mysqli_multi_query
(PHP 5)
mysqli_multi_query
(no version information, might be only in CVS)
mysqli->multi_query -- Performs a query on the database
Description
Procedural style:
bool
mysqli_multi_query ( mysqli link, string query )
Object oriented style (method):
class
mysqli {
bool
multi_query ( string query )
}
The mysqli_multi_query() executes one or multiple queries
which are concatenated by a semicolon.
To retrieve the resultset from the first query you can use
mysqli_use_result() or mysqli_store_result().
All subsequent query results can be processed using
mysqli_more_results() and mysqli_next_result().
返回值
mysqli_multi_query() only returns FALSE if the first statement failed.
To retrieve subsequent errors from other statements you have to call
mysqli_next_result() first.
例
例子 1. Object oriented style
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
/* execute multi query */
if ($mysqli->multi_query($query)) {
do {
/* store first result set */
if ($result = $mysqli->store_result()) {
while ($row = $result->fetch_row()) {
printf("%s\n", $row[0]);
}
$result->close();
}
/* print divider */
if ($mysqli->more_results()) {
printf("-----------------\n");
}
} while ($mysqli->next_result());
}
/* close connection */
$mysqli->close();
?>
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例子 2. Procedural style
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
/* execute multi query */
if (mysqli_multi_query($link, $query)) {
do {
/* store first result set */
if ($result = mysqli_store_result($link)) {
while ($row = mysqli_fetch_row($result)) {
printf("%s\n", $row[0]);
}
mysqli_free_result($result);
}
/* print divider */
if (mysqli_more_results($link)) {
printf("-----------------\n");
}
} while (mysqli_next_result($link));
}
/* close connection */
mysqli_close($link);
?>
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上例将输出：
my_user@localhost
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Amersfoort
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