MySQLi
PHP 手册

mysqli::multi_query

mysqli_multi_query

(PHP 5)

mysqli::multi_query -- mysqli_multi_queryPerforms a query on the database

说明

Object oriented style (method):

bool mysqli::multi_query ( string $query )

Procedural style:

bool mysqli_multi_query ( mysqli $link , string $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().

参数

link

Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

query

The query, as a string.

返回值

Returns FALSE if the first statement failed. To retrieve subsequent errors from other statements you have to call mysqli_next_result() first.

范例

Example #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->free();
        }
        
/* print divider */
        
if ($mysqli->more_results()) {
            
printf("-----------------\n");
        }
    } while (
$mysqli->next_result());
}

/* close connection */
$mysqli->close();
?>

Example #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);
?>

上例的输出类似于:

my_user@localhost
-----------------
Amersfoort
Maastricht
Dordrecht
Leiden
Haarlemmermeer

参见


MySQLi
PHP 手册