Centos 7 / Apache / PHP - mkdir(): Permission denied

Could be that although you have 755/777 permissions, SELinux is blocking httpd from writing/creating dirs.

Try:

chcon -R -t httpd_sys_content_t /path/to/wwwchcon -R -t httpd_sys_content_rw_t /path/to/www/dir/for/rw

php linux apache unix centos

Not sure but your Centos's PHP binaries may have broken file permissions. There are two ways to fix this up.

Compiling PHP from scratch. I would prefer this since all the control will be yours.
Or Changing your php script to use Umask() function of PHP. Documentation link

php linux apache unix centos

According to DRU Response

This issues is due to SELINUX. Use bellow command

chcon -R -t httpd_sys_content_rw_t /path/to/www/dir/for/rw

CodeHunter