How to run the bind_param() statement in PHP?

Question

I\'m trying to make the following code work but I can\'t reach the execute() line.

$mysqli = $this->C         


        

Answer 1

Your actual problem is not at line 5 but rather at line 1.
You are trying to use unusable driver.
While PDO does exactly what you want.

$sql = "SELECT `name`, `lastname` FROM `tblStudents` WHERE `idStudent`=?"
$stm = $this->pdo->prepare($sql);
$stm->execute(array(2));
return $stm->fetch();

---

After all the years passed since this answer has been written, a new PHP feature emerged, called "argument unpacking". So, since version 5.6 you can pass a value into bind_param:

$stmt->bind_param('i', ...[2]);

But still you have a trouble with getting your data back out of a prepared statement :)

Answer 2

When binding parameters you need to pass a variable that is used as a reference:

$var = 1;

$stmt->bind_param('i', $var);

See the manual: http://php.net/manual/en/mysqli-stmt.bind-param.php

Note that $var doesn't actually have to be defined to bind it. The following is perfectly valid:

$stmt->bind_param('i', $var);

foreach ($array as $element)
{

    $var = $element['foo'];

    $stmt->execute();

}

Answer 3

here it is just a simple explaination
declare a variable to be bind

    $var="email";
$mysqli = $this->ConnectLowPrivileges();
echo 'Connected<br>';

$var="email";
$stmt = $mysqli->prepare("SELECT name, lastname FROM tablename WHERE idStudent=?" LIMIT=1);
echo 'Prepared and binding parameters<br>';
$stmt->bindparam(1,$var);