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getSession

getSession

Connect to a MySQL server

mysql_xdevapi\Session **mysql_xdevapi\getSession** string $uri

Connects to the MySQL server.

uri The URI to the MySQL server, such as . mysqlx://user:password@host

URI format:

 `scheme://[user[:[password]]@]target[:port][?attribute1=value1&attribute2=value2...`
  • : required, the connection protocolscheme In mysql_xdevapi it is always 'mysqlx' (for X Protocol)
  • : optional, the MySQL user account for authenticationuser
  • : optional, the MySQL user's password for authenticationpassword
  • : required, the server instance the connection refers to:target * TCP connection (host name, IPv4 address, or IPv6 address) * Unix socket path (local file path) * Windows named-pipe (local file path)
  • : optional, network port of MySQL server.port by default port for X Protocol is 33060
  • : this element is optional and specifies a data dictionary that contains different options, including: ?attribute=value - The (authentication mechanism) attribute as it relates to encrypted connections. For additional information, see . The following 'auth' values are supported: , , , and . authCommand Options for Encrypted Connectionsplain``mysql41``external``sha256_mem - The attribute affects the connection and not subsequent operations. It is set per connection whether on a single or multiple hosts. connect-timeout Pass in a positive integer to define the connection timeout in seconds, or pass in 0 (zero) to disable the timeout (infinite). Not defining connect-timeout uses the default value of 10. Related, the MYSQLX_CONNECTION_TIMEOUT (timeout in seconds) and MYSQLX_TEST_CONNECTION_TIMEOUT (used while running tests) environment variables can be set and used instead of connect-timeout in the URI. The connect-timeout URI option has precedence over these environment variables. - The optional attribute accepts these values: (client negotiates with server to find a supported algorithm; connection is uncompressed if a mutually supported algorithm is not found), (like "preferred", but connection is terminated if a mutually supported algorithm is not found), or (connection is uncompressed). Defaults to . compression``preferred``required``disabled``preferred This option was added in version 8.0.20. - The optional attribute defines the desired compression algorithms (and their preferred usage order): (alias: zstd), (alias: lz4), or (aliases: deflate or zlib). By default, the order used (depending on system availability) is lz4_message, zstd_stream, then deflate_stream. For example, passing in compression-algorithms=[lz4,zstd_stream] uses lz4 if it's available, otherwise zstd_stream is used. If both are unavailable then behavior depends on the compression value e.g., if compression=required then it'll fail with an error. compression-algorithms``zstd_stream``lz4_message``deflate_stream This option was added in version 8.0.22.

Voorbeeld: URI examples

mysqlx://foobar
mysqlx://root@localhost?socket=%2Ftmp%2Fmysqld.sock%2F
mysqlx://foo:bar@localhost:33060
mysqlx://foo:bar@localhost:33160?ssl-mode=disabled
mysqlx://foo:bar@localhost:33260?ssl-mode=required
mysqlx://foo:bar@localhost:33360?ssl-mode=required&auth=mysql41
mysqlx://foo:bar@(/path/to/socket)
mysqlx://foo:bar@(/path/to/socket)?auth=sha256_mem
mysqlx://foo:bar@[localhost:33060, 127.0.0.1:33061]
mysqlx://foobar?ssl-ca=(/path/to/ca.pem)&ssl-crl=(/path/to/crl.pem)
mysqlx://foo:bar@[localhost:33060, 127.0.0.1:33061]?ssl-mode=disabled
mysqlx://foo:bar@localhost:33160/?connect-timeout=0
mysqlx://foo:bar@localhost:33160/?connect-timeout=10&compression=required
mysqlx://foo:bar@localhost:33160/?connect-timeout=10&compression=required&compression-algorithms=[lz4,zstd_stream]

For related information, see MySQL Shell's
.

Connecting using a URI String

A object. Session

A connection failure throws an . Exception

Voorbeeld: example

<?php
try {
    $session = mysql_xdevapi\getSession("mysqlx://user:password@host");
} catch(Exception $e) {
    die("Connection could not be established: " . $e->getMessage());
}

$schemas = $session->getSchemas();
print_r($schemas);

$mysql_version = $session->getServerVersion();
print_r($mysql_version);

var_dump($collection->find("name = 'Alfred'")->execute()->fetchOne());
?>

Array
(
    [0] => mysql_xdevapi\Schema Object
        (
            [name] => helloworld
        )
    [1] => mysql_xdevapi\Schema Object
        (
            [name] => information_schema
        )
    [2] => mysql_xdevapi\Schema Object
        (
            [name] => mysql
        )
    [3] => mysql_xdevapi\Schema Object
        (
            [name] => performance_schema
        )
    [4] => mysql_xdevapi\Schema Object
        (
            [name] => sys
        )
)

80012

array(4) {
  ["_id"]=>
  string(28) "00005ad66abf0001000400000003"
  ["age"]=>
  int(42)
  ["job"]=>
  string(7) "Butler"
  ["name"]=>
  string(4) "Alfred"
}
Vorige ← expression

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