All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$section'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$section'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$section'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found 'FX_BUILDER_VERSION'.

Processing form data without nonce verification.

Processing form data without nonce verification.

Processing form data without nonce verification.

$_POST data not unslashed before sanitization. Use wp_unslash() or similar

Processing form data without nonce verification.

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

json_encode() is discouraged. Use wp_json_encode() instead.

json_encode() is discouraged. Use wp_json_encode() instead.

urlencode() should only be used when dealing with legacy applications rawurlencode() should now be used instead. See http://php.net/manual/en/function.rawurlencode.php and http://www.faqs.org/rfcs/rfc3986.html