3.9.5 mysqli_stmt::bind_result, mysqli_stmt_bind

3.9.5 `mysqli_stmt::bind_result`, `mysqli_stmt_bind_result`

mysqli_stmt::bind_result
mysqli_stmt_bind_result
Binds variables to a prepared statement for result storage

Description

Object oriented style

public bool mysqli_stmt::bind_result(mixed var,
                                     mixed vars);

Procedural style

bool mysqli_stmt_bind_result(mysqli_stmt stmt,
                             mixed var,
                             mixed vars);

Binds columns in the result set to variables.

When mysqli_stmt_fetch is called to fetch data, the MySQL client/server protocol places the data for the bound columns into the specified variables var/vars.

Note

Note that all columns must be bound after mysqli_stmt_execute and prior to calling mysqli_stmt_fetch. Depending on column types bound variables can silently change to the corresponding PHP type.

A column can be bound or rebound at any time, even after a result set has been partially retrieved. The new binding takes effect the next time mysqli_stmt_fetch is called.

Parameters

stmt: Procedural style only: A statement identifier returned by mysqli_stmt_init.
var: The first variable to be bound.
vars: Further variables to be bound.

Return Values

Returns true on success or false on failure.

Examples

Example 3.74 Object oriented style

<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

/* prepare statement */
if ($stmt = $mysqli->prepare("SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) {
    $stmt->execute();

    /* bind variables to prepared statement */
    $stmt->bind_result($col1, $col2);

    /* fetch values */
    while ($stmt->fetch()) {
        printf("%s %s\n", $col1, $col2);
    }

    /* close statement */
    $stmt->close();
}
/* close connection */
$mysqli->close();

?>

Example 3.75 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();
}

/* prepare statement */
if ($stmt = mysqli_prepare($link, "SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) {
    mysqli_stmt_execute($stmt);

    /* bind variables to prepared statement */
    mysqli_stmt_bind_result($stmt, $col1, $col2);

    /* fetch values */
    while (mysqli_stmt_fetch($stmt)) {
        printf("%s %s\n", $col1, $col2);
    }

    /* close statement */
    mysqli_stmt_close($stmt);
}

/* close connection */
mysqli_close($link);
?>

The above examples will output:

AFG Afghanistan
ALB Albania
DZA Algeria
ASM American Samoa
AND Andorra