Separate compression and create utility methods

This commit splits compression and serialization into two distinct parts and adds some utility functions so the user can compress/uncompress or pack/unpack data explicily. See #1939
2026-03-24 00:52:16 +01:00 · 2021-04-18 15:27:59 -07:00
parent 2d72c55d7d
commit 4cb4cd0ee2
10 changed files with 330 additions and 75 deletions
--- a/library.c
+++ b/library.c
@@ -2820,19 +2820,7 @@ static uint8_t crc8(unsigned char *input, size_t len) {
 #endif

 PHP_REDIS_API int
-redis_pack(RedisSock *redis_sock, zval *z, char **val, size_t *val_len)
-{
-    char *buf;
-    int valfree;
-    size_t len;
-
-    valfree = redis_serialize(redis_sock, z, &buf, &len);
-    if (redis_sock->compression == REDIS_COMPRESSION_NONE) {
-        *val = buf;
-        *val_len = len;
-        return valfree;
-    }
-
+redis_compress(RedisSock *redis_sock, char **dst, size_t *dstlen, char *buf, size_t len) {
    switch (redis_sock->compression) {
        case REDIS_COMPRESSION_LZF:
 #ifdef HAVE_REDIS_LZF
@@ -2845,9 +2833,8 @@ redis_pack(RedisSock *redis_sock, zval *z, char **val, size_t *val_len)
                size = len + MIN(UINT_MAX - len, MAX(LZF_MARGIN, len / 25));
                data = emalloc(size);
                if ((res = lzf_compress(buf, len, data, size)) > 0) {
-                    if (valfree) efree(buf);
-                    *val = data;
-                    *val_len = res;
+                    *dst = data;
+                    *dstlen = res;
                    return 1;
                }
                efree(data);
@@ -2877,10 +2864,8 @@ redis_pack(RedisSock *redis_sock, zval *z, char **val, size_t *val_len)
                data = emalloc(size);
                size = ZSTD_compress(data, size, buf, len, level);
                if (!ZSTD_isError(size)) {
-                    if (valfree) efree(buf);
-                    data = erealloc(data, size);
-                    *val = data;
-                    *val_len = size;
+                    *dst = erealloc(data, size);
+                    *dstlen = size;
                    return 1;
                }
                efree(data);
@@ -2928,22 +2913,21 @@ redis_pack(RedisSock *redis_sock, zval *z, char **val, size_t *val_len)
                    break;
                }

-                if (valfree) efree(buf);
-                *val = lz4buf;
-                *val_len = lz4len + REDIS_LZ4_HDR_SIZE;
+                *dst = lz4buf;
+                *dstlen = lz4len + REDIS_LZ4_HDR_SIZE;
                return 1;
            }
 #endif
            break;
    }
-    *val = buf;
-    *val_len = len;
-    return valfree;
+
+    *dst = buf;
+    *dstlen = len;
+    return 0;
 }

 PHP_REDIS_API int
-redis_unpack(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret)
-{
+redis_uncompress(RedisSock *redis_sock, char **dst, size_t *dstlen, const char *src, size_t len) {
    switch (redis_sock->compression) {
        case REDIS_COMPRESSION_LZF:
 #ifdef HAVE_REDIS_LZF
@@ -2952,24 +2936,27 @@ redis_unpack(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret)
                int i;
                uint32_t res;

-                if (val_len == 0)
+                if (len == 0)
                    break;

                /* start from two-times bigger buffer and
                 * increase it exponentially  if needed */
                errno = E2BIG;
                for (i = 2; errno == E2BIG; i *= 2) {
-                    data = emalloc(i * val_len);
-                    if ((res = lzf_decompress(val, val_len, data, i * val_len)) == 0) {
+                    data = emalloc(i * len);
+                    if ((res = lzf_decompress(src, len, data, i * len)) == 0) {
                        /* errno != E2BIG will brake for loop */
                        efree(data);
                        continue;
-                    } else if (redis_unserialize(redis_sock, data, res, z_ret) == 0) {
-                        ZVAL_STRINGL(z_ret, data, res);
                    }
-                    efree(data);
+
+                    *dst = data;
+                    *dstlen = res;
                    return 1;
                }
+
+                efree(data);
+                break;
            }
 #endif
            break;
@@ -2977,25 +2964,21 @@ redis_unpack(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret)
 #ifdef HAVE_REDIS_ZSTD
            {
                char *data;
-                unsigned long long len;
+                unsigned long long zlen;

