diff --git a/PHP/php_snowdrift.h b/PHP/php_snowdrift.h
index 22b5d062377cef0a2ccb4df50109e5cbd2b0d5cf..82efc5a0cda39ae62fd537a7cc57331598a3da96 100644
--- a/PHP/php_snowdrift.h
+++ b/PHP/php_snowdrift.h
@@ -54,7 +54,6 @@ ZEND_BEGIN_MODULE_GLOBALS(snowdrift)
 uint8_t Method;
 uint64_t BaseTime;
 uint8_t WorkerId;
-uint8_t WorkerIdNum;
 uint8_t WorkerIdBitLength;
 uint8_t SeqBitLength;
 uint32_t MaxSeqNumber;
diff --git a/PHP/snowdrift.c b/PHP/snowdrift.c
index 656b8a5841bc1f5fc392ce9b172382309220a6c7..628c56a884735e70de4f013b6c4efaeb66c33e11 100644
--- a/PHP/snowdrift.c
+++ b/PHP/snowdrift.c
@@ -43,11 +43,10 @@ PHP_INI_BEGIN()
 STD_PHP_INI_ENTRY("snowdrift.Method", "1", PHP_INI_SYSTEM, OnUpdateLongGEZero, Method, zend_snowdrift_globals, snowdrift_globals)
 STD_PHP_INI_ENTRY("snowdrift.BaseTime", "1582136402000", PHP_INI_SYSTEM, OnUpdateLongGEZero, BaseTime, zend_snowdrift_globals, snowdrift_globals)
 STD_PHP_INI_ENTRY("snowdrift.WorkerId", "1", PHP_INI_SYSTEM, OnUpdateLongGEZero, WorkerId, zend_snowdrift_globals, snowdrift_globals)
-STD_PHP_INI_ENTRY("snowdrift.WorkerIdNum", "63", PHP_INI_SYSTEM, OnUpdateLongGEZero, WorkerIdNum, zend_snowdrift_globals, snowdrift_globals)
 STD_PHP_INI_ENTRY("snowdrift.WorkerIdBitLength", "6", PHP_INI_SYSTEM, OnUpdateLongGEZero, WorkerIdBitLength, zend_snowdrift_globals, snowdrift_globals)
 STD_PHP_INI_ENTRY("snowdrift.SeqBitLength", "6", PHP_INI_SYSTEM, OnUpdateLongGEZero, SeqBitLength, zend_snowdrift_globals, snowdrift_globals)
 STD_PHP_INI_ENTRY("snowdrift.MaxSeqNumber", "0", PHP_INI_SYSTEM, OnUpdateLongGEZero, MaxSeqNumber, zend_snowdrift_globals, snowdrift_globals)
-STD_PHP_INI_ENTRY("snowdrift.MinSeqNumber", "0", PHP_INI_SYSTEM, OnUpdateLongGEZero, MinSeqNumber, zend_snowdrift_globals, snowdrift_globals)
+STD_PHP_INI_ENTRY("snowdrift.MinSeqNumber", "5", PHP_INI_SYSTEM, OnUpdateLongGEZero, MinSeqNumber, zend_snowdrift_globals, snowdrift_globals)
 STD_PHP_INI_ENTRY("snowdrift.TopOverCostCount", "2000", PHP_INI_SYSTEM, OnUpdateLongGEZero, TopOverCostCount, zend_snowdrift_globals, snowdrift_globals)
 PHP_INI_END()
 
@@ -56,16 +55,12 @@ PHP_INI_END()
 static int snowdrift_init()
 {
   wid_num = (-1L << SD_G(WorkerIdBitLength)) ^ -1L;
-  if (SD_G(WorkerIdNum) < wid_num)
-  {
-    wid_num = SD_G(WorkerIdNum);
-  }
   shmctx.size = wid_num * sizeof(snowflake);
   if (shm_alloc(&shmctx) == -1)
   {
     return FAILURE;
   }
-  if (SD_G(MaxSeqNumber) < SD_G(MinSeqNumber))
+  if (SD_G(MaxSeqNumber) != 0 && SD_G(MaxSeqNumber) < SD_G(MinSeqNumber))
   {
     return FAILURE;
   }
diff --git a/PHP/src/snowflake/snowflake.c b/PHP/src/snowflake/snowflake.c
index 5a298fbb002c8d28e835e052cc94426c793723ef..feebd4505b808eaac430bbc707a68627a7cf9069 100644
--- a/PHP/src/snowflake/snowflake.c
+++ b/PHP/src/snowflake/snowflake.c
@@ -43,7 +43,10 @@ void Config(snowflake *flake)
   flake->BaseTime = flake->BaseTime != 0 ? flake->BaseTime : 1577808000000;
   flake->_TimestampShift = (uint8_t)(flake->WorkerIdBitLength + flake->SeqBitLength);
   flake->_CurrentSeqNumber = flake->MinSeqNumber;
-  return;
+  if (flake->MaxSeqNumber <= flake->MinSeqNumber)
+  {
+    flake->MinSeqNumber = 0;
+  }
 }
 
 void inline EndOverCostAction(uint64_t useTimeTick, snowflake *flake)