    public function uriComponentsEncodingProvider()
    {
        $unreserved = 'a-zA-Z0-9.-_~!$&\'()*+,;=:@';

        return [
            // Percent encode spaces
            ['/pa th?q=va lue#frag ment', '/pa%20th', 'q=va%20lue', 'frag%20ment', '/pa%20th?q=va%20lue#frag%20ment'],
            // Percent encode multibyte
            ['/€?€#€', '/%E2%82%AC', '%E2%82%AC', '%E2%82%AC', '/%E2%82%AC?%E2%82%AC#%E2%82%AC'],
            // Don't encode something that's already encoded
            ['/pa%20th?q=va%20lue#frag%20ment', '/pa%20th', 'q=va%20lue', 'frag%20ment', '/pa%20th?q=va%20lue#frag%20ment'],
            // Percent encode invalid percent encodings
            ['/pa%2-th?q=va%2-lue#frag%2-ment', '/pa%252-th', 'q=va%252-lue', 'frag%252-ment', '/pa%252-th?q=va%252-lue#frag%252-ment'],
            // Don't encode path segments
            ['/pa/th//two?q=va/lue#frag/ment', '/pa/th//two', 'q=va/lue', 'frag/ment', '/pa/th//two?q=va/lue#frag/ment'],
            // Don't encode unreserved chars or sub-delimiters
            ["/$unreserved?$unreserved#$unreserved", "/$unreserved", $unreserved, $unreserved, "/$unreserved?$unreserved#$unreserved"],
            // Encoded unreserved chars are not decoded
            ['/p%61th?q=v%61lue#fr%61gment', '/p%61th', 'q=v%61lue', 'fr%61gment', '/p%61th?q=v%61lue#fr%61gment'],
        ];
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.