-                len = ZSTD_getFrameContentSize(val, val_len);
+                zlen = ZSTD_getFrameContentSize(src, len);
+                if (zlen == ZSTD_CONTENTSIZE_ERROR || zlen == ZSTD_CONTENTSIZE_UNKNOWN || zlen > INT_MAX)
+                    break;

-                if (len != ZSTD_CONTENTSIZE_ERROR && len != ZSTD_CONTENTSIZE_UNKNOWN && len <= INT_MAX)
-                {
-                    size_t zlen;
-
-                    data = emalloc(len);
-                    zlen = ZSTD_decompress(data, len, val, val_len);
-                    if (ZSTD_isError(zlen) || zlen != len) {
-                        efree(data);
-                        break;
-                    } else if (redis_unserialize(redis_sock, data, zlen, z_ret) == 0) {
-                        ZVAL_STRINGL(z_ret, data, zlen);
-                    }
+                data = emalloc(zlen);
+                *dstlen = ZSTD_decompress(data, zlen, src, len);
+                if (ZSTD_isError(*dstlen) || *dstlen != zlen) {
                    efree(data);
-                    return 1;
+                    break;
                }
+
+                *dst = data;
+                return 1;
            }
 #endif
            break;
@@ -3008,12 +2991,12 @@ redis_unpack(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret)

                /* We must have at least enough bytes for our header, and can't have more than
                 * INT_MAX + our header size. */
-                if (val_len < REDIS_LZ4_HDR_SIZE || val_len > INT_MAX + REDIS_LZ4_HDR_SIZE)
+                if (len < REDIS_LZ4_HDR_SIZE || len > INT_MAX + REDIS_LZ4_HDR_SIZE)
                    break;

                /* Operate on copies in case our CRC fails */
-                const char *copy = val;
-                size_t copylen = val_len;
+                const char *copy = src;
+                size_t copylen = len;

                /* Read in our header bytes */
                memcpy(&lz4crc, copy, sizeof(uint8_t));
@@ -3028,23 +3011,59 @@ redis_unpack(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret)
                /* Finally attempt decompression */
                data = emalloc(datalen);
                if (LZ4_decompress_safe(copy, data, copylen, datalen) > 0) {
-                    if (redis_unserialize(redis_sock, data, datalen, z_ret) == 0) {
-                        ZVAL_STRINGL(z_ret, data, datalen);
-                    }
-                    efree(data);
+                    *dst = data;
+                    *dstlen = datalen;
                    return 1;
                }
+
                efree(data);
            }
 #endif
            break;
    }
-    return redis_unserialize(redis_sock, val, val_len, z_ret);
+
+    *dst = (char*)src;
+    *dstlen = len;
+    return 0;
 }

 PHP_REDIS_API int
-redis_serialize(RedisSock *redis_sock, zval *z, char **val, size_t *val_len
-               )
+redis_pack(RedisSock *redis_sock, zval *z, char **val, size_t *val_len) {
+    size_t tmplen;
+    int tmpfree;
+    char *tmp;
+
+    /* First serialize */
+    tmpfree = redis_serialize(redis_sock, z, &tmp, &tmplen);
+
+    /* Now attempt compression */
+    if (redis_compress(redis_sock, val, val_len, tmp, tmplen)) {
+        if (tmpfree) efree(tmp);
+        return 1;
+    }
+
+    return tmpfree;
+}
+
+PHP_REDIS_API int
+redis_unpack(RedisSock *redis_sock, const char *src, int srclen, zval *zdst) {
+    size_t len;
+    char *buf;
+
+    /* Uncompress, then unserialize */
+    if (redis_uncompress(redis_sock, &buf, &len, src, srclen)) {
+        if (!redis_unserialize(redis_sock, buf, len, zdst)) {
+            ZVAL_STRINGL(zdst, buf, len);
+        }
+        efree(buf);
+        return 1;
+    }
+
+    return redis_unserialize(redis_sock, buf, len, zdst);
+}
+
+PHP_REDIS_API int
+redis_serialize(RedisSock *redis_sock, zval *z, char **val, size_t *val_len)
 {
    php_serialize_data_t ht;

