PHP. Руководство по PHP. 2005

mysqli_stmt_store_result

(PHP 5)mysqli_stmt_store_result

(no version information, might be only in CVS)mysqli_stmt->store_result -- Transfers a result set from a prepared statement

Description

Procedural style:bool mysqli_stmt_store_result (mysqli_stmt stmt)

Object oriented style (method):class mysqli_stmt {

bool store_result (void)

}

You must call mysqli_stmt_store_result() for every query that

successfully produces a result set (SELECT, SHOW, DESCRIBE, EXPLAIN),

and only if you want to buffer the complete result set by the client,

so that the subsequent mysqli_stmt_fetch() call returns buffered data.

Замечание:

It is unnecessary to call mysqli_stmt_store_result() for other queries,

but if you do, it will not harm or cause any notable performance in all cases.

You can detect whether the query produced a result set by checking if

mysqli_stmt_result_metadata() returns NULL.

Примеры

Пример 1. Object oriented style


<?php
/* Open a connection */
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()){
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}

$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
if ($stmt = $mysqli->prepare($query)){

/* execute query */
$stmt->execute();

/* store result */
$stmt->store_result();

printf("Number of rows: %d.\n", $stmt->num_rows);

/* free result */
$stmt->free_result();

/* close statement */
$stmt->close();
}

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

Пример 2. Procedural style


<?php
/* Open a connection */
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()){
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}

$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
if ($stmt = mysqli_prepare($link, $query)){

/* execute query */
mysqli_stmt_execute($stmt);

/* store result */
mysqli_stmt_store_result($stmt);

printf("Number of rows: %d.\n", mysqli_stmt_num_rows($stmt));

/* free result */
mysqli_stmt_free_result($stmt);

/* close statement */
mysqli_stmt_close($stmt);
}

/* close connection */
mysqli_close($link);
?>

Результат выполнения данного примера:

Number of rows: 20.

PHP. Руководство по PHP. 2005

mysqli_stmt_store_result

Description

Возвращаемые значения

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Примеры

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