PHP 5.5.17 is available

Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

Since PHP 4.3.0 it is possible to specify additional client flags for the mysql_connect() and mysql_pconnect() functions. The following constants are defined:

MySQL client constants
Constant Description
MYSQL_CLIENT_COMPRESS Use compression protocol
MYSQL_CLIENT_IGNORE_SPACE Allow space after function names
MYSQL_CLIENT_INTERACTIVE Allow interactive_timeout seconds (instead of wait_timeout ) of inactivity before closing the connection.
MYSQL_CLIENT_SSL Use SSL encryption. This flag is only available with version 4.x of the MySQL client library or newer. Version 3.23.x is bundled both with PHP 4 and Windows binaries of PHP 5.

The function mysql_fetch_array() uses a constant for the different types of result arrays. The following constants are defined:

MySQL fetch constants
Constant Description
MYSQL_ASSOC Columns are returned into the array having the fieldname as the array index.
MYSQL_BOTH Columns are returned into the array having both a numerical index and the fieldname as the array index.
MYSQL_NUM Columns are returned into the array having a numerical index to the fields. This index starts with 0, the first field in the result.

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User Contributed Notes 3 notes

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7
pcdinh at phpvietnam dot net
4 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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2
frak at gingerhq dot net
3 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
5 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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