Помогите оптимизировать регулярку

PHP:

1. <?php
2.  
3. /**
4.   *
5.   * Hidden Statistics for external resources
6.   * .........................version 1.2.2
7.   *
8.   * Developer: CyberX
9.   * License: MIT
10.   *
11.   */
12.  
13. // Main config
14. require_once('./core/struct/DataBase.php');
15. require_once('./private/config.php');
16.  
17. // Structures
18. require_once('./core/libraries/DBX.php');
19. require_once('./core/libraries/Cipher.php');
20. require_once('./core/libraries/SafeHTML.php');
21. require_once('./private/config.php');
22.  
23. $dbConfig = file_get_contents($_SERVER["DOCUMENT_ROOT"] .'/private/db_config.ini', true);
24.  
25. /* Check installation */
26. if( strlen($dbConfig) > 0 ) {
27.  
28.   $cipher = new Cipher();
29.   $safe = new SafeHTML();
30.    
31.   $dbx_data = explode('|', $cipher::crypt('decrypt', $dbConfig));
32.  
33.   // get database engine API
34.   $dbx = new DBX($dbx_data);
35.  
36.   $query = [];
37.  
38.   if( !empty($_GET['query']) ) {
39.  
40.       $query_string = $safe::safe($_GET['query']);
41.  
42.     // QUERY PATTERN FIELDS
43.     $query['field_route']['value'] = '';
44.     $query['field_title']['value'] = '';
45.     $query['field_description']['value'] = '';
46.     $query['field_content']['value'] = $query_string;
47.  
48.     $dbx::query('q', 'revolver__nodes', $query);
49.  
50.     $search_query_result = $dbx::$result['result'];
51.     $output = '<div class="revolver__search_results"><ul>';
52.  
53.     foreach ($search_query_result as $k => $v) {
54.      
55.       $output .= '<li><a href="'. $v['field_route'] .'" title="'. $v['field_description'] .'">'. $v['field_title'] .'</a><span>'. $v['field_description'] .'</span>';
56.  
57.       $replace = trim(preg_replace('/ +/', ' ', preg_replace('/[^A-Za-z0-9 ]/', ' ', urldecode(strip_tags(html_entity_decode(strip_tags(preg_replace('/<[^>]*>/','',str_replace(array("&nbsp;","\n","\r"),"",html_entity_decode($v['field_content'], ENT_QUOTES,'UTF-8'))))))))));
58.      
59.       $snippet = preg_split("/". $query_string ."/i", $replace);
60.  
61.       $counter = 1;
62.  
63.       foreach ($snippet as $snip) {
64.  
65.           $length = ( (int)strlen( $snip ) / 100) * 30;
66.  
67.           if( $counter % 2 !== 0 ) {
68.  
69.               $highlight_1 = substr($snip, $length, 0);  
70.  
71.           }
72.           else {
73.  
74.             $highlight_2 = substr($snip, 0, $length);
75.          
76.           }
77.  
78.           $counter++;
79.  
80.       }
81.  
82.       $output .= '<dfn style="display:block; margin-bottom: 10px;">... '. $highlight_1 . $query_string . $highlight_2 .' ...</dfn></li>';
83.  
84.     }
85.  
86.     $output .= '</ul><p>Search for <b>'. $query_string .'</b>.</p></div>';
87.  
88.     print $output;
89.  
90.  
91.   }
92.   else {
93.  
94.     print '<div class="revolver__search_results"><p>Empty query</p></div>';
95.  
96.   }
97.  
98. }
99.  
100. ?>

Конкретно вот здесь приходится два раза делать одно и то же(почему так?).

PHP:

1. $replace = trim(preg_replace('/ +/', ' ', preg_replace('/[^A-Za-z0-9 ]/', ' ', urldecode(strip_tags(html_entity_decode(strip_tags(preg_replace('/<[^>]*>/','',str_replace(array("&nbsp;","\n","\r"),"",html_entity_decode($v['field_content'], ENT_QUOTES,'UTF-8'))))))))));

спасибо!