--- a/library.h
+++ b/library.h
@@ -121,6 +121,11 @@ redis_key_prefix(RedisSock *redis_sock, char **key, size_t *key_len);
 PHP_REDIS_API int
 redis_unserialize(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret);

+PHP_REDIS_API int
+redis_compress(RedisSock *redis_sock, char **dst, size_t *dstlen, char *buf, size_t len);
+PHP_REDIS_API int
+redis_uncompress(RedisSock *redis_sock, char **dst, size_t *dstlen, const char *src, size_t len);
+
 PHP_REDIS_API int redis_pack(RedisSock *redis_sock, zval *z, char **val, size_t *val_len);
 PHP_REDIS_API int redis_unpack(RedisSock *redis_sock, const char *val, int val_len, zval *z_ret);

--- a/php_redis.h
+++ b/php_redis.h
@@ -165,9 +165,15 @@ PHP_METHOD(Redis, role);
 PHP_METHOD(Redis, getLastError);
 PHP_METHOD(Redis, clearLastError);
 PHP_METHOD(Redis, _prefix);
+PHP_METHOD(Redis, _pack);
+PHP_METHOD(Redis, _unpack);
+
 PHP_METHOD(Redis, _serialize);
 PHP_METHOD(Redis, _unserialize);

+PHP_METHOD(Redis, _compress);
+PHP_METHOD(Redis, _uncompress);
+
 PHP_METHOD(Redis, mset);
 PHP_METHOD(Redis, msetnx);
 PHP_METHOD(Redis, rpoplpush);
--- a/redis.c
+++ b/redis.c
@@ -286,6 +286,10 @@ static zend_function_entry redis_functions[] = {
     PHP_ME(Redis, _prefix, arginfo_key, ZEND_ACC_PUBLIC)
     PHP_ME(Redis, _serialize, arginfo_value, ZEND_ACC_PUBLIC)
     PHP_ME(Redis, _unserialize, arginfo_value, ZEND_ACC_PUBLIC)
+     PHP_ME(Redis, _pack, arginfo_value, ZEND_ACC_PUBLIC)
+     PHP_ME(Redis, _unpack, arginfo_value, ZEND_ACC_PUBLIC)
+     PHP_ME(Redis, _compress, arginfo_value, ZEND_ACC_PUBLIC)
+     PHP_ME(Redis, _uncompress, arginfo_value, ZEND_ACC_PUBLIC)
     PHP_ME(Redis, acl, arginfo_acl, ZEND_ACC_PUBLIC)
     PHP_ME(Redis, append, arginfo_key_value, ZEND_ACC_PUBLIC)
     PHP_ME(Redis, auth, arginfo_auth, ZEND_ACC_PUBLIC)
@@ -3294,6 +3298,51 @@ PHP_METHOD(Redis, _unserialize) {
        redis_exception_ce);
 }

