即使文件绝对可执行，PHP函数is_executable也会返回false

Question

I'm using PHP 5.3.

Using getfacl the files permissions are:

user::rwx
group::r-x
other::r-x

I also am having problems using PHP's Program execution Functions, http://www.php.net/manual/en/ref.exec.php

The program in question is wkhtmltopdf and I have it in my /usr/bin directory.

I have the convert program in my /usr/bin directory with the exact same permissions and the is_executable function returns true.

Answer 1

After some research I solved this. The problem was selinux policies standing in the way. I used the Security Context from /usr/bin/convert and used the chcon command to apply the same security context to /usr/bin/wkhtmltopdf