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mysqli_bind_param

(PHP 5 CVS only)

mysqli_bind_param -- Binds variables to a prepared statement as parameters

Description

bool mysqli_bind_param ( object stmt, array types, mixed var1 [, mixed var2, ...])

mysql_bind_param() is used to bind variables for the parameter markers in the SQL statement that was passed to mysql_prepare(). The array types specifies the types for the diffrent bind variables. Valid array values are MYSQLI_BIND_INT, MYSQLI_BIND_DOUBLE, MYSQLI_BIND_STRING and MYSQLI_SEND_DATA.

Note: If data size of a variable exceeds max. allowed package size (max_allowed_package), you have to specify MYSQLI_SEND_DATA and use mysqli_send_long_data() to send the data in packages.

The number of variables and array values must match the number of parameters in the statement.

Example 1. Prepared statements

Procedural style:

<?php
    /* connect to database */
    $link = mysqli_connect("localhost", "mysql_user", "mysql_password", "mydb") or
        die("Could not connect: " . mysqli_connect_error());

    /* create mytable */
    mysqli_query($link, "CREATE TABLE mytable (a int, b int, c varchar(30))");
    
    /* prepare statement and bind variables for insert statements */
    $stmt = mysqli_prepare($link, "INSERT INTO mytable VALUES (?, ?, ?)");
    mysqli_bind_param($stmt, array(MYSQLI_BIND_INT, MYSQLI_BIND_INT,
                      MYSQLI_BIND_STRING), $a, $b, $c);

    $a = 1;
    $b = 2;
    $c = "I prefer OpenSource software";

    /* execute prepared statement */
    mysqli_execute($stmt);

    /* close statement and connection */
    mysqli_close_stmt(stmt);
    mysqli_close(link);

?>

Object oriented style:

<?php
    /* connect to database */
    $mysql = mysqli_connect("localhost", "mysql_user", "mysql_password", "mydb") or
        die("Could not connect: " . mysqli_connect_error());

    /* create mytable */
    $mysql->query("CREATE TABLE mytable (a int, b int, c varchar(30))");
    
    /* prepare statement and bind parameters */
    $stmt = mysql->prepare("INSERT INTO mytable VALUES (?, ?, ?)");
    $stmt->bind_param(array(MYSQLI_BIND_INT, MYSQLI_BIND_INT,
                      MYSQLI_BIND_STRING), $a, $b, $c);

    $a = 1;
    $b = 2;
    $c = "I prefer opensource software";

    /* execute prepared statement */
    $stmt->execute();

    /* close statement and connection */
    $stmt->close();
    $mysql->close();
?>

See also: mysqli_bind_result(), mysqli_execute(), mysqli_fetch() mysqli_prepare() mysqli_send_long_data()


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