Nice page transition

Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "head_nice_page_transition".

Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "register_nice_page_transition_menu".

Missing "License" in Plugin Header. Please update your Plugin Header with a valid GPLv2 (or later) compatible license.

The "Network" header in the plugin file is not valid. Can only be set to true, and should be left out when not needed.

Resource version not set in call to wp_enqueue_style(). This means new versions of the style may not always be loaded due to browser caching.

Resource version not set in call to wp_register_script(). This means new versions of the script may not always be loaded due to browser caching.

In footer ($in_footer) is not set explicitly wp_register_script; It is recommended to load scripts in the footer. Please set this value to `true` to load it in the footer, or explicitly `false` if it should be loaded in the header.

Processing form data without nonce verification.

Detected usage of a possibly undefined superglobal array index: $_POST['type']. Use isset() or empty() to check the index exists before using it

$_POST['type'] not unslashed before sanitization. Use wp_unslash() or similar