使用 PHP 验证表单数据-PHP-Tutorial-php.cn

使用 PHP 验证表单数据

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Freigeben： 2016-06-23 13:27:33

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当用户提交表单时，做到以下两件事是非常有必要：

使用 PHP trim() 函数去除用户输入数据中不必要的字符 (如：空格，tab，换行)。

使用PHP stripslashes()函数去除用户输入数据中的反斜杠 (\)

<!DOCTYPE HTML> <html><head></head><body> <?php// define variables and set to empty values$name = $email = $gender = $comment = $website = "";if ($_SERVER["REQUEST_METHOD"] == "POST"){   $name = test_input($_POST["name"]);   $email = test_input($_POST["email"]);   $website = test_input($_POST["website"]);   $comment = test_input($_POST["comment"]);   $gender = test_input($_POST["gender"]);}function test_input($data){   $data = trim($data);   $data = stripslashes($data);   $data = htmlspecialchars($data);   return $data;}?><h2>PHP Form Validation Example</h2><form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">    Name: <input type="text" name="name">   <br><br>   E-mail: <input type="text" name="email">   <br><br>   Website: <input type="text" name="website">   <br><br>   Comment: <textarea name="comment" rows="5" cols="40"></textarea>   <br><br>   Gender:   <input type="radio" name="gender" value="female">Female   <input type="radio" name="gender" value="male">Male   <br><br>   <input type="submit" name="submit" value="Submit"> </form><?phpecho "<h2>Your Input:</h2>";echo $name;echo "<br>";echo $email;echo "<br>";echo $website;echo "<br>";echo $comment;echo "<br>";echo $gender;?></body></html>

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