Added check in agentzero::parse() to check that all the characters in the input UA string are printable.

Changed `preg_replace()`call for normalising spaces to a `str_replace()`.
Updated `index.php` to correctly check when the value could not be parsed.
Updated some test strings that had invalid characters in them.

Author: hexydec

composer.lock

@@ -153,7 +153,7 @@
 					<input type="submit" class="form__submit" value="Parse User Agent String" />
 				</div>
 			</form>
-			<?php if ($output !== null) { ?>
+			<?php if ($output !== false) { ?>
 				<pre><?= htmlspecialchars(\strval(\print_r(\array_filter((array) $output, fn(mixed $value) => $value !== null), true))); ?></pre>
 				<p>Generated in <?= \number_format($total, 5); ?></p>
 			<?php } ?>

index.php

@@ -195,14 +195,17 @@ protected static function getTokens(string $ua, array $single, array $ignore) :
 	 * @return agentzero|false An agentzero object containing the parsed values of the input UA, or false if it could not be parsed
 	 */
 	public static function parse(string $ua, array $hints = [], array $config = []) : agentzero|false {
-		$ua = \preg_replace('/\s{2,}/', ' ', $ua);
+		$ua = \str_replace('  ', ' ', $ua);
 
 		// parse client hints
 		$hinted = $ua;
 		$browser = hints::parse($hinted, $hints);
 
+		// check all printable characters
+		if (!\ctype_print($ua)) {
+
 		// get config
-		if (($config = config::get($config)) === null) {
+		} elseif (($config = config::get($config)) === null) {
 
 		// get tokens
 		} elseif (($tokens = self::getTokens(\trim($hinted, ' "\''), $config['single'], $config['ignore'])) !== false) {

src/agentzero.php

@@ -446,7 +446,7 @@ public function testBrave() : void {
 				'engineversion' => '601.1.46',
 				'browser' => 'Brave',
 				'browserversion' => '1.2.11',
-				'browserreleased' => '2025-03-26'
+				'browserreleased' => '2025-04-23'
 			],
 			'Mozilla/5.0 (Macintosh; Intel Mac OS X 13_4_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Brave/115.0.0.0 Safari/605.1.15' => [
 				'string' => 'Mozilla/5.0 (Macintosh; Intel Mac OS X 13_4_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Brave/115.0.0.0 Safari/605.1.15',

tests/browsersTest.php

@@ -264,8 +264,8 @@ public function testSearch() : void {
 				'engineversion' => '103.0.5060.134',
 				'browserreleased' => '2022-07-19'
 			],
-			'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.345.0 Mobile Safari/537.36  (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)' => [
-				'string' => 'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.345.0 Mobile Safari/537.36 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
+			'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.345.0 Mobile Safari/537.36  (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)' => [
+				'string' => 'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.345.0 Mobile Safari/537.36 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
 				'type' => 'robot',
 				'category' => 'search',
 				'app' => 'Bing Bot',

tests/crawlersTest.php

@@ -255,7 +255,7 @@
 	'Googlebot-Video/1.0',
 	'Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012; Storebot-Google/1.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36',
 	'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/103.0.5060.134 Safari/537.36',
-	'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.345.0 Mobile Safari/537.36  (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
+	'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.345.0 Mobile Safari/537.36  (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
 	'Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
 	'Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 (compatible; adidxbot/2.0; +http://www.bing.com/bingbot.htm)',
 	'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/80.0.345.0 Safari/537.36',