Enabling SVG Uploads for Administrators in WordPress

This WordPress snippet allows administrators to upload SVG files by modifying the site’s allowed MIME types. It includes a security measure that restricts SVG uploads to administrator users only, mitigating potential risks associated with SVG file uploads from other user roles

function snn_allow_svg_upload( $upload_mimes ) {
    if ( ! current_user_can( 'administrator' ) ) {
        return $upload_mimes;
    }

    $upload_mimes['svg']  = 'image/svg+xml';
    $upload_mimes['svgz'] = 'image/svg+xml';

    return $upload_mimes;
}
add_filter( 'upload_mimes', 'snn_allow_svg_upload' );

function snn_svg_mime_check( $wp_check_filetype_and_ext, $file, $filename, $mimes, $real_mime ) {
    if ( ! $wp_check_filetype_and_ext['type'] ) {
        $check_filetype  = wp_check_filetype( $filename, $mimes );
        $ext             = $check_filetype['ext'];
        $type            = $check_filetype['type'];
        $proper_filename = $filename;

        if ( $type && 0 === strpos( $type, 'image/' ) && 'svg' !== $ext ) {
            $ext  = false;
            $type = false;
        }

        $wp_check_filetype_and_ext = compact( 'ext', 'type', 'proper_filename' );
    }

    return $wp_check_filetype_and_ext;
}
add_filter( 'wp_check_filetype_and_ext', 'snn_svg_mime_check', 10, 5 );