--- fenglin/lib/str_process.inc.php	2025/07/02 02:00:57	1.20
+++ fenglin/lib/str_process.inc.php	2025/10/18 14:15:35	1.21
@@ -10,14 +10,14 @@ function str_length(string $str) : int
 
 		// Process UTF-8 Chinese characters
 		$v1 = ord($c);
-		if ($v1 & 0b10000000) //head of multi-byte character
+		if ($v1 & 0x80) //head of multi-byte character
 		{
-			$v2 = ($v1 & 0b01110000) << 1;
-			while ($v2 & 0b10000000)
+			$v2 = ($v1 & 0x70) << 1;
+			while ($v2 & 0x80)
 			{
 				$i++;
 				$c .= $str[$i];
-				$v2 = ($v2 & 0b01111111) << 1;
+				$v2 = ($v2 & 0x7f) << 1;
 			}
 
 			$ret += 2;
@@ -72,14 +72,14 @@ function split_line(string $str, string
 
 		// Process UTF-8 Chinese characters
 		$v1 = ord($c);
-		if ($v1 & 0b10000000) //head of multi-byte character
+		if ($v1 & 0x80) //head of multi-byte character
 		{
-			$v2 = ($v1 & 0b01110000) << 1;
-			while ($v2 & 0b10000000)
+			$v2 = ($v1 & 0x70) << 1;
+			while ($v2 & 0x80)
 			{
 				$i++;
 				$c .= $str[$i];
-				$v2 = ($v2 & 0b01111111) << 1;
+				$v2 = ($v2 & 0x7f) << 1;
 			}
 
 			// Each UTF-8 CJK character should use two character length for display