Question

我的PHP代码有问题，我是初学者，我需要一些帮助。我试图创建一个函数，它将使用write在3个变量的文件中写入输入文本，但似乎当我将所有内容都放入函数时它无法正常工作。

这是我的代码：

<!doctype html>
<head>
<meta charset="UTF-8">
<title>test</title>
</head>
<form action="test.php" method="post">
<input type="text" name="text">
<input type="text" name="text1">
<input type="text" name="text2">
<input type="submit" name="submit" value="write">
</form>
<?php



$text = $_POST['text'];
$text1 = $_POST['text1'];
$text2 = $_POST['text2'];
function start($text,$text1,$text2)
{
    if(isset($_POST['submit']))
    {
        $text_total = "$text $text1 $text2 \r\n";
        $file = fopen("text.txt", "a+");
        fwrite($file, $text_total);
        fclose($file);
    }
}

start();

?>
<body>
</body>
</html>

Answer 1

将字符串参数传递给函数调用

 <?php


    $text = $_POST['text'];
    $text1 = $_POST['text1'];
    $text2 = $_POST['text2'];
    function start($text,$text1,$text2)
    {
        if(isset($_POST['submit']))
        {
            $text_total = "$text $text1 $text2 \r\n";
            $file = fopen("text.txt", "a+");
            fwrite($file, $text_total);
            fclose($file);
        }
    }

    start($text,$text1,$text2);

    ?>

Answer 2

您的函数参数缺失是您的问题。还要检查表单是否已提交。这是为了更好的练习。

<?php

function start($text,$text1,$text2)
{
  if(isset($_POST['submit']))
  {
    $text_total = "$text $text1 $text2 \r\n";
    $file = fopen("text.txt", "a+");
    fwrite($file, $text_total);
    fclose($file);
 }
}

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

  unset($_POST['submit']); //This is to make sure it's executed one time only

  $text = $_POST['text'];
  $text1 = $_POST['text1'];
  $text2 = $_POST['text2'];
  start($text,$text1,$text2);
}


?>

Answer 3

您必须在test.php文件中添加：

<?php



$text = $_POST['text'];
$text1 = $_POST['text1'];
$text2 = $_POST['text2'];
function start($text,$text1,$text2)
{
    if(isset($_POST['submit']))
    {
        $text_total = "$text $text1 $text2 \r\n";
        $file = fopen("text.txt", "a+");
        fwrite($file, $text_total);
        fclose($file);
    }
}

start();

你不能和html一起使用

PHP函数不能正常工作

3 个答案: