Question

我是php和mysql的绝对初学者..我想把（年，月，需求）放在数据库中的（表）中，但是var_dump显示Bool（false）并且没有任何东西被传递到数据库...它还显示已成功注册的警报。这是我的完整代码

<html>
    <head>
        <title>Simulation</title>
    </head>
    <body>
        <h2>Registration Page</h2>
        <a href="home.php"> Click here to go back </a><br/><br/>
        <form action="register.php" method="POST">
           Enter year: <input type="number" name="year" required="required" /> <br/>
           Enter month: <input type="number" name="month" required="required" /> <br/>
           Enter demand: <input type="number" name="demand" required="required" /> <br/>
           <input type="submit" value="Register"/>
        </form>
    </body>
</html>

<?php
    if ($_SERVER["REQUEST_METHOD"] == "POST")
    {
        $year = mysql_real_escape_string ($_POST['year']);
        $month = mysql_real_escape_string ($_POST['month']);
        $demand = mysql_real_escape_string ($_POST['demand']);

        echo " year is" .$year. "<br/>";
        echo " month is" .$month. "<br/>";
        echo " demand is" .$demand;

        mysql_connect("localhost", "root","") or die(mysql_error()); //Connect to server
        mysql_select_db("first_db") or die("Cannot connect to database"); //Connect to database

        $qu = mysql_query("INSERT INTO table (year, month, demand) VALUES ('$year','$month','$demand')"); //Inserts the value to table users
        var_dump ($qu);
        die();
        Print '<script>alert("Successfully Registered!");</script>'; // Prompts the user
        Print '<script>window.location.assign("register.php");</script>'; // redirects to register.php
    }

?>

Answer 1

问题已解决，将整个表更改为名为users的新表是一个保留字。并编写像

这样的查询

$qu = mysql_query("INSERT INTO users (year, month, demand) VALUES ('$year','$month','$demand')");

Answer 2

table是保留字，您必须更改您的表名并使用以下查询：

INSERT INTO Table_Name (year, month, demand) VALUES ('$year','$month','$demand')

Answer 3

如果$ qu返回false意味着查询存在某种错误且无法执行

在这一行

$qu = mysql_query("INSERT INTO table (year, month, demand) VALUES ('$year','$month','$demand')");

你必须添加更多这样的字符串：

$qu = mysql_query("INSERT INTO table (year, month, demand) VALUES ('".$year."','".$month."','".$demand."')");

var_dump返回bool（false）

3 个答案: