In a PHP / Apache / Linux context, why exactly is chmod 777 dangerous?

In a PHP / Apache / Linux context, why exactly is chmod 777 dangerous?

php linux security apache chmod

apache

PHP chmod( ):Operation not permitted, safe_mode deprecation involved?

php apache file-permissions chmod virtualmin

apache

PHP: get_current_user() vs. exec('whoami')

php apache unix xampp chmod

apache

Apache - Permissions are missing on a component of the path

apache .htaccess permissions chmod chown

apache

Setting write permissions on Django Log files

django apache chmod

apache

You don't have permission error in Apache in CentOS

linux apache centos chmod document-root

apache

Secure chmod privileges?

php apache unix chmod

apache

Why can't my PHP script chmod a file it creates?

php apache chmod

apache

How to run a perl script in localhost?

perl apache chmod mod-perl cgi-bin

apache

PHP Warning: Unknown: failed to open stream: Permission denied in Unknown on line 0

php windows apache pear chmod

apache

Why is my folder not being visible to the web? or upload-able?

php apache file-permissions chmod

apache

Apache user can't create files in 777 directory

linux apache permissions chmod selinux

apache

Fedora file permissions apache no write acces

apache permissions fedora chmod chown

apache

Apache does not have write permission on html folder

php apache chmod

apache

Wordpress can't write to file

wordpress apache permissions file-permissions chmod

apache