MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
mysqli_stmt::store_result
mysqli_stmt_store_result
Transfers a result set from a prepared statement
Object oriented style
public bool mysqli_stmt::store_result();
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
), if 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.
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
.
stmt
Procedural style only: A statement identifier returned
by
mysqli_stmt_init
.
Returns true
on success or
false
on failure.
Example 3.103 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 3.104 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.
mysqli_prepare
|
mysqli_stmt_result_metadata
|
mysqli_stmt_fetch
|