[redis] Fix ServerException. Code should be int, not null

fixes #650

Author: makasim

pkg/redis/PRedis.php

@@ -59,7 +59,7 @@ public function eval(string $script, array $keys = [], array $args = [])
             // mixed eval($script, $numkeys, $keyOrArg1 = null, $keyOrArgN = null)
             return call_user_func_array([$this->redis, 'eval'], array_merge([$script, count($keys)], $keys, $args));
         } catch (PRedisServerException $e) {
-            throw new ServerException('eval command has failed', null, $e);
+            throw new ServerException('eval command has failed', 0, $e);
         }
     }
 
@@ -68,7 +68,7 @@ public function zadd(string $key, string $value, float $score): int
         try {
             return $this->redis->zadd($key, [$value => $score]);
         } catch (PRedisServerException $e) {
-            throw new ServerException('zadd command has failed', null, $e);
+            throw new ServerException('zadd command has failed', 0, $e);
         }
     }
 
@@ -77,7 +77,7 @@ public function zrem(string $key, string $value): int
         try {
             return $this->redis->zrem($key, [$value]);
         } catch (PRedisServerException $e) {
-            throw new ServerException('zrem command has failed', null, $e);
+            throw new ServerException('zrem command has failed', 0, $e);
         }
     }
 
@@ -86,7 +86,7 @@ public function lpush(string $key, string $value): int
         try {
             return $this->redis->lpush($key, [$value]);
         } catch (PRedisServerException $e) {
-            throw new ServerException('lpush command has failed', null, $e);
+            throw new ServerException('lpush command has failed', 0, $e);
         }
     }
 
@@ -99,7 +99,7 @@ public function brpop(array $keys, int $timeout): ?RedisResult
 
             return null;
         } catch (PRedisServerException $e) {
-            throw new ServerException('brpop command has failed', null, $e);
+            throw new ServerException('brpop command has failed', 0, $e);
         }
     }
 
@@ -112,7 +112,7 @@ public function rpop(string $key): ?RedisResult
 
             return null;
         } catch (PRedisServerException $e) {
-            throw new ServerException('rpop command has failed', null, $e);
+            throw new ServerException('rpop command has failed', 0, $e);
         }
     }
 

pkg/redis/PhpRedis.php

@@ -31,7 +31,7 @@ public function eval(string $script, array $keys = [], array $args = [])
         try {
             return $this->redis->eval($script, array_merge($keys, $args), count($keys));
         } catch (\RedisException $e) {
-            throw new ServerException('eval command has failed', null, $e);
+            throw new ServerException('eval command has failed', 0, $e);
         }
     }
 
@@ -40,7 +40,7 @@ public function zadd(string $key, string $value, float $score): int
         try {
             return $this->redis->zAdd($key, $score, $value);
         } catch (\RedisException $e) {
-            throw new ServerException('zadd command has failed', null, $e);
+            throw new ServerException('zadd command has failed', 0, $e);
         }
     }
 
@@ -49,7 +49,7 @@ public function zrem(string $key, string $value): int
         try {
             return $this->redis->zRem($key, $value);
         } catch (\RedisException $e) {
-            throw new ServerException('zrem command has failed', null, $e);
+            throw new ServerException('zrem command has failed', 0, $e);
         }
     }
 
@@ -58,7 +58,7 @@ public function lpush(string $key, string $value): int
         try {
             return $this->redis->lPush($key, $value);
         } catch (\RedisException $e) {
-            throw new ServerException('lpush command has failed', null, $e);
+            throw new ServerException('lpush command has failed', 0, $e);
         }
     }
 
@@ -71,7 +71,7 @@ public function brpop(array $keys, int $timeout): ?RedisResult
 
             return null;
         } catch (\RedisException $e) {
-            throw new ServerException('brpop command has failed', null, $e);
+            throw new ServerException('brpop command has failed', 0, $e);
         }
     }
 
@@ -84,7 +84,7 @@ public function rpop(string $key): ?RedisResult
 
             return null;
         } catch (\RedisException $e) {
-            throw new ServerException('rpop command has failed', null, $e);
+            throw new ServerException('rpop command has failed', 0, $e);
         }
     }