Original MySQL API (
Mysql
)
2292
also
MySQL: choosing an API
guide and
related FAQ
for more information.
Alternatives to this function include:
mysqli_connect
with
p:
host prefix
PDO::__construct
with
PDO::ATTR_PERSISTENT
as a driver option
Description
resource mysql_pconnect(
string server
= =ini_get("mysql.default_host"),
string username
= =ini_get("mysql.default_user"),
string password
= =ini_get("mysql.default_password"),
int client_flags
= =0);
Establishes a persistent connection to a MySQL server.
mysql_pconnect
acts very much like
mysql_connect
with two major differences.
First, when connecting, the function would first try to find a (persistent) link that's already open with
the same host, username and password. If one is found, an identifier for it will be returned instead of
opening a new connection.
Second, the connection to the SQL server will not be closed when the execution of the script ends.
Instead, the link will remain open for future use (
mysql_close
will not close links established by
mysql_pconnect
).
This type of link is therefore called 'persistent'.
Parameters
server
The MySQL server. It can also include a port number. e.g.
"hostname:port" or a path to a local socket e.g. ":/path/to/socket" for
the localhost.
If the PHP directive
mysql.default_host
is undefined (default), then
the default value is 'localhost:3306'
username
The username. Default value is the name of the user that owns the
server process.
password
The password. Default value is an empty password.
client_flags
The
client_flags
parameter can be a combination
of the following constants: 128 (enable
LOAD
DATA LOCAL
handling),
MYSQL_CLIENT_SSL
,
MYSQL_CLIENT_COMPRESS
,
MYSQL_CLIENT_IGNORE_SPACE
or
MYSQL_CLIENT_INTERACTIVE
.
Return Values
Returns a MySQL persistent link identifier on success, or
FALSE
on failure.
Changelog
Version
Description
5.5.0
This function will generate an
E_DEPRECATED
error.
4.3.0
Added the
client_flags
parameter.
Содержание 5.0
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