translate_smiley( array $matches ): string

3437function translate_smiley( $matches ) {3438	global $wpsmiliestrans;3439 3440	if ( 0 === count( $matches ) ) {3441		return '';3442	}3443 3444	$smiley = trim( reset( $matches ) );3445	$img    = $wpsmiliestrans[ $smiley ];3446 3447	$matches    = array();3448	$ext        = preg_match( '/\.([^.]+)$/', $img, $matches ) ? strtolower( $matches[1] ) : false;3449	$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'webp', 'avif' );3450 3451	// Don't convert smilies that aren't images - they're probably emoji.3452	if ( ! in_array( $ext, $image_exts, true ) ) {3453		return $img;3454	}3455 3456	/**3457	 * Filters the Smiley image URL before it's used in the image element.3458	 *3459	 * @since 2.9.03460	 *3461	 * @param string $smiley_url URL for the smiley image.3462	 * @param string $img        Filename for the smiley image.3463	 * @param string $site_url   Site URL, as returned by site_url().3464	 */3465	$src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() );3466 3467	return sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', esc_url( $src_url ), esc_attr( $smiley ) );3468}