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Exemple de formulaire PHP complet

PHP - Assurer la valeur d'entrée dans le formulaire

Après que l'utilisateur clique sur le bouton de soumission, afin de garantir que la valeur du champ est saisie correctement, nous insérons un script PHP dans l'élément d'entrée du HTML. Chaque champ est nommé?: nom, email et site Web. Dans le champ textarea de la note, nous pla?ons le script entre les balises <textarea>

Les valeurs de sortie du script PHP sont?: les variables $name, $email, $website et $comment.

Ensuite, nous devons également cocher le bouton radio sélectionné. Pour cela, nous devons définir l'attribut coché (et non l'attribut value du bouton radio)?:

<form. method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
Nom?: <input type="text" name="name" value= "<?php echo $name;?>">
<span class="error">* <?php echo $nameErr;?></span>
< br><br>
E-mail?: <input type="text" name="email" value="<?php echo $email;?>">
<span class ="erreur">* <?php echo $emailErr;?></span>
<br><br>
Site Web?: <input type="text" name=" website" value="<?php echo $website;?>">
<span class="error"><?php echo $websiteErr;?></span>
<br><br>
Remarque?: <textarea name="comment" rows="5" cols="40"><?php echo $comment;?></textarea>
<br><br>
Genre?:
<input type="radio" name="gender" <?php if (isset($gender) && $gender=="female ") echo "checked";?> value="female">女
<input type="radio" name="gender" <?php if (isset($gender) && $gender== "male") echo "checked";?> value="male">Male
<span class="error">* <?php echo $genderErr;?></span>
<br><br>
<input type="submit" name="submit" value="Submit">
</form>

PHP - Exemple de formulaire complet

Ce qui suit est l'exemple de code complet de validation de formulaire PHP?:

Exemple

<!DOCTYPE HTML> 
<html>
<head>
<meta charset="utf-8">
<title>PHP中文網(wǎng)</title>
<style>
.error {color: #FF0000;}
</style>
</head>
<body> 
<?php
// 定義變量并默認(rèn)設(shè)置為空值
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
    if (empty($_POST["name"]))
    {
        $nameErr = "名字是必需的";
    }
    else
    {
        $name = test_input($_POST["name"]);
        // 檢測名字是否只包含字母跟空格
        if (!preg_match("/^[a-zA-Z ]*$/",$name))
        {
            $nameErr = "只允許字母和空格"; 
        }
    }
    
    if (empty($_POST["email"]))
    {
      $emailErr = "郵箱是必需的";
    }
    else
    {
        $email = test_input($_POST["email"]);
        // 檢測郵箱是否合法
        if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email))
        {
            $emailErr = "非法郵箱格式"; 
        }
    }
    
    if (empty($_POST["website"]))
    {
        $website = "";
    }
    else
    {
        $website = test_input($_POST["website"]);
        // 檢測 URL 地址是否合法
        if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website))
        {
            $websiteErr = "非法的 URL 的地址"; 
        }
    }
    
    if (empty($_POST["comment"]))
    {
        $comment = "";
    }
    else
    {
        $comment = test_input($_POST["comment"]);
    }
    
    if (empty($_POST["gender"]))
    {
        $genderErr = "性別是必需的";
    }
    else
    {
        $gender = test_input($_POST["gender"]);
    }
}
function test_input($data)
{
    $data = trim($data);
    $data = stripslashes($data);
    $data = htmlspecialchars($data);
    return $data;
}
?>
<h2>PHP 表單驗(yàn)證實(shí)例</h2>
<p><span class="error">* 必需字段。</span></p>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> 
   名字: <input type="text" name="name" value="<?php echo $name;?>">
   <span class="error">* <?php echo $nameErr;?></span>
   <br><br>
   E-mail: <input type="text" name="email" value="<?php echo $email;?>">
   <span class="error">* <?php echo $emailErr;?></span>
   <br><br>
   網(wǎng)址: <input type="text" name="website" value="<?php echo $website;?>">
   <span class="error"><?php echo $websiteErr;?></span>
   <br><br>
   備注: <textarea name="comment" rows="5" cols="40"><?php echo $comment;?></textarea>
   <br><br>
   性別:
   <input type="radio" name="gender" <?php if (isset($gender) && $gender=="female") echo "checked";?>  value="female">女
   <input type="radio" name="gender" <?php if (isset($gender) && $gender=="male") echo "checked";?>  value="male">男
   <span class="error">* <?php echo $genderErr;?></span>
   <br><br>
   <input type="submit" name="submit" value="Submit"> 
</form>
<?php
echo "<h2>您輸入的內(nèi)容是:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>
</body>
</html>

Exécuter un exemple?

Le résultat de l'exécution dans l'exemple est similaire à la figure suivante?:


102.jpg

Formation continue
||
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>PHP中文網(wǎng)</title> <style> .error {color: #FF0000;} </style> </head> <body> <?php // 定義變量并默認(rèn)設(shè)置為空值 $nameErr = $emailErr = $genderErr = $websiteErr = ""; $name = $email = $gender = $comment = $website = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { if (empty($_POST["name"])) { $nameErr = "名字是必需的"; } else { $name = test_input($_POST["name"]); // 檢測名字是否只包含字母跟空格 if (!preg_match("/^[a-zA-Z ]*$/",$name)) { $nameErr = "只允許字母和空格"; } } if (empty($_POST["email"])) { $emailErr = "郵箱是必需的"; } else { $email = test_input($_POST["email"]); // 檢測郵箱是否合法 if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) { $emailErr = "非法郵箱格式"; } } if (empty($_POST["website"])) { $website = ""; } else { $website = test_input($_POST["website"]); // 檢測 URL 地址是否合法 if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) { $websiteErr = "非法的 URL 的地址"; } } if (empty($_POST["comment"])) { $comment = ""; } else { $comment = test_input($_POST["comment"]); } if (empty($_POST["gender"])) { $genderErr = "性別是必需的"; } else { $gender = test_input($_POST["gender"]); } } function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; } ?> <h2>PHP 表單驗(yàn)證實(shí)例</h2> <p><span class="error">* 必需字段。</span></p> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> 名字: <input type="text" name="name" value="<?php echo $name;?>"> <span class="error">* <?php echo $nameErr;?></span> <br><br> E-mail: <input type="text" name="email" value="<?php echo $email;?>"> <span class="error">* <?php echo $emailErr;?></span> <br><br> 網(wǎng)址: <input type="text" name="website" value="<?php echo $website;?>"> <span class="error"><?php echo $websiteErr;?></span> <br><br> 備注: <textarea name="comment" rows="5" cols="40"><?php echo $comment;?></textarea> <br><br> 性別: <input type="radio" name="gender" <?php if (isset($gender) && $gender=="female") echo "checked";?> value="female">女 <input type="radio" name="gender" <?php if (isset($gender) && $gender=="male") echo "checked";?> value="male">男 <span class="error">* <?php echo $genderErr;?></span> <br><br> <input type="submit" name="submit" value="Submit"> </form> <?php echo "<h2>您輸入的內(nèi)容是:</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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