PHP MySQL成功消息始终显示

时间:2015-01-22 23:37:31

标签: php mysql message

我遇到成功消息或失败消息的问题。我的代码如下,但问题是,无论如何,成功消息总是显示 - 甚至在查询发生之前。如果我删除了成功消息if命令,那么它就不会执行它应该做的事情。

 isset($_POST['delete']);
 $systemid = $_POST['systemid'];
 $clientiddel = $_POST['clientiddel'];
 $querydel = "DELETE FROM ... WHERE customer = '" . $clientiddel . " ' AND system_id = '" . $systemid . "'";

  if(mysql_query($querydel))
{
    echo 'SUCCESS';
}
else
{
    echo 'FAILED' .mysql_error();
}

我的表单是

<form method='post' action='" . $_PHP_SELF . "'>
<input name='systemid' type='hidden' id='systemid' value='" . $row['system_id'] . "'><input name='clientiddel' type='hidden' id='clientiddel' value='" . $row['customer'] . "'><input name='delete' type='image' src='images/delete.gif' id='delete' alt='Delete' onclick='return confirm_delete()'>
</form>

onclick功能

<script type='text/javascript'>
function confirm_delete() {
  return confirm('Are you sure you want to delete \'".$row['system_id']."\' from this account? ');
}
</script>

编辑:

问题已解决 - 在名为&#39;删除&#39;的表单中添加了一个额外的隐藏字段使它按照应有的方式工作。此外,这是此操作的最终来源:

    if(isset($_POST['delete'])){
        $systemid = $_POST['systemid'];
        $clientiddel = $_POST['clientiddel'];
        $querydel = "DELETE FROM .... WHERE system_customer = '".$clientiddel." ' AND system_id = '".$systemid."'";

        if(mysql_query($querydel))
        {
            echo 'SUCCESS';
        }
        else
        {
            echo 'FAILED' .mysql_error();
        }

}

3 个答案:

答案 0 :(得分:1)

让我们从表单开始。 $_PHP_SELF不存在。您想要使用的是$_SERVER['PHP_SELF']。您最好不要尝试处理该变量并将操作留空:

<form method="post" action="">

你的PHP将永远运行....你需要做这样的事情:

if(isset($_POST['delete'])) {
    // run the PHP here.
}

注意

不推荐使用mysql_*库,并将其设置为将来删除。请考虑使用更可靠的库,例如PDOMySQLi。它根本不难。这是一个简单的PDO示例,可以实现您的尝试。

/* Connect to an ODBC database using driver invocation */
$dsn = 'mysql:dbname=testdb;host=127.0.0.1';
$user = 'dbuser';
$password = 'dbpass';

try {
    $dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}

$sql = "DELETE FROM table WHERE customer = :client_id AND system_id = :system_id";
$stmt = $pdo->prepare($sql);
$stmt->bindParam(':client_id', $_POST['clientiddel'], PDO::PARAM_INT);
$stmt->bindParam(':system_id', $_POST['systemid'], PDO::PARAM_INT);
$stmt->execute();

Read More about PHP PDO here


您需要提供confirm_delete()按钮中存在的delete代码。 onClick属性。

答案 1 :(得分:0)

<?php
     if(isset($_POST['delete'])){
        $systemid = $_POST['systemid'];
        $clientiddel = $_POST['clientiddel'];
        $querydel = "DELETE FROM ... WHERE customer = '" . $clientid . " ' AND system_id = '" . $systemid . "'";

        if(mysql_query($querydel))
        {
            echo 'SUCCESS';
        }
        else
        {
            echo 'FAILED' .mysql_error();
        }
    ?>

尝试这样,让我知道它是否有效。如果没有工作启用error_reporting()。将这两行放在页面的开头

ini_set('display_errors',1); error_reporting(E_ALL);

编辑:

更改$_PHP_SELF to $_SERVER['PHP_SELF']

<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>" > 

答案 2 :(得分:0)

您的$ clientid变量出现了问题,您将其声明为$ clientiddel

试试这个:

<?php
if(isset($_POST['delete'])){
    $systemid = $_POST['systemid'];
    $clientid = $_POST['clientiddel'];
    $strSQL = "DELETE FROM ... WHERE customer = '" . $clientid . " ' AND system_id = '" . $systemid . "'";
    $queryDel = mysql_query($strSQL);
    if(!$queryDel){
        echo "FAILED:" . mysql_error();
    } else {
        echo "SUCCESS";
    }
}
?>

编辑: 他们是对的,您在表单标签中也出错了,请使用:

<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">