add gen_uuidv4 and gen_uuidv7

src/Function/Misc.php

@@ -6,7 +6,7 @@
     Desc.         : Fungsi Custom Lain Lain
     Created By    : Siau Pheng ([email protected]).
     Created Date  : January 27th, 2008.
-    Last Modified : August 21st, 2026.
+    Last Modified : October 27th, 2026.
 
     (c) 3FONIA Software; WWW.3FONIA.COM.
 
@@ -362,3 +362,41 @@ if (!function_exists('random_color')) {
         return "rgba(".$col_r.",".$col_g.",".$col_b.",".$trans.")";
     }
 }
+
+if (!function_exists('gen_uuidv4')) {
+    function gen_uuidv4(): string {
+        $data = random_bytes(16);
+        // Set version to 0100 (UUID v4)
+        $data[6] = chr(ord($data[6]) & 0x0f | 0x40);
+        // Set bits 6-7 to 10
+        $data[8] = chr(ord($data[8]) & 0x3f | 0x80);
+        return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
+    }
+}
+
+if (!function_exists('gen_uuidv7')) {
+    function gen_uuidv7(int $time=0): string {
+        // Get timestamp in milliseconds (48 bits)
+        if (empty($time)) $time = (int) floor(microtime(true) * 1000);
+        // Generate 16 bytes of random data
+        $randomBytes = random_bytes(16);
+        // Pack the 48-bit timestamp into the first 6 bytes
+        $timeHex = str_pad(dechex($time), 12, '0', STR_PAD_LEFT);
+        $bytes = hex2bin($timeHex);
+        // Append 10 bytes of randomness (we need 16 total bytes)
+        $bytes .= substr($randomBytes, 0, 10);
+        // Apply the version bits (Version 7 -> 0b0111) onto byte 6
+        $bytes[6] = chr((ord($bytes[6]) & 0x0f) | 0x70);
+        // Apply the variant bits (Variant 1 -> 0b10xx) onto byte 8
+        $bytes[8] = chr((ord($bytes[8]) & 0x3f) | 0x80);
+        // Unpack to hex string and format with hyphens
+        $hex = bin2hex($bytes);
+        return sprintf('%08s-%04s-%04s-%04s-%012s',
+            substr($hex, 0, 8),
+            substr($hex, 8, 4),
+            substr($hex, 12, 4),
+            substr($hex, 16, 4),
+            substr($hex, 20, 12)
+        );
+    }
+}