mysqli_stmt_bind_param() is used to bind variables for the parameter markers in the SQL statement that was passed to mysqli_prepare(). The string types contains one or more characters which specify the types for the corresponding bind variables

Table 1. Type specification chars

Character	Description
i	corresponding variable has type integer
d	corresponding variable has type double
s	corresponding variable has type string
b	corresponding variable is a blob and will be send in packages

Note: If data size of a variable exceeds max. allowed package size (max_allowed_package), you have to specify b in types and use mysqli_stmt_send_long_data() to send the data in packages.
The number of variables and length of string types must match the parameters in the statement.

Return values

Returns TRUE on success or FALSE on failure.

Example

Example 1. Object oriented style


<?php

$mysqli = new mysqli('localhost', 'my_user', 'my_password', 'world');



/* check connection */

if (mysqli_connect_errno()) {

    printf("Connect failed: %s\n", mysqli_connect_error());

    exit();

}



$stmt = $mysqli->prepare("INSERT INTO CountryLanguage VALUES (?, ?, ?, ?)");

$stmt->bind_param('sssd', $code, $language, $official, $percent);



$code = 'DEU';

$language = 'Bavarian';

$official = "F";

$percent = 11.2;



/* execute prepared statement */

$stmt->execute();



printf("%d Row inserted.\n", $stmt->affected_rows);



/* close statement and connection */

$stmt->close();



/* Clean up table CountryLanguage */

$mysqli->query("DELETE FROM CountryLanguage WHERE Language='Bavarian'");

printf("%d Row deleted.\n", $mysqli->affected_rows);



/* close connection */

$mysqli->close();

?>

Example 2. Procedural style


<?php

$link = mysqli_connect('localhost', 'my_user', 'my_password', 'world');



/* check connection */

if (!$link) {

    printf("Connect failed: %s\n", mysqli_connect_error());

    exit();

}



$stmt = mysqli_prepare($link, "INSERT INTO CountryLanguage VALUES (?, ?, ?, ?)");

mysqli_stmt_bind_param($stmt, 'sssd', $code, $language, $official, $percent);



$code = 'DEU';

$language = 'Bavarian';

$official = "F";

$percent = 11.2;



/* execute prepared statement */

mysqi_stmt_execute($stmt);



printf("%d Row inserted.\n", mysqli_stmt_affected_rows($stmt));



/* close statement and connection */

mysqli_stmt_close($stmt);



/* Clean up table CountryLanguage */

mysqli_query($link, "DELETE FROM CountryLanguage WHERE Language='Bavarian'");

printf("%d Row deleted.\n", mysqli_affected_rows($link));



/* close connection */

mysqli_close($link);

?>

The above examples would produce the following output:

1 Row inserted.
1 Row deleted.

mysqli_stmt_bind_param

Description

Return values

See also

Example