fix compatability PHP 8.2+

CaptchaExtendedAction.php

@@ -163,7 +163,7 @@ public function getVerifyCode($regenerate = false)
 			$codeResult = $this->generateVerifyCode();
 			$session[$name] = $codeResult['code'];
 			$session[$name.'count'] = 1;
-			$session[$name.'result'] = preg_replace('/\s+/', '', $codeResult['result']); // white-space ignorant
+			$session[$name.'result'] = preg_replace('/\s+/u', '', $codeResult['result']); // white-space ignorant
 		}
 
 		return $session[$name];
@@ -191,7 +191,7 @@ public function getVerifyResult($regenerate = false)
 	 */
 	public function generateValidationHash($result)
 	{
-		$result = preg_replace('/\s+/', '', $result);
+		$result = preg_replace('/\s+/u', '', $result);
 		$result = urlencode($result); // convert accented characters to ASCII
 
 		for ($h = 0, $i = strlen($result) - 1; $i >= 0; --$i) {
@@ -217,7 +217,7 @@ public function validate($input, $caseSensitive){
 		$result = $session[$key.'result'];
 
 		// input always without whitespaces
-		$input = preg_replace('/\s+/', '', $input);
+		$input = preg_replace('/\s+/u', '', (string) $input);
 		$valid = $caseSensitive ? strcmp($input, $result) === 0 : strcasecmp($input, $result) === 0;
 
 		// increase attempts counter, but not in case of ajax-client validation (that is always POST request having variable 'ajax')
@@ -324,7 +324,7 @@ protected function getCodeWords()
 		}
 
 		$words = file_get_contents($this->fileWords);
-		$words = preg_split('/\s+/', $words);
+		$words = preg_split('/\s+/u', $words);
 		$found = [];
 
 		for($i = 0; $i < count($words); ++$i){

README.md

@@ -126,3 +126,51 @@ public function rules()
 	* also note standard properties supported by framework: `width`, `height`, `padding`, `offset`, `foreColor`, `backColor`, `transparent`, `minLength`, `maxLength`, ..
 
 7) Enjoy! :-)
+
+
+Changelog
+=========
+
+Version 1.0.5 - Nov 7, 2023
+------------------------------
+
+- PHP 8.2+ compatability
+- enable unicode in REGEX by default (/u modifier)
+
+
+Version 1.0.4 - Jun 30, 2021
+------------------------------
+
+- updated SK, CS words (dropped accented characters)
+
+
+Version 1.0.3 - Jun 07, 2020
+------------------------------
+
+- minor compatability fix for PHP 7.4+
+
+
+Version 1.0.2 - Feb 25, 2020
+------------------------------
+
+- configurable refresh parameter in URL
+- updated docs
+
+
+Version 1.0.1 - May 21, 2018
+------------------------------
+
+- added CS (Czech) words file
+- center formula horizontaly
+- updated documentation
+
+
+Version 1.0.0 - March 28, 2018
+------------------------------
+
+- rework of previous extension for Yii 1.x branch
+- added new options - custom character sets, resultMultiplier, randomUpperLowerCase, Imagick support
+- couple of potential bugfixes e.g. calculating pixel color ranges
+- full multibyte (MB) support
+- added support for installation via composer
+