diff --git a/PHP/snowdrift.c b/PHP/snowdrift.c
index f3fa147..ad836e4 100644
--- a/PHP/snowdrift.c
+++ b/PHP/snowdrift.c
@@ -67,7 +67,8 @@ static int snowdrift_init()
   }
   bzero(shmctx.addr, wid_num * sizeof(snowflake));
   sf = (snowflake *)shmctx.addr;
-  for (int i = 0; i < wid_num; i++)
+  int i;
+  for (i = 0; i < wid_num; i++)
   {
     snowflake *tmp = (sf + i);
     tmp->Method = SD_G(Method);
@@ -116,7 +117,8 @@ PHP_METHOD(snowdrift, NextNumId)
   }
   snowflake *flake = (sf + wid);
   array_init(return_value);
-  for (int i = 0; i < num; i++)
+  int i;
+  for (i = 0; i < num; i++)
   {
     add_next_index_long(return_value, NextId(flake));
   }
diff --git a/PHP/src/snowflake/snowflake.c b/PHP/src/snowflake/snowflake.c
index f7e0aa1..ff875ea 100644
--- a/PHP/src/snowflake/snowflake.c
+++ b/PHP/src/snowflake/snowflake.c
@@ -1,6 +1,7 @@
 #include <unistd.h>
 #include <sys/time.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include "snowflake.h"
 #include "spinlock.h"
 
@@ -45,7 +46,7 @@ void Config(snowflake *flake)
   else if (flake->BaseTime < 631123200000 || flake->BaseTime > GetCurrentTime())
   {
     perror("BaseTime error.");
-    return 0;
+    exit(1);
   }
 
   // 2.WorkerIdBitLength
@@ -278,7 +279,8 @@ uint64_t *NextNumId(snowflake *flake, uint32_t num)
 {
   uint64_t *arr = (uint64_t *)malloc(sizeof(uint64_t) * num);
   spin_lock(&flake->_Lock, pid);
-  for (uint32_t i = 0; i < num; i++)
+  uint32_t i;
+  for (i = 0; i < num; i++)
   {
     arr[i] = GetId(flake);
   }
diff --git a/PHP/src/test.c b/PHP/src/test.c
index fd5856a..52540f7 100644
--- a/PHP/src/test.c
+++ b/PHP/src/test.c
@@ -40,7 +40,8 @@ uint64_t containsDuplicate()
 
 void run()
 {
-  for (int i = 0; i < TOTAL / THREAD; i++)
+  int i;
+  for (i = 0; i < TOTAL / THREAD; i++)
   {
     arr[__sync_fetch_and_add(&index, 1)] = NextId(flake);
   }
@@ -56,7 +57,8 @@ int main()
   {
     // clock_gettime(CLOCK_REALTIME, &t_start);
 
-    // for (int i = 0; i < THREAD; i++)
+    int i;
+    // for (i = 0; i < THREAD; i++)
     // {
     //   if (pthread_create(&tid[i], NULL, (void *)run, NULL) != 0)
     //   {
@@ -65,7 +67,7 @@ int main()
     //   }
     // }
 
-    // for (int i = 0; i < THREAD; i++)
+    // for (i = 0; i < THREAD; i++)
     // {
     //   pthread_join(tid[i], NULL); //等待线程结束
     // }
@@ -91,7 +93,7 @@ int main()
     // index = 0;
 
     gettimeofday(&t_start, NULL);
-    for (int i = 0; i < TOTAL; i++)
+    for (i = 0; i < TOTAL; i++)
     {
       NextId(flake);
     }