+PHP_METHOD(Redis, _compress) {
+    RedisSock *redis_sock;
+
+    // Grab socket
+    if ((redis_sock = redis_sock_get_instance(getThis(), 0)) == NULL) {
+        RETURN_FALSE;
+    }
+
+    redis_compress_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock);
+}
+
+PHP_METHOD(Redis, _uncompress) {
+    RedisSock *redis_sock;
+
+    // Grab socket
+    if ((redis_sock = redis_sock_get_instance(getThis(), 0)) == NULL) {
+        RETURN_FALSE;
+    }
+
+    redis_uncompress_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock,
+        redis_exception_ce);
+}
+
+PHP_METHOD(Redis, _pack) {
+    RedisSock *redis_sock;
+
+    // Grab socket
+    if ((redis_sock = redis_sock_get_instance(getThis(), 0)) == NULL) {
+        RETURN_FALSE;
+    }
+
+    redis_pack_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock);
+}
+
+PHP_METHOD(Redis, _unpack) {
+    RedisSock *redis_sock;
+
+    // Grab socket
+    if ((redis_sock = redis_sock_get_instance(getThis(), 0)) == NULL) {
+        RETURN_FALSE;
+    }
+
+    redis_unpack_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock);
+}
+
 /* {{{ proto Redis::getLastError() */
 PHP_METHOD(Redis, getLastError) {
    zval *object;
--- a/redis_cluster.c
+++ b/redis_cluster.c
@@ -110,6 +110,10 @@ zend_function_entry redis_cluster_functions[] = {
    PHP_ME(RedisCluster, _redir, arginfo_void, ZEND_ACC_PUBLIC)
    PHP_ME(RedisCluster, _serialize, arginfo_value, ZEND_ACC_PUBLIC)
    PHP_ME(RedisCluster, _unserialize, arginfo_value, ZEND_ACC_PUBLIC)
+    PHP_ME(RedisCluster, _compress, arginfo_value, ZEND_ACC_PUBLIC)
+    PHP_ME(RedisCluster, _uncompress, arginfo_value, ZEND_ACC_PUBLIC)
+    PHP_ME(RedisCluster, _pack, arginfo_value, ZEND_ACC_PUBLIC)
+    PHP_ME(RedisCluster, _unpack, arginfo_value, ZEND_ACC_PUBLIC)
    PHP_ME(RedisCluster, acl, arginfo_acl_cl, ZEND_ACC_PUBLIC)
    PHP_ME(RedisCluster, append, arginfo_key_value, ZEND_ACC_PUBLIC)
    PHP_ME(RedisCluster, bgrewriteaof, arginfo_key_or_address, ZEND_ACC_PUBLIC)
@@ -1970,6 +1974,27 @@ PHP_METHOD(RedisCluster, _unserialize) {
 }
 /* }}} */

+PHP_METHOD(RedisCluster, _compress) {
+    redisCluster *c = GET_CONTEXT();
+    redis_compress_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, c->flags);
+}
+
+PHP_METHOD(RedisCluster, _uncompress) {
+    redisCluster *c = GET_CONTEXT();
+    redis_uncompress_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, c->flags,
+                             redis_cluster_exception_ce);
+}
+
+PHP_METHOD(RedisCluster, _pack) {
+    redisCluster *c = GET_CONTEXT();
+    redis_pack_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, c->flags);
+}
+
+PHP_METHOD(RedisCluster, _unpack) {
+    redisCluster *c = GET_CONTEXT();
+    redis_unpack_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, c->flags);
+}
+
 /* {{{ proto array RedisCluster::_masters() */
 PHP_METHOD(RedisCluster, _masters) {
    redisCluster *c = GET_CONTEXT();
--- a/redis_cluster.h
+++ b/redis_cluster.h
@@ -13,7 +13,7 @@
    redis_##name##_cmd(INTERNAL_FUNCTION_PARAM_PASSTHRU, c->flags, &cmd, \
                       &cmd_len, &slot)

