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# mysqli_stmt_bind_param

(PHP 5)

mysqli_stmt_bind_param

(no version information, might be only in CVS)

stmt->bind_param -- Binds variables to a prepared statement as parameters

## Description

Procedural style:

bool mysqli_stmt_bind_param ( mysqli_stmt stmt, string types, mixed &var1 [, mixed &...] )

Object oriented style (method):

class mysqli_stmt {
bool bind_param ( string types, mixed &var1 [, mixed &...] )
}

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 sent in packets

> Note: If data size of a variable exceeds max. allowed packet size (max_allowed_packet), you have to specify b in types and use mysqli_stmt_send_long_data() to send the data in packets.

> 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.

## See Also

mysqli_stmt_bind_result(), mysqli_stmt_execute(), mysqli_stmt_fetch(), mysqli_prepare(), mysqli_stmt_send_long_data(), mysqli_stmt_errno() and mysqli_stmt_error().

## Examples

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";
$percent = 11.2;
/* execute prepared statement */
mysqli_stmt_execute($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 example will output:

    1 Row inserted.
    1 Row deleted.

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