PHP 无法获取 POST 日期值

Question

我使用PHP/MYSQL创建了简单的数据管理系统，这是我的程序片段:

Search_index.html

<form action="Search_Date.php" method="post">
<p>
<label> Search Date : </label>
<input type = "text" name = "search_date">
<input type = "submit" name = "submit" value = "Search">
</p>
</form>

Search_Date.php

<?php
session_start();
include "dbConfig.php";


$min_length = 1;
$Create_Date = $_POST["search_date"];

function Search_POD_Create_Date($Create_Date)
{
    if(strlen($Create_Date) >= $min_length)
    {`enter code here`
        $POD_serial_no = htmlspecialchars($POD_serial_no); 
        $POD_serial_no = mysql_real_escape_string($POD_serial_no);
        $raw_results = mysql_query("SELECT * FROM model_info WHERE (`time` =          
        '$Create_Date') ");
        return $raw_results;
    }
    else
    {
        return 0;
    }
}

function Show_Search_Table($raw_results)
{
    if(mysql_num_rows($raw_results) > 0)
    { // if one or more rows are returned do following

        while($results = mysql_fetch_array($raw_results))
        {
            echo "<p><h3>".$results['id']." ". $results['team']."   
                 ".$results['user']." ".$results['time']."<br>" ;
            echo "POD_model_no : <br>";
            echo "<h3>".$results['pod_serial_number'];
        }

    }
    else
    { // if there is no matching rows do following
        echo "No results";
    }
}

?>

<?php
Show_Search_Table(Search_POD_Create_Date($Create_Date));
?>

然后当我单击“搜索”按钮时，它显示“无结果”，有什么问题需要我解决吗？请帮助我，谢谢!

Answer 1

首先你必须确保$_POST是否获取到了post数据。因此，在启动 session_start(); 函数后，您可以编写并转储类似 print_r($_POST) 或 var_dump($_POST) 的内容。

然后检查:

if(isset($_POST['search_date']))
{
   echo $_POST['search_date'];
}
else{
   echo "Not fetch value from HTML input field";
}

如果您获得与在 html 输入字段中输入的数据相同的数据，然后尝试您的功能:

function Search_POD_Create_Date($Create_Date){
  // statements
}