mysqli :: get_result有什么问题？

Question

I have the following code:

$postId = $_GET['postId'];
$mysqli = new mysqli('localhost', 'username', 'database', 'name_db');
mysqli_report(MYSQLI_REPORT_ALL);

$stmt = $mysqli->stmt_init();
$stmt->prepare("
SELECT *
FROM posts
WHERE postId = ?
");
$stmt->bind_param('i', $postId);
$stmt->execute();
$result = $stmt->get_result();//Call to undefined method 
$info = $result->fetch_array(MYSQLI_ASSOC);
echo json_encode($info);

And I get some error marked above. What have i done wrong?

EDIT:

changed fecth_array() to fetch_array()

Answer 1

As others have stated, it is only available in bleeding edge PHP. You could do something like this ( answer to a similar question ):

function bind_array($stmt, &$row) {
    $md = $stmt->result_metadata();
    $params = array();
    while($field = $md->fetch_field()) {
        $params[] = &$row[$field->name];
    }

    call_user_func_array(array($stmt, 'bind_result'), $params);
}

// ....
bind_array($stmt, $info);
$stmt->fetch();

echo json_encode($info);

Or use mysqli::query if you have a simple query with no parameters - don't use it with dynamically generated SQL-statements .

Answer 2

As mentioned in php documentation mysqli_stmt::get_result , this method is supported since PHP 5.3.0.

And it is stated in the user notes section that:

This method requires the mysqlnd driver. Othervise you will get this error: Call to undefined method mysqli_stmt::get_result()

Answer 3

您可能正在使用旧版本的PHP，但不支持手册页上所述的get_result（）

(No version information available, might only be in SVN)

Answer 4

The manual page doesn't give any clear information on which minimum version of PHP is needed for get_result() to work:

(No version information available, might only be in SVN)

I don't know the background to this, but it may simply not be available in your PHP version.

You could use fetch() instead.

Answer 5

check to see it your PHP mysql native driver is enable. get->result() only works when mysql native driver is enable. http://www.php.net/manual/en/mysqli-stmt.get-result.php

Answer 6

I´m guessing it´s the line below that, change:

$info = $result->fecth_array(MYSQLI_ASSOC);

to:

$info = $result->fetch_array(MYSQLI_ASSOC);