Question

我刚刚开始使用PHP，我一直在尝试验证HTML表单，然后将表单的数据发布到另一个页面上，由于某种原因，这似乎并不令人满意想要工作问题是，当单击提交时，如果没有错误，页面只会刷新。以下是代码片段：

<?php
$nameErr = $surnameErr =  " ";
$name = $surname =  " ";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $valid = 0;

    if (empty($_POST["name"])) {
    $nameErr = "Name is required";
        $valid++;
    } else {
    $name = test_input($_POST["name"]);
    // check if name only contains letters and whitespace
    if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
    $nameErr = "Only letters and white space allowed"; 

    }
    }

    if (empty($_POST["surname"])) {
    $surnameErr = "Surname is required";
    $valid++;
    } else {
    $surname = test_input($_POST["surname"]);
    // check if name only contains letters and whitespace
    if (!preg_match("/^[a-zA-Z ]*$/",$surname)) {
    $surnameErr = "Only letters and white space allowed"; 

    }
    }

    if($valid == 0){
        header('LOCATION: page2.php');
        exit();
    }

}

function test_input($data) {
   $data = trim($data);
   $data = stripslashes($data);
   $data = htmlspecialchars($data);
   return $data;
}
?>

这是HTML

<form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']);?>"> 

<div class="label1">
    <label>First Name</label> 
    <input type="text" name="name" id="name" placeholder="John" value="<?php echo $name;?>" onblur="validateName('name')">  

    <label>Surname</label> 
    <input type="text" name="surname" id="surname" placeholder="Smith" value="<?php echo $surname;?>" onblur="validateSurname('surname')"> <br />

    <input type="submit" name="submit" value="Submit"> 
</div>
</form>

使page2.php

<html>
<body>

Welcome <?php echo $_POST["name"]; ?><br>
Your surname is: <?php echo $_POST["surname"]; ?>

</body>
</html>

Answer 1

执行header('LOCATION: page2.php');后，您将丢失page2.php中无法使用的所有已发布数据。

有几种解决方案，例如：

使用include代替header重定向;
将发布的数据存储在会话或数据库中，以便在其他页面中可用。

我没有看到您在此处无法使用include的任何理由，是否有您想要重定向的特定原因？

Answer 2

试试这个

 **main page**

<form method="post" action="page2.php"> 
<div class="label1">
<label>First Name</label> 
<input type="text" name="name" id="name" placeholder="John" onblur="validateName('name')">  

<label>Surname</label> 
<input type="text" name="surname" id="surname" placeholder="Smith" onblur="validateSurname('surname')"> <br />

<input type="submit" name="submit" value="submit"> 
</div>
</form>


**page2.php**
<?php

if (isset($_POST['submit'])) {
$valid = 0;

if (empty($_POST["name"])) {
$name = "Name is required";
    $valid++;
} else {
$name = test_input($_POST["name"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
$name = "Only letters and white space allowed"; 
}
    else{$name=$_POST["name"];}
}

if (empty($_POST["surname"])) {
$surname = "Surname is required";
$valid++;
} else {
$surname = test_input($_POST["surname"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Z ]*$/",$surname)) {
    $surname = "Only letters and white space allowed"; 

}        else{$surname=$_POST["surname"];}
}

}

function test_input($data) {
 $data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<html>
<body>

Welcome <?=$name?><br>
Your surname is: <?=$surname?>

</body>
</html>

PHP表单数据在提交后未发布

2 个答案: