..."; 
} 
else 
{ 
   echo "Failed to create directory..."; 
   echo "Your thisdir Variable is:'" . $thisdir . "'" ;
} 
?>

输出为

无法创建目录...您的此目录变量为:'/unified/b/bis/www.mysite.com/jou/userpics/user_615

Failed to create directory...Your thisdir Variable is:'/unified/b/bis/www.mysite.com/jou/userpics/user_615

还有什么其他想法会导致Session变量无法在创建目录中使用?

Any other ideas on what would cause the a Session variable not to be able to used in creating a directory?

推荐答案

作为一个小技巧，我只是将所有$thisdir放入变量中，然后检查其输出是否合计您期望的结果.

As a small tip, I would simply put all of $thisdir in a variable and check if the output of that adds up to the result you are expecting.

IE:在变量中定义$thisdir ."/userpics/" . $uid将使您能够轻松输出并验证传递给mkdir的参数值.

IE: Having $thisdir ."/userpics/" . $uid defined in a variable would give you the possibility to easily output and validate the argument value you are passing to mkdir.

调整了较小的措词，以获得更好的英语翻译.抱歉，以上还不清楚，Wesley明白了我笨拙地试图提出的简单观点.

Adjusted minor phrasing for better english translation. Sorry above wasn't clear, Wesley understood the simple point I was clumsily trying to make.

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