Fix crash when using the search bar in recent versions of php

Changelog.md

@@ -23,6 +23,7 @@ This file holds the changelog for Pepperminty Wiki. This is the master list of t
  - Improved error handling on first run where the PHP Zip extension is not installed
  - Also extract to `._extra_data` if the directory is empty
  - Add `sidebar_show` to the settings GUI and the [configuration guide](https://starbeamrainbowlabs.com/labs/peppermint/peppermint-config-info.php)
+ - Fix crash when using the search bar with PHP 8.0+
 
 
 ## v0.22

modules/lib-search-engine.php

@@ -533,7 +533,7 @@ class search
 	 * Example I used when writing this: https://www.php.net/manual/en/function.strtok.php#94463
 	 * @param	string	$query	The query string to split.
 	 */
-	public function stas_split($query) {
+	public static function stas_split($query) {
 		$query = self::$literator->transliterate($query);
 		
 		$terms = [];
@@ -561,7 +561,7 @@ class search
 
 	 * @param	string[]	$tokens	The array of query tokens to parse.
 	 */
-	public function stas_parse($tokens) {
+	public static function stas_parse($tokens) {
 		global $settings;
 		
 		/* Supported Syntax *