-/* Append information required to handle MULTI commands to the tail of our MULTI 
+/* Append information required to handle MULTI commands to the tail of our MULTI
 * linked list. */
 #define CLUSTER_ENQUEUE_RESPONSE(c, slot, cb, ctx) \
    clusterFoldItem *_item; \
@@ -69,8 +69,8 @@
        CLUSTER_ENQUEUE_RESPONSE(c, slot, resp_func, ctx); \
        RETURN_ZVAL(getThis(), 1, 0); \
    } \
-    resp_func(INTERNAL_FUNCTION_PARAM_PASSTHRU, c, ctx); 
-        
+    resp_func(INTERNAL_FUNCTION_PARAM_PASSTHRU, c, ctx);
+
 /* More generic processing, where only the keyword differs */
 #define CLUSTER_PROCESS_KW_CMD(kw, cmdfunc, resp_func, readcmd) \
    redisCluster *c = GET_CONTEXT(); \
@@ -89,7 +89,7 @@
        CLUSTER_ENQUEUE_RESPONSE(c, slot, resp_func, ctx); \
        RETURN_ZVAL(getThis(), 1, 0); \
    } \
-    resp_func(INTERNAL_FUNCTION_PARAM_PASSTHRU, c, ctx); 
+    resp_func(INTERNAL_FUNCTION_PARAM_PASSTHRU, c, ctx);

 /* Create cluster context */
 zend_object *create_cluster_context(zend_class_entry *class_type);
@@ -293,6 +293,10 @@ PHP_METHOD(RedisCluster, setoption);
 PHP_METHOD(RedisCluster, _prefix);
 PHP_METHOD(RedisCluster, _serialize);
 PHP_METHOD(RedisCluster, _unserialize);
+PHP_METHOD(RedisCluster, _compress);
+PHP_METHOD(RedisCluster, _uncompress);
+PHP_METHOD(RedisCluster, _pack);
+PHP_METHOD(RedisCluster, _unpack);
 PHP_METHOD(RedisCluster, _masters);
 PHP_METHOD(RedisCluster, _redir);

--- a/redis_commands.c
+++ b/redis_commands.c
@@ -4510,4 +4510,67 @@ void redis_unserialize_handler(INTERNAL_FUNCTION_PARAMETERS,
    RETURN_ZVAL(&z_ret, 0, 0);
 }

+void redis_compress_handler(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock) {
+    zend_string *zstr;
+    size_t len;
+    char *buf;
+    int cmp_free;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &zstr) == FAILURE) {
+        RETURN_FALSE;
+    }
+
+    cmp_free = redis_compress(redis_sock, &buf, &len, ZSTR_VAL(zstr), ZSTR_LEN(zstr));
+    RETVAL_STRINGL(buf, len);
+    if (cmp_free) efree(buf);
+}
+
+void redis_uncompress_handler(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
+                              zend_class_entry *ex)
+{
+    zend_string *zstr;
+    size_t len;
+    char *buf;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &zstr) == FAILURE) {
+        RETURN_FALSE;
+    } else if (ZSTR_LEN(zstr) == 0 || redis_sock->compression == REDIS_COMPRESSION_NONE) {
+        RETURN_STR_COPY(zstr);
+    }
+
+    if (!redis_uncompress(redis_sock, &buf, &len, ZSTR_VAL(zstr), ZSTR_LEN(zstr))) {
+        zend_throw_exception(ex, "Invalid compressed data or uncompression error", 0);
+        RETURN_FALSE;
+    }
+
+    RETVAL_STRINGL(buf, len);
+    efree(buf);
+}
+
+void redis_pack_handler(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock) {
+    int valfree;
+    size_t len;
+    char *val;
+    zval *zv;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &zv) == FAILURE) {
+        RETURN_FALSE;
+    }
+
+    valfree = redis_pack(redis_sock, zv, &val, &len);
+    RETVAL_STRINGL(val, len);
+    if (valfree) efree(val);
+}
+
+void redis_unpack_handler(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock) {
+    zend_string *str;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &str) == FAILURE) {
+        RETURN_FALSE;
+    }
+
+    if (redis_unpack(redis_sock, ZSTR_VAL(str), ZSTR_LEN(str), return_value) == 0) {
+        RETURN_STR_COPY(str);
+    }
+}
 /* vim: set tabstop=4 softtabstop=4 expandtab shiftwidth=4: */
--- a/redis_commands.h
+++ b/redis_commands.h
@@ -52,7 +52,7 @@ int redis_kv_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
    char *kw, char **cmd, int *cmd_len, short *slot, void **ctx);

