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oci_bind_by_name

(PHP 5)

oci_bind_by_name -- 绑定一个 PHP 变量到一个 Oracle 位置标志符

说明

bool oci_bind_by_name ( resource stmt, string ph_name, mixed &variable [, int maxlength [, int type]] )

oci_bind_by_name() 将 PHP 变量 variable 绑定到 Oracle 的位置标志符 ph_name。该变量是否会被用作输入输出是在运行时决定的，并且函数给该变量分配必要的存储空间。length 参数确定该绑定的最大长度，如果将 length 设为 -1，oci_bind_by_name() 会用 variable 变量的当前长度确定绑定的最大长度。

如果要绑定一个抽象数据类型（LOB/ROWID/BFILE），需要先用 oci_new_descriptor() 函数分配空间。length 没有用于抽象数据类型，应被设为 -1。type 参数告诉 Oracle 要使用什么样的描述符。可能的值为：

例子 1. oci_bind_by_name() 例子

<?php
/* oci_bind_by_name example thies at thieso dot net (980221)
  inserts 3 records into emp, and uses the ROWID for updating the
  records just after the insert.
*/

$conn = oci_connect("scott", "tiger");

$stmt = oci_parse($conn, "
                          INSERT INTO
                                     emp (empno, ename)
                                              VALUES
                                     (:empno,:ename)
                            RETURNING
                                     ROWID
                                 INTO
                                     :rid
                                         ");

$data = array(
              1111 => "Larry",
              2222 => "Bill",
              3333 => "Jim"
             );

$rowid = oci_new_descriptor($conn, OCI_D_ROWID);

oci_bind_by_name($stmt, ":empno", $empno, 32);
oci_bind_by_name($stmt, ":ename", $ename, 32);
oci_bind_by_name($stmt, ":rid",   $rowid, -1, OCI_B_ROWID);

$update = oci_parse($conn, "
                            UPDATE
                                  emp
                               SET
                                  sal = :sal
                             WHERE
                                  ROWID = :rid
                             ");
oci_bind_by_name($update, ":rid", $rowid, -1, OCI_B_ROWID);
oci_bind_by_name($update, ":sal", $sal,   32);

$sal = 10000;

foreach ($data as $empno => $ename) {
    oci_execute($stmt);
    oci_execute($update);
}

$rowid->free();

oci_free_statement($update);
oci_free_statement($stmt);

$stmt = oci_parse($conn, "
                          SELECT
                                *
                            FROM
                                emp
                           WHERE
                                empno
                              IN
                                (1111,2222,3333)
                              ");
oci_execute($stmt);

while ($row = oci_fetch_assoc($stmt)) {
    var_dump($row);
}

oci_free_statement($stmt);

/* delete our "junk" from the emp table.... */
$stmt = oci_parse($conn, "
                          DELETE FROM
                                     emp
                                WHERE
                                     empno
                                   IN
                                     (1111,2222,3333)
                                   ");
oci_execute($stmt);
oci_free_statement($stmt);

oci_close($conn);
?>

记住，本函数删除了行尾的空白字符。见以下例子：

例子 2. oci_bind_by_name() 例子

<?php
$connection = oci_connect('apelsin','kanistra');
$query = "INSERT INTO test_table VALUES(:id, :text)";

$statement = oci_parse($query);
oci_bind_by_name($statement, ":id", 1);
oci_bind_by_name($statement, ":text", "trailing spaces follow     ");
oci_execute($statement);
/*
This code will insert into DB string 'trailing spaces follow', without
trailing spaces
*/
?>

例子 3. oci_bind_by_name() 例子

<?php
$connection = oci_connect('apelsin','kanistra');
$query = "INSERT INTO test_table VALUES(:id, 'trailing spaces follow      ')";

$statement = oci_parse($query);
oci_bind_by_name($statement, ":id", 1);
oci_execute($statement);
/*
And this code will add 'trailing spaces follow      ', preserving
trailing whitespaces
*/
?>

警告

不要将 magic_quotes_gpc 或 addslashes() 与 oci_bind_by_name() 同时使用，因为不需要转义，任何自动加上的引号都会被写入数据库中，因为 oci_bind_by_name() 不能分辨有意加上的引号和魔术引号。

如果成功则返回 TRUE，失败则返回 FALSE。

注: 在 PHP 5.0.0 之前的版本必须使用 ocibindbyname() 替代本函数。该函数名仍然可用，为向下兼容作为 oci_bind_by_name() 的别名。不过其已被废弃，不推荐使用。

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