Reject Fluent Forms Messages in Foreign Scripts
Stops Fluent Forms submissions that are written mostly in Cyrillic, Chinese or another script your business does not receive genuine messages in.
Opens WPIDE on
Code
$wpide_ff_blocked_scripts = array( 'Cyrillic', 'Han', 'Arabic', 'Hangul', 'Thai' );
$wpide_ff_script_share = 0.3;
add_filter( 'fluentform/validation_errors', function ( $errors, $data ) use ( $wpide_ff_blocked_scripts, $wpide_ff_script_share ) {
$text = '';
foreach ( (array) $data as $name => $value ) {
if ( is_string( $value ) && 0 !== strpos( (string) $name, '_' ) ) {
$text .= ' ' . $value;
}
}
$letters = preg_match_all( '/\p{L}/u', $text );
if ( $letters < 10 ) {
return $errors;
}
$foreign = 0;
foreach ( $wpide_ff_blocked_scripts as $script ) {
$foreign += (int) preg_match_all( '/\p{' . $script . '}/u', $text );
}
if ( $foreign / $letters >= $wpide_ff_script_share ) {
$errors['message'] = array( 'Your message could not be sent.' );
}
return $errors;
}, 10, 2 );Notes
Remove scripts from the list that your customers actually write in.
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