mysqli_change_user (PHP 5) mysqli_change_user (no version information, might be only in CVS) mysqli->change_user -- Changes the user of the specified database connection DescriptionProcedural style: bool mysqli_change_user ( mysqli link, string user, string password, string database ) Object oriented style (method): class mysqli { bool change_user ( string user, string password, string database ) }
mysqli_change_user() is used to change the user of the specified
database connection as given by the link parameter and to set the
current database to that specified by the database parameter.
If desired, the NULL value may be passed in place of the database
parameter resulting in only changing the user and not selecting a database. To select
a database in this case use the mysqli_select_db() function.
In order to successfully change users a valid username and
password parameters must be provided and that user must have
sufficient permissions to access the desired database. If for any reason authorization
fails, the current user authentication will remain.
Note:
Using this command will always cause the current database connection to behave as if
was a completely new database connection, regardless of if the operation was completed
successfully. This reset includes performing a rollback on any active transactions,
closing all temporary tables, and unlocking all locked tables.
Return Values
Returns TRUE on success or FALSE on failure.
ExamplesExample 1. Object oriented style |
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "test");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$mysqli->query("SET @a:=1");
$mysqli->change_user("my_user", "my_password", "world");
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("Default database: %s\n", $row[0]);
$result->close();
}
if ($result = $mysqli->query("SELECT @a")) {
$row = $result->fetch_row();
if ($row[0] === NULL) {
printf("Value of variable a is NULL\n");
}
$result->close();
}
$mysqli->close();
?>
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Example 2. Procedural style |
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "test");
if (!$link) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
mysqli_query($link, "SET @a:=1");
mysqli_change_user($link, "my_user", "my_password", "world");
if ($result = mysqli_query($link, "SELECT DATABASE()")) {
$row = mysqli_fetch_row($result);
printf("Default database: %s\n", $row[0]);
mysqli_free_result($result);
}
if ($result = mysqli_query($link, "SELECT @a")) {
$row = mysqli_fetch_row($result);
if ($row[0] === NULL) {
printf("Value of variable a is NULL\n");
}
mysqli_free_result($result);
}
mysqli_close($link);
?>
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The above example will output: Default database: world
Value of variable a is NULL |
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mysqli_bind_result
