预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

允许在 mysql_connect() 函数和 mysql_pconnect() 函数中指定更多的客户端标记。下面列出所定义的常量：

**MySQL 客户端常量**
常量	说明
`MYSQL_CLIENT_COMPRESS`	使用压缩的通讯协议
`MYSQL_CLIENT_IGNORE_SPACE`	允许在函数名后留空格位
`MYSQL_CLIENT_INTERACTIVE`	允许设置断开连接之前所空闲等候的 interactive_timeout 时间（代替 wait_timeout）。
`MYSQL_CLIENT_SSL`	使用 SSL 加密。本标志仅在 MySQL 客户端库版本为 4.x 或更高版本时可用。在 PHP 4 和 Windows 版的 PHP 5 安装包中绑定的都是 3.23.x。

mysql_fetch_array() 函数使用一个常量来表示所返回数组的类型。下面是常量的定义：

**MySQL fetch 常量**
常量	说明
`MYSQL_ASSOC`	返回的数据列使用字段名作为数组的索引名。
`MYSQL_BOTH`	返回的数据列使用字段名及数字索引作为数组的索引名。
`MYSQL_NUM`	返回的数据列使用数字索引作为数组的索引名。索引从 0 开始，表示返回结果的第一个字段。

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User Contributed Notes 3 notes

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pcdinh at phpvietnam dot net ¶

14 years ago


Other client flags extracted from MySQL client source

#define CLIENT_LONG_PASSWORD 1 /* new more secure passwords */
#define CLIENT_FOUND_ROWS 2 /* Found instead of affected rows */
#define CLIENT_LONG_FLAG 4 /* Get all column flags */
#define CLIENT_CONNECT_WITH_DB 8 /* One can specify db on connect */
#define CLIENT_NO_SCHEMA 16 /* Don't allow database.table.column */
#define CLIENT_COMPRESS 32 /* Can use compression protocol */
#define CLIENT_ODBC 64 /* Odbc client */
#define CLIENT_LOCAL_FILES 128 /* Can use LOAD DATA LOCAL */
#define CLIENT_IGNORE_SPACE 256 /* Ignore spaces before '(' */
#define CLIENT_PROTOCOL_41 512 /* New 4.1 protocol */
#define CLIENT_INTERACTIVE 1024 /* This is an interactive client */
#define CLIENT_SSL 2048 /* Switch to SSL after handshake */
#define CLIENT_IGNORE_SIGPIPE 4096 /* IGNORE sigpipes */
#define CLIENT_TRANSACTIONS 8192 /* Client knows about transactions */
#define CLIENT_RESERVED 16384 /* Old flag for 4.1 protocol */
#define CLIENT_SECURE_CONNECTION 32768 /* New 4.1 authentication */
#define CLIENT_MULTI_STATEMENTS 65536 /* Enable/disable multi-stmt support */
#define CLIENT_MULTI_RESULTS 131072 /* Enable/disable multi-results */
#define CLIENT_REMEMBER_OPTIONS (((ulong) 1) << 31)

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frak at gingerhq dot net ¶

13 years ago


If you're using stored procedures and mysql_error() returns "PROCEDURE storedProcedureName can't return a result set in the given context", you need to pass an additional flag (CLIENT_MULTI_RESULTS) to mysql_connect() as such:
mysql_connect($hostname, $username, $password, true, 131072);

Some other sources say that you should use 65536. 65536 is actually the flag to allow multiple statements in a single mysql_query(), and is a security issue. The reason it allows you to receive results from stored procedures is because it implies 131072. To be safe, use 131072 over 65536.

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-1

Contact at LinuxIntro dot com ¶

16 years ago


When you connect and expect to use a stored procedure,you must pass a special flag to MySQL via the connect command, otherwise you will not get the results returned, and it will result in this error:
PROCEDURE AlexGrim.GetStats_ForumCategories can't return a result set in the given context

To fix this, change you connection string, adding ",false,65536" as the last 2 fields:
$this->con = mysql_connect($this->h,$this->u,$this->p,false,65536);

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