Question

它正在工作，但现在它停止工作为什么？最好写入文件并保存。昨天它正在工作，但今天它停止了，我无法弄清楚为什么搜索互联网，但我仍然无法做到。

先谢谢

<!DOCTYPE html>
<html>
<head>
    <title>Contact us</title>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>  
           <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />  
           <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>

<nav class="navbar navbar-default">
      <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>

        </div>

        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
          <ul class="nav navbar-nav">
            <li><a href="aboutus.html">About US</a></li>
            <li><a href="contactus.php">Contact Us</a></li>
            <li><a href="property.php">Propertys</a></li>
          </ul>

        </div><!-- /.navbar-collapse -->
      </div><!-- /.container-fluid -->
    </nav>

    <h1>Contact us</h1>

    <form  method="post" action="contactus.php" >

        <label>Email</label>
        <input type="text" name="email" required>
        <br>
        <label>Mobile number</label>
        <input type="number" name="number" required>
        <br>
        <textarea name="comments" required></textarea>

        <button name="submit" type="submit"> submit</button>


    </form>

    <?php

            if(isset($_POST['submit'])){
        $number = $_POST["number"];
        $email = $_POST["email"];

        $trueemail;


        $massage = $_POST["comments"];


        if(isset($number)){



            if (strlen($number) == 8) {

                $truenumber = true;
            }else{

                echo "Input your mobile number";

            }
        }   


        if(isset($email)){
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            echo "<br>";
            echo "Enter a valid email";
        }else{
            $trueemail = true;
        }
    }

    if($trueemail == true && $truenumber == true){
    writeToFile($email,$number,$massage);


    function writeToFile($trueemail,$truenumber,$massage)   
    {

            $myfile = fopen("contectus.txt", "w") or die("Unable to open file!");
            fwrite($myfile, $trueemail . PHP_EOL);
            fwrite($myfile, $truenumber . PHP_EOL);
            fwrite($myfile, $massage . PHP_EOL);
            fclose($myfile);
    }
}
}



    ?>

</body>
</html>

Answer 1

在您宣布此功能之前，您正在调用writeToFile($email,$number,$massage);。

在函数声明后移动writeToFile($email,$number,$massage);，您的代码将正常工作。

Answer 2

如果有条件，请把功能放在外面。像这样的东西

function writeToFile($trueemail,$truenumber,$massage)   
    {

            $myfile = fopen("contectus.txt", "w") or die("Unable to open file!");
            fwrite($myfile, $trueemail . PHP_EOL);
            fwrite($myfile, $truenumber . PHP_EOL);
            fwrite($myfile, $massage . PHP_EOL);
            fclose($myfile);
    }

if($trueemail == true && $truenumber == true){
    writeToFile($email,$number,$massage);

}

Answer 3

尝试以下代码：

将提交事件从页面开始。

你不能在没有定义之前调用函数。

 <?php

    function writeToFile($trueemail,$truenumber,$massage)   
{

        $myfile = fopen("contectus.txt", "w") or die("Unable to open file!");
        fwrite($myfile, $trueemail . PHP_EOL);
        fwrite($myfile, $truenumber . PHP_EOL);
        fwrite($myfile, $massage . PHP_EOL);
        fclose($myfile);
}


        if(isset($_POST['submit'])){
    $number = $_POST["number"];
    $email = $_POST["email"];

    $trueemail;


    $massage = $_POST["comments"];


    if(isset($number)){



        if (strlen($number) == 8) {

            $truenumber = true;
        }else{

            echo "Input your mobile number";

        }
    }   


    if(isset($email)){
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        echo "<br>";
        echo "Enter a valid email";
    }else{
        $trueemail = true;
    }
}

if($trueemail == true && $truenumber == true){
writeToFile($email,$number,$massage); 
}  } ?>

未捕获错误：调用未定义的函数

3 个答案: