Oracle 5.0, Справочное руководство

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Mysqlnd user handler plugin (
mysqlnd_uh
)
2734
Parameters
connection
Mysqlnd connection handle. Do not modify!
Return Values
Number of columns.
Examples
MysqlndUhConnection::getFieldCount
is not only executed after the invocation of a user space
API call which maps directly to it but also called internally.
Example 20.346.
MysqlndUhConnection::getFieldCount
example
<?php
class proxy extends MysqlndUhConnection {
public function getFieldCount($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::getFieldCount($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");
$mysqli->query("WILL_I_EVER_LEARN_SQL?");
var_dump($mysqli->field_count);
$mysqli->query("SELECT 1, 2, 3 FROM DUAL");
var_dump($mysqli->field_count);
?>
The above example will output:
proxy::getFieldCount(array (
0 => NULL,
))
proxy::getFieldCount returns 0
int(0)
proxy::getFieldCount(array (
0 => NULL,
))
proxy::getFieldCount returns 3
proxy::getFieldCount(array (
0 => NULL,
))
proxy::getFieldCount returns 3
int(3)
See Also
mysqlnd_uh_set_connection_proxy
mysqli_field_count
20.7.8.7.12.
MysqlndUhConnection::getHostInformation
Copyright 1997-2012 the PHP Documentation Group. [2230]
•
MysqlndUhConnection::getHostInformation
Returns a string representing the type of connection used