File_exists and Realpath return false, but the file exists and permissions are correct

The questions below, which occur in PHP 5.5.14,
After testing, there is no problem after 5.4.30 ...
Do not know is 5.5.14 Bug or god horse's ...
Is there a way to solve the problem in 5.5.14?

(Note: The folder name has been coded in the text)
The actual code in PHP is as follows:

得到了结果如下：

string(28) "/home/wwwroot/m*****/u******" bool(false) bool(false) 

在网上找了好久，起初认为是文件夹权限，
所以我将 /home/wwwroot/ 下归递改为 755 （chmod -Rf 755 /home/wwwroot），
但是结果还是一样。

Reply content:

The questions below, which occur in PHP 5.5.14,
After testing, there is no problem after 5.4.30 ...
Do not know is 5.5.14 Bug or god horse's ...
Is there a way to solve the problem in 5.5.14?

(Note: The folder name has been coded in the text)
The actual code in PHP is as follows:

得到了结果如下：

string(28) "/home/wwwroot/m*****/u******" bool(false) bool(false) 

在网上找了好久，起初认为是文件夹权限，
所以我将 /home/wwwroot/ 下归递改为 755 （chmod -Rf 755 /home/wwwroot），
但是结果还是一样。

If it is a system of Redhat systems, Also check that SELinux permissions are correct

php file is not UTF8 encoded, the file name to be detected is not Chinese? If so, you need to transcode to gb2312,
Example:

file_exists (Iconv (' Utf-8 ', ' gbk ', ' d:/test/Chinese ah. txt ');  

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