存储过程 returns 空结果

Question

下面是我的存储过程：

DELIMITER $$
--
-- Procedures
--
DROP PROCEDURE IF EXISTS `checkLogin`$$
CREATE DEFINER=`root`@`localhost` PROCEDURE `checkLogin`(IN `uname` VARCHAR(255), IN `pwd` VARCHAR(255))
BEGIN
    SELECT a.id, a.role_id, b.name FROM userTable as a
    LEFT JOIN roleTable as b on b.id = a.role_id 
    WHERE a.username = uname AND password = pwd;
END$$

DELIMITER ;

下面是我的执行代码：

    $stmt = $this->dbCon->prepare("CALL checkLogin(?, ?)");

    $stmt->bindParam(1, $email, PDO::PARAM_STR, 4000); 
    $stmt->bindParam(2, $password, PDO::PARAM_STR, 4000); 

    // call the stored procedure
    $stmt->execute();

    //var_dump($res);
    $op = ( $stmt ) ? $stmt->fetchAll(PDO::FETCH_ASSOC) : '';

    echo '<pre>'; print_r($op); die;

上面$this->dbCon是我的PDO对象

当我执行这段代码时，我只得到空结果。但是当我运行通过 phpmyadmin 的程序时它工作正常。

即使我通过命令行执行它也能正常工作:

我也尝试了下面的方法（从回答中收到），但仍然不成功

$stmt = $db->prepare("Call checkLogin(?,?);");
$stmt->execute(array($email,$password));

$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

if (count($rows) == 0)
    echo 'Failed Login!'."\n";
else
    echo 'Logged In...'."\n".print_r($rows,true);

Answer 1

这似乎对我有用。但是我没有使用 Bind 参数。绑定似乎也对我有用。我还添加了 PDO 测试。

代码

//-- Test if PDO is loaded properly.
if (extension_loaded ('PDO' )) { 
    echo 'PDO is loaded'."\n";
    if (extension_loaded('pdo_mysql')) 
        echo 'PDO mysql driver is loaded.'."\n"; 
    else 
        echo 'PDO mysql driver is NOT loaded.'."\n";
} else {
    echo 'PDO is NOT loaded!'."\n";
}

//-- Run a test
$email = 'rob@home.net';
$password = 'abc123!@#';

$db = new PDO('mysql:host=localhost;dbname=test;charset=utf8', 'root', 'toor');

$stmt = $db->prepare("Call checkLogin(?,?);");
$stmt->execute(array($email,$password));

$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

if (count($rows) == 0)
    echo 'Failed Login!'."\n";
else
    echo 'Logged In...'."\n".print_r($rows,true);

输出：

PDO is loaded
PDO mysql driver is loaded.
Logged In...
Array
(
    [0] => Array
        (
            [id] => 1
            [role_id] => 1
            [name] => edit
        )

)

Answer 2

你可以尝试某些方法，这是另一种在执行方法中直接传递键值参数的方法，命名占位符应该在过程中传递

$stmt = $this->dbCon->准备("CALL checkLogin(:Email, :Password)");

$keyArray = array("Email"=>"test@test.com","Password"=>"123456");

$stmt->执行($keyArray);

存储过程 returns 空结果

stored procedure returns empty result

php

mysql

pdo

stored-procedures

代码

输出：