(PHP 5, PHP 7, PHP 8)
mysqli::multi_query -- mysqli_multi_query — Performs one or more queries on the database
Nesne yönelimli kullanım
Yordamsal kullanım
Executes one or multiple queries which are concatenated by a semicolon.
Sorgu herhangi bir değişken girdi içeriyorsa, bunun yerine bağımsız değişkenli hazırlanmış deyimler kullanılmalıdır. Veya, veriler düzgün biçimde biçimlendirilmeli ve tüm dizgeler mysqli_real_escape_string() işlevi kullanılarak öncelenmelidir.
Queries are sent asynchronously in a single call to the database, but the database processes them sequentially. mysqli_multi_query() waits for the first query to complete before returning control to PHP. The MySQL server will then process the next query in the sequence. Once the next result is ready, MySQL will wait for the next execution of mysqli_next_result() from PHP.
It is recommended to use do-while to process multiple queries. The connection will be busy until all queries have completed and their results are fetched to PHP. No other statement can be issued on the same connection until all queries are processed. To proceed to the next query in the sequence, use mysqli_next_result(). If the next result is not ready yet, mysqli will wait for the response from the MySQL server. To check if there are more results, use mysqli_more_results().
For queries which produce a result set, such as SELECT, SHOW, DESCRIBE or EXPLAIN, mysqli_use_result() or mysqli_store_result() can be used to retrieve the result set. For queries which do not produce a result set, the same functions can be used to retrieve information such as the number of affected rows.
Executing CALL statements for stored procedures can produce multiple result sets. If the stored procedure contains SELECT statements, the result sets are returned in the order that they are produced as the procedure executes. In general, the caller cannot know how many result sets a procedure will return and must be prepared to retrieve multiple results. The final result from the procedure is a status result that includes no result set. The status indicates whether the procedure succeeded or an error occurred.
bağlantıSadece yordamsal tarz: mysqli_connect() veya mysqli_init() işlevinden dönen bir mysqli nesnesi.
queryA string containing the queries to be executed. Multiple queries must be separated by a semicolon.
Returns false if the first statement failed. To retrieve subsequent errors from other statements you have to call mysqli_next_result() first.
Eğer mysqli hata bildirimi etkinse (MYSQLI_REPORT_ERROR) ve istenen işlem başarısız olursa bir uyarı üretilir. Ek olarak, kip MYSQLI_REPORT_STRICT ise bunun yerine mysqli_sql_exception istisnası oluşur.
Örnek 1 mysqli::multi_query() example
Nesne yönelimli kullanım
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
$mysqli->multi_query($query);
do {
if ($result = $mysqli->store_result()) {
while ($row = $result->fetch_row()) {
printf("%s\n", $row[0]);
}
}
if ($mysqli->more_results()) {
printf("-----------------\n");
}
} while ($mysqli->next_result());Yordamsal kullanım
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
mysqli_multi_query($link, $query);
do {
if ($result = mysqli_store_result($link)) {
while ($row = mysqli_fetch_row($result)) {
printf("%s\n", $row[0]);
}
}
if (mysqli_more_results($link)) {
printf("-----------------\n");
}
} while (mysqli_next_result($link));The above examples will output something similar to:
my_user@localhost ----------------- Amersfoort Maastricht Dordrecht Leiden Haarlemmermeer