Question

我已经将站点从PHP 5.6升级到7.2，并且将代码从mysql切换到了mysqli，不幸的是mysql_result函数已从7.2中删除，因此在这里搜索后我发现了一个替代品，但不幸的是它不起作用。升级之前，我的表已填充，但升级之后，该表为空？！

这是升级之前的代码：

if (isset($_POST['submit'])){

   $sql = "SELECT id FROM users
   WHERE user='{$_POST['user']}'
   AND pass='{$_POST['passwd']}'";
   $result = mysql_query($sql);

   if (mysql_num_rows($result) == 0){
     header("Location: index.php?badlogin=");
     exit;
   }

   $_SESSION['sess_id_tid'] = mysql_result($result, 0); 
   $_SESSION['sess_user_tid'] = $_POST['user'];

   header("Location: tid.php");
   exit;
}

这是我升级到7.2后更改代码的方式：

if (isset($_POST['submit'])){

   $sql = "SELECT id FROM users WHERE user='{$_POST['user']}' AND pass='{$_POST['passwd']}'";
   $result = mysqli_query($conn, $sql);


   if (mysqli_num_rows($result) == 0){
     header("Location: index.php?badlogin=");
     exit;
   }


   function mysqli_result($res,$row=0,$col=0){
     $numrows = mysqli_num_rows($res);
     if ($numrows && $row <= ($numrows-1) && $row >=0){
       mysqli_data_seek($res,$row);
       $resrow = (is_numeric($col)) ? mysqli_fetch_row($res) : mysqli_fetch_assoc($res);
       if (isset($resrow[$col])){
         return $resrow[$col];
       }
     }
     return false;
   }

   $_SESSION['sess_id_tid'] = mysqli_result($result, 0, 0);
   $_SESSION['sess_user_tid'] = $_POST['user'];

   header("Location: tid.php");
   exit;

}

我想念什么？

更新：谢谢@Phil和@Madhuri Patel，

以下是我面临的问题的图片：

Image of the tables before PHP 5.6 and after PHP 7.2

Answer 1

mysql_query返回一个mysqli_result对象。从那里，您可以获得想要的价值。

{
"$schema": "http://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
    "actionGroupName": {
        "type": "string",
        "defaultValue": "newActionGroup",
        "metadata": {
            "description": "Unique name (within the Resource Group) for the Action group."
        }
    },
    "actionGroupShortName": {
        "type": "string",
        "defaultValue": "newActionGroup",
        "metadata": {
            "description": "Short name (maximum 12 characters) for the Action group."
        }
    },
    "emailReceiverName": {
        "type": "array",
        "metadata": {
            "description": "email receiver service Name."
        }
    },
    "emailReceiverAddress": {
        "type": "array",
        "metadata": {
            "description": "email receiver address."
        }
    }
},
"variables": {
    "customemailReceiverName": "[array(parameters('emailReceiverName'))]",
    "customemailReceiverAddress": "[parameters('emailReceiverAddress')]"
},
"resources": [
    {
        "type": "Microsoft.Insights/actionGroups",
        "name": "[parameters('actionGroupName')]",
        "apiVersion": "2018-03-01",
        "location": "Global",
        "properties": {
            "groupShortName": "[parameters('actionGroupShortName')]",
            "copy": [
                {
                    "name": "counts",
                    "count": "[length(parameters('emailReceiverName'))]",
                    "input": {
                        "emailReceivers": [
                            {
                                "name": "[parameters('emailReceiverName')[copyIndex('counts')]",
                                "emailAddress": "[parameters('emailReceiverAddress')[copyIndex('counts')]]"
                            }
                        ]
                    }
                }
            ]
        }
    }
] }

如何在PHP 7.2中替换mysql_result？

1 个答案: