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MysqlndUhConnection::queryReadResultsetHeader
647
0 => NULL,
1 => 'SELECT \'Welcome mysqlnd_uh!\' FROM DUAL',
))
proxy::query returns true
array(1) {
["How about query rewriting?"]=>
string(26) "How about query rewriting?"
}
See Also
mysqlnd_uh_set_connection_proxy
mysqli_query
mysql_query
9.7.31 MysqlndUhConnection::queryReadResultsetHeader
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::queryReadResultsetHeader
Read a result set header
Description
public bool MysqlndUhConnection::queryReadResultsetHeader(
mysqlnd_connection connection,
mysqlnd_statement mysqlnd_stmt);
Read a result set header.
Parameters
connection
Mysqlnd connection handle. Do not modify!
mysqlnd_stmt
Mysqlnd statement handle. Do not modify! Set to NULL, if function is not
used in the context of a prepared statement.
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.38 MysqlndUhConnection::queryReadResultsetHeader example
<?php
class proxy extends MysqlndUhConnection {
public function queryReadResultsetHeader($res, $stmt) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::queryReadResultsetHeader($res, $stmt);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
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MysqlndUhConnection::reapQuery
648
$res = $mysqli->query("SELECT 'Welcome mysqlnd_uh!' FROM DUAL");
var_dump($res->fetch_assoc());
?>
The above example will output:
proxy::queryReadResultsetHeader(array (
0 => NULL,
1 => NULL,
))
proxy::queryReadResultsetHeader returns true
array(1) {
["Welcome mysqlnd_uh!"]=>
string(19) "Welcome mysqlnd_uh!"
}
See Also
mysqlnd_uh_set_connection_proxy
9.7.32 MysqlndUhConnection::reapQuery
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::reapQuery
Get result from async query
Description
public bool MysqlndUhConnection::reapQuery(
mysqlnd_connection connection);
Get result from async query.
Parameters
connection
Mysqlnd connection handle. Do not modify!
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.39 MysqlndUhConnection::reapQuery example
<?php
class proxy extends MysqlndUhConnection {
public function reapQuery($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::reapQuery($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
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MysqlndUhConnection::reapQuery
649
}
mysqlnd_uh_set_connection_proxy(new proxy());
$conn1 = new mysqli("localhost", "root", "", "test");
$conn2 = new mysqli("localhost", "root", "", "test");
$conn1->query("SELECT 1 as 'one', SLEEP(1) AS _sleep FROM DUAL", MYSQLI_ASYNC |  MYSQLI_USE_RESULT);
$conn2->query("SELECT 1.1 as 'one dot one' FROM DUAL", MYSQLI_ASYNC |  MYSQLI_USE_RESULT);
$links = array(
$conn1->thread_id => array('link' => $conn1, 'processed' => false),
$conn2->thread_id => array('link' => $conn2, 'processed' => false)
);
$saved_errors = array();
do {
$poll_links = $poll_errors = $poll_reject = array();
foreach ($links as $thread_id => $link) {
if (!$link['processed']) {
$poll_links[] = $link['link'];
$poll_errors[] = $link['link'];
$poll_reject[] = $link['link'];
}
}
if (0 == count($poll_links))
break;
if (0 == ($num_ready = mysqli_poll($poll_links, $poll_errors, $poll_reject, 0, 200000)))
continue;
if (!empty($poll_errors)) {
die(var_dump($poll_errors));
}
foreach ($poll_links as $link) {
$thread_id = mysqli_thread_id($link);
$links[$thread_id]['processed'] = true;
if (is_object($res = mysqli_reap_async_query($link))) {
// result set object
while ($row = mysqli_fetch_assoc($res)) {
// eat up all results
var_dump($row);
}
mysqli_free_result($res);
} else {
// either there is no result (no SELECT) or there is an error
if (mysqli_errno($link) > 0) {
$saved_errors[$thread_id] = mysqli_errno($link);
printf("'%s' caused %d\n", $links[$thread_id]['query'],     mysqli_errno($link));
}
}
}
} while (true);
?>
The above example will output:
proxy::reapQuery(array (
0 => NULL,
))
proxy::reapQuery returns true
array(1) {
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MysqlndUhConnection::refreshServer
650
["one dot one"]=>
string(3) "1.1"
}
proxy::reapQuery(array (
0 => NULL,
))
proxy::reapQuery returns true
array(2) {
["one"]=>
string(1) "1"
["_sleep"]=>
string(1) "0"
}
See Also
mysqlnd_uh_set_connection_proxy
mysqli_real_async_query
9.7.33 MysqlndUhConnection::refreshServer
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::refreshServer
Flush or reset tables and caches
Description
public bool MysqlndUhConnection::refreshServer(
mysqlnd_connection connection,
int options);
Flush or reset tables and caches.
Warning
This function is currently not documented; only its argument list is available.
Parameters
connection
Mysqlnd connection handle. Do not modify!
options
What to refresh.
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.40 MysqlndUhConnection::refreshServer example
<?php
class proxy extends MysqlndUhConnection {
public function refreshServer($res, $option) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::refreshServer($res, $option);
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MysqlndUhConnection::restartPSession
651
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
mysqli_refresh($mysqli, 1);
?>
The above example will output:
proxy::refreshServer(array (
0 => NULL,
1 => 1,
))
proxy::refreshServer returns false
See Also
mysqlnd_uh_set_connection_proxy
9.7.34 MysqlndUhConnection::restartPSession
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::restartPSession
Restart a persistent mysqlnd connection
Description
public bool MysqlndUhConnection::restartPSession(
mysqlnd_connection connection);
Restart a persistent mysqlnd connection.
Parameters
connection
Mysqlnd connection handle. Do not modify!
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.41 MysqlndUhConnection::restartPSession example
<?php
class proxy extends MysqlndUhConnection {
public function ping($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::ping($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
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MysqlndUhConnection::selectDb
652
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->ping();
?>
The above example will output:
proxy::restartPSession(array (
0 => NULL,
))
proxy::restartPSession returns true
See Also
mysqlnd_uh_set_connection_proxy
9.7.35 MysqlndUhConnection::selectDb
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::selectDb
Selects the default database for database queries
Description
public bool MysqlndUhConnection::selectDb(
mysqlnd_connection connection,
string database);
Selects the default database for database queries.
Parameters
connection
Mysqlnd connection handle. Do not modify!
database
The database name.
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.42 MysqlndUhConnection::selectDb example
<?php
class proxy extends MysqlndUhConnection {
public function selectDb($res, $database) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::selectDb($res, $database);
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MysqlndUhConnection::sendClose
653
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->select_db("mysql");
?>
The above example will output:
proxy::selectDb(array (
0 => NULL,
1 => 'mysql',
))
proxy::selectDb returns true
See Also
mysqlnd_uh_set_connection_proxy
mysqli_select_db
mysql_select_db
9.7.36 MysqlndUhConnection::sendClose
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::sendClose
Sends a close command to MySQL
Description
public bool MysqlndUhConnection::sendClose(
mysqlnd_connection connection);
Sends a close command to MySQL.
Parameters
connection
Mysqlnd connection handle. Do not modify!
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.43 MysqlndUhConnection::sendClose example
<?php
class proxy extends MysqlndUhConnection {
public function sendClose($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
MysqlndUhConnection::sendQuery
654
$ret = parent::sendClose($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->close();
?>
The above example will output:
proxy::sendClose(array (
0 => NULL,
))
proxy::sendClose returns true
proxy::sendClose(array (
0 => NULL,
))
proxy::sendClose returns true
See Also
mysqlnd_uh_set_connection_proxy
9.7.37 MysqlndUhConnection::sendQuery
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::sendQuery
Sends a query to MySQL
Description
public bool MysqlndUhConnection::sendQuery(
mysqlnd_connection connection,
string query);
Sends a query to MySQL.
Parameters
connection
Mysqlnd connection handle. Do not modify!
query
The query string.
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.44 MysqlndUhConnection::sendQuery example
MysqlndUhConnection::serverDumpDebugInformation
655
<?php
class proxy extends MysqlndUhConnection {
public function sendQuery($res, $query) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::sendQuery($res, $query);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->query("SELECT 1");
?>
The above example will output:
proxy::sendQuery(array (
0 => NULL,
1 => 'SELECT 1',
))
proxy::sendQuery returns true
See Also
mysqlnd_uh_set_connection_proxy
9.7.38 MysqlndUhConnection::serverDumpDebugInformation
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::serverDumpDebugInformation
Dump debugging information into the log for the MySQL server
Description
public bool MysqlndUhConnection::serverDumpDebugInformation(
mysqlnd_connection connection);
Dump debugging information into the log for the MySQL server.
Parameters
connection
Mysqlnd connection handle. Do not modify!
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.45 MysqlndUhConnection::serverDumpDebugInformation example
<?php
MysqlndUhConnection::setAutocommit
656
class proxy extends MysqlndUhConnection {
public function serverDumpDebugInformation($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::serverDumpDebugInformation($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->dump_debug_info();
?>
The above example will output:
proxy::serverDumpDebugInformation(array (
0 => NULL,
))
proxy::serverDumpDebugInformation returns true
See Also
mysqlnd_uh_set_connection_proxy
mysqli_dump_debug_info
9.7.39 MysqlndUhConnection::setAutocommit
Copyright 1997-2014 the PHP Documentation Group.
• MysqlndUhConnection::setAutocommit
Turns on or off auto-committing database modifications
Description
public bool MysqlndUhConnection::setAutocommit(
mysqlnd_connection connection,
int mode);
Turns on or off auto-committing database modifications
Parameters
connection
Mysqlnd connection handle. Do not modify!
mode
Whether to turn on auto-commit or not.
Return Values
Returns TRUE on success. Otherwise, returns FALSE
Examples
Example 9.46 MysqlndUhConnection::setAutocommit example
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