Trim long URLs

trim-long-urls.php

add_filter( 'the_content', function( $content ) {
	return preg_replace_callback (
		'#https?://[^\s<]+#i',
		function( $matches ) {
			$url = $matches[0];
			$display = preg_replace( '#https?://#', '', $url );

			if( strlen( $display ) > 50 ) {
				$display = substr( $display, 0, 25 ) . '…' . substr( $display, -15 );
			}

			return '<a href="' . $url . '" target="_blank" rel="noopener">' . $display . '</a>';
		},
		$content
	);
} );