 int redis_key_str_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
-    char *kw, char **cmd, int *cmd_len, short *slot, void **ctx);     
+    char *kw, char **cmd, int *cmd_len, short *slot, void **ctx);

 int redis_key_key_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
    char *kw, char **cmd, int *cmd_len, short *slot, void **ctx);
@@ -96,11 +96,11 @@ typedef int (*zrange_cb)(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
                         char *,char**,int*,int*,short*,void**);

 int redis_zrange_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
-    char *kw, char **cmd, int *cmd_len, int *withscores, short *slot, 
+    char *kw, char **cmd, int *cmd_len, int *withscores, short *slot,
    void **ctx);

 int redis_zrangebyscore_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
-    char *kw, char **cmd, int *cmd_len, int *withscores, short *slot, 
+    char *kw, char **cmd, int *cmd_len, int *withscores, short *slot,
    void **ctx);

 int redis_zdiff_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
@@ -143,7 +143,7 @@ int redis_georadiusbymember_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_s
    char *kw, char **cmd, int *cmd_len, short *slot, void **ctx);

 /* Commands which need a unique construction mechanism.  This is either because
- * they don't share a signature with any other command, or because there is 
+ * they don't share a signature with any other command, or because there is
 * specific processing we do (e.g. verifying subarguments) that make them
 * unique */

@@ -174,7 +174,7 @@ int redis_hmset_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
 int redis_hstrlen_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
    char **cmd, int *cmd_len, short *slot, void **ctx);

-int redis_bitop_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock, 
+int redis_bitop_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
    char **cmd, int *cmd_len, short *slot, void **ctx);

 int redis_bitcount_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
@@ -313,21 +313,28 @@ int redis_sentinel_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
 int redis_sentinel_str_cmd(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
    char *kw, char **cmd, int *cmd_len, short *slot, void **ctx);

-/* Commands that don't communicate with Redis at all (such as getOption, 
+/* Commands that don't communicate with Redis at all (such as getOption,
 * setOption, _prefix, _serialize, etc).  These can be handled in one place
- * with the method of grabbing our RedisSock* object in different ways 
+ * with the method of grabbing our RedisSock* object in different ways
 * depending if this is a Redis object or a RedisCluster object. */

-void redis_getoption_handler(INTERNAL_FUNCTION_PARAMETERS, 
+void redis_getoption_handler(INTERNAL_FUNCTION_PARAMETERS,
    RedisSock *redis_sock, redisCluster *c);
-void redis_setoption_handler(INTERNAL_FUNCTION_PARAMETERS, 
+void redis_setoption_handler(INTERNAL_FUNCTION_PARAMETERS,
    RedisSock *redis_sock, redisCluster *c);
-void redis_prefix_handler(INTERNAL_FUNCTION_PARAMETERS, 
+void redis_prefix_handler(INTERNAL_FUNCTION_PARAMETERS,
    RedisSock *redis_sock);
-void redis_serialize_handler(INTERNAL_FUNCTION_PARAMETERS, 
+void redis_serialize_handler(INTERNAL_FUNCTION_PARAMETERS,
    RedisSock *redis_sock);
-void redis_unserialize_handler(INTERNAL_FUNCTION_PARAMETERS, 
+void redis_unserialize_handler(INTERNAL_FUNCTION_PARAMETERS,
    RedisSock *redis_sock, zend_class_entry *ex);
+void redis_compress_handler(INTERNAL_FUNCTION_PARAMETERS,
+    RedisSock *redis_sock);
+void redis_uncompress_handler(INTERNAL_FUNCTION_PARAMETERS,
+    RedisSock *redis_sock, zend_class_entry *ex);
+
+void redis_pack_handler(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock);
+void redis_unpack_handler(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock);

