运行 SQL 函数作为 PDO 准备语句和返回值

Question

我正在尝试将用户的 IP 地址存储在数据库中，并基于此 Whosebug Question 我了解到 IP 地址应以二进制格式存储。

运行函数作为准备语句 - 我可以将 @ip 绑定为 $text 参数

$stmt = $this->dbconnect->prepare ('CREATE FUNCTION dbo.fnBinaryIPv4(@:ip AS VARCHAR(15)) RETURNS BINARY(4)
        AS
        BEGIN
        DECLARE @bin AS BINARY(4)
        SELECT @bin = CAST( CAST( PARSENAME( @ip, 4 ) AS INTEGER) AS BINARY(1))
        + CAST( CAST( PARSENAME( @ip, 3 ) AS INTEGER) AS BINARY(1))
        + CAST( CAST( PARSENAME( @ip, 2 ) AS INTEGER) AS BINARY(1))
        + CAST( CAST( PARSENAME( @ip, 1 ) AS INTEGER) AS BINARY(1))
        RETURN @bin
 END;');


    $stmt->execute(array(':ip'=>$text));

如何使用返回值 (@bin)？

Answer 1

您的代码不是在执行存储的函数，而是在创建它。如果你想执行一个以前创建的存储函数，只需 select 它是 return value

例如：

$stmt = $this->dbconnect->prepare ('SELECT dbo.fnBinaryIPv4(:ip) as bin');
$stmt->execute(array(':ip'=>$text));

运行 SQL 函数作为 PDO 准备语句和返回值

Running SQL function as PDO prepared statement and returning values

php

mysql

pdo