Contoh borang lengkap PHP
Bahagian ini menunjukkan cara untuk mengekalkan nilai dalam medan input selepas pengguna menyerahkan borang
PHP - Pastikan nilai input dalam borang
Selepas pengguna mengklik butang hantar, untuk memastikan bahawa nilai medan adalah Input adalah betul Kami memasukkan skrip PHP ke dalam elemen input HTML Setiap medan dinamakan: nama, e-mel dan tapak web. Dalam medan textarea dalam nota,
kami meletakkan skrip di antara teg <textarea>
Nilai output skrip PHP ialah: $name, $email, $website dan $comment variables.
Kemudian, kita juga perlu menyemak butang radio yang dipilih Untuk ini, kita mesti menetapkan atribut yang diperiksa (bukan atribut nilai butang radio):
<borang. method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
Nama: <input type="text" name="name" value= "<?php echo $name;?>">
<span class="error">* <?php echo $nameErr;?></span>
< br><br>
E-mel: <input type="text" name="email" value="<?php echo $email;?>">
<span class ="error">* <?php echo $emailErr;?></span>
<br><br>
URL: <input type="text" name=" laman web" value="<?php echo $website;?>">
<span class="error"><?php echo $websiteErr;?></span>
<br><br>
Nota: <textarea name="comment" rows="5" cols="40"><?php echo $comment;?></textarea>
<br><br>
Jantina:
<input type="radio" name="gender" <?php if (isset($gender) && $gender=="female ") echo "checked";?> value="female">female
<input type="radio" name="gender" <?php if (isset($jantina) && $jantina== "lelaki") gema "ditanda";?> value="lelaki">Lelaki
<span class="error">* <?php echo $genderErr;?></span>
<br><br>
<input type="submit" name="submit" value="Submit">
</form>
PHP - Contoh borang lengkap
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>PHP中文網(wǎng)(runoob.com)</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("/^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/",$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="提交">
</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>Hasil berjalan program:
