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Transfers a result set from a prepared statement


mysqli_stmt::store_result

mysqli_stmt_store_result

(PHP 5)

mysqli_stmt::store_result -- mysqli_stmt_store_resultTransfers a result set from a prepared statement

Description

Object oriented style

bool mysqli_stmt::store_result ( void )

Procedural style

bool mysqli_stmt_store_result ( mysqli_stmt $stmt )

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.

Note:

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.

Parameters

stmt

Procedural style only: A statement identifier returned by mysqli_stmt_init().

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #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();
?>

Example #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);
?>

The above examples will output:

 Number of rows: 20. 

See Also



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