Compzone.Org :: Podręcznik PHP :: mysqli_stmt_bind_param

Podręcznik PHP
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mysqli_stmt_bind_param

(PHP 5)

(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

Tabela 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

Notatka: 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.

Zwracane wartości

Zwraca TRUE w przypadku sukcesu, FALSE w przypadku porażki.

Patrz także

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

Przykłady

Przykład 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();

                ?>

Przykład 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);

                ?>

Powyższy przykład wyświetli:

1 Row inserted.
1 Row deleted.

Poprzedni	Spis treści	Następny
mysqli_stmt_affected_rows	Początek rozdziału	mysqli_stmt_bind_result