Restrict File Uploads in PHP configuration

Restricting all file uploads is an easy way to completely prevent attackers from exploiting your PHP configuration to inject their own PHP scripts. However, some developers will want to include the ability to upload files to your server via PHP. If you must allow file uploads, you should change the default temporary directory for file uploads using the upload_tmp_dir parameter.

Many administrators also choose to limit the maximum file size users can upload using the upload_max_filesize parameter. Setting this parameter is generally not intended to improve the security of your PHP configuration. Administrators choose to set this parameter to help manage the server’s PHP load.

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