 #endif

--- a/tests/RedisTest.php
+++ b/tests/RedisTest.php
@@ -5089,6 +5089,71 @@ class Redis_Test extends TestSuite
        }
    }

+    public function testCompressHelpers() {
+        $compressors = self::getAvailableCompression();
+
+        $vals = ['foo', 12345, random_bytes(128), ''];
+
+        $oldcmp = $this->redis->getOption(Redis::OPT_COMPRESSION);
+
+        foreach ($compressors as $cmp) {
+            foreach ($vals as $val) {
+                $this->redis->setOption(Redis::OPT_COMPRESSION, $cmp);
+                $this->redis->set('cmpkey', $val);
+
+                /* Get the value raw */
+                $this->redis->setOption(Redis::OPT_COMPRESSION, Redis::COMPRESSION_NONE);
+                $raw = $this->redis->get('cmpkey');
+                $this->redis->setOption(Redis::OPT_COMPRESSION, $cmp);
+
+                $this->assertEquals($raw, $this->redis->_compress($val));
+
+                $uncompressed = $this->redis->get('cmpkey');
+                $this->assertEquals($uncompressed, $this->redis->_uncompress($raw));
+            }
+        }
+
+        $this->redis->setOption(Redis::OPT_COMPRESSION, $oldcmp);
+    }
+
+    public function testPackHelpers() {
+        list ($oldser, $oldcmp) = [
+            $this->redis->getOption(Redis::OPT_SERIALIZER),
+            $this->redis->getOption(Redis::OPT_COMPRESSION)
+        ];
+
+        foreach ($this->serializers as $ser) {
+            $compressors = self::getAvailableCompression();
+            foreach ($compressors as $cmp) {
+                $this->redis->setOption(Redis::OPT_SERIALIZER, $ser);
+                $this->redis->setOption(Redis::OPT_COMPRESSION, $cmp);
+
+		foreach (['foo', 12345, random_bytes(128), '', ['an', 'array']] as $v) {
+                    /* Can only attempt the array if we're serializing */
+                    if (is_array($v) && $ser == Redis::SERIALIZER_NONE)
+                        continue;
+
+                    $this->redis->set('packkey', $v);
+
+                    /* Get the value raw */
+                    $this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);
+                    $this->redis->setOption(Redis::OPT_COMPRESSION, Redis::COMPRESSION_NONE);
+                    $raw = $this->redis->get('packkey');
+                    $this->redis->setOption(Redis::OPT_SERIALIZER, $ser);
+                    $this->redis->setOption(Redis::OPT_COMPRESSION, $cmp);
+
+                    $this->assertEquals($raw, $this->redis->_pack($v));
+
+                    $unpacked = $this->redis->get('packkey');
+		    $this->assertEquals($unpacked, $this->redis->_unpack($raw));
+		}
+	    }
+        }
+
+        $this->redis->setOption(Redis::OPT_SERIALIZER, $oldser);
+        $this->redis->setOption(Redis::OPT_COMPRESSION, $oldcmp);
+    }
+
    public function testPrefix() {
        // no prefix
        $this->redis->setOption(Redis::OPT_PREFIX, '');
--- a/tests/TestSuite.php
+++ b/tests/TestSuite.php
@@ -39,6 +39,18 @@ class TestSuite
    public function getPort() { return $this->i_port; }
    public function getAuth() { return $this->auth; }

+    public static function getAvailableCompression() {
+        $result[] = Redis::COMPRESSION_NONE;
+        if (defined('Redis::COMPRESSION_LZF'))
+            $result[] = Redis::COMPRESSION_LZF;
+        if (defined('Redis::COMPRESSION_LZ4'))
+            $result[] = Redis::COMPRESSION_LZ4;
+        if (defined('Redis::COMPRESSION_ZSTD'))
+            $result[] = Redis::COMPRESSION_ZSTD;
+
+        return $result;
+    }
+
    /**
     * Returns the fully qualified host path,
     * which may be used directly for php.ini parameters like session.save_path