7.3.9.28 mysqli_stmt::store_result, mysqli_stmt_store_result

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• mysqli_stmt::store_result

  mysqli_stmt_store_result

  Stores a result set in an internal buffer

Description

Object-oriented style

public bool mysqli_stmt::store_result();

Procedural style

bool mysqli_stmt_store_result(mysqli_stmt statement);

This function should be called for queries that successfully produce a result set (e.g. SELECT, SHOW, DESCRIBE, EXPLAIN) only if the complete result set needs to be buffered in PHP. Each subsequent mysqli_stmt_fetch call will return 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 loss in all cases. You can detect whether the query produced a result set by checking if mysqli_stmt_result_metadata returns false.

Parameters

statement

Procedural style only: A mysqli_stmt object returned by mysqli_stmt_init.

Return Values

Returns true on success or false on failure.

Examples

Example 7.108 Object-oriented style

<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
$stmt = $mysqli->prepare($query);
$stmt->execute();
/* store the result in an internal buffer */
$stmt->store_result();
printf("Number of rows: %d.\n", $stmt->num_rows);

Example 7.109 Procedural style

<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
$stmt = mysqli_prepare($link, $query);
mysqli_stmt_execute($stmt);
/* store the result in an internal buffer */
mysqli_stmt_store_result($stmt);
printf("Number of rows: %d.\n", mysqli_stmt_num_rows($stmt));

The above examples will output:

Number of rows: 20.

See Also

mysqli_prepare

mysqli_stmt_result_metadata

mysqli_stmt_fetch