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mysqli_stmt_bind_param
Manuál PHP
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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

Popis

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 &...] )

}

Bind variables for the parameter markers in the SQL statement that was passed to mysqli_prepare().

Poznámka: 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.

Seznam parametrů

stmt

Procedural style only: A statement identifier returned by mysqli_stmt_init().

types

A string that contains one or more characters which specify the types for the corresponding bind variables:

Tabulka 1. Type specification chars

CharacterDescription
icorresponding variable has type integer
dcorresponding variable has type double
scorresponding variable has type string
bcorresponding variable is a blob and will be sent in packets

var1

The number of variables and length of string types must match the parameters in the statement.

Návratové hodnoty

Vrací TRUE při úspěchu, FALSE při selhání.

Příklady

Příklad 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();
?>

Příklad 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);
?>

Výše uvedený příklad vypíše:

1 Row inserted.
1 Row deleted.

Viz také

mysqli_stmt_bind_result()
mysqli_stmt_execute()
mysqli_stmt_fetch()
mysqli_prepare()
mysqli_stmt_send_long_data()
mysqli_stmt_errno()
mysqli_stmt_error()

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