极客教程PHP 完整表单
此页面解释了有操作的实时表单。下面的示例将使用文本、单选按钮、下拉菜单和复选框作为输入字段。
示例
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body>
<?php
// define variables and set to empty values
nameErr =emailErr = genderErr =websiteErr = "";
name =email = gender =class = course =subject = "";
if (_SERVER["REQUEST_METHOD"] == "POST") {
if (empty(_POST["name"])) {
nameErr = "Name is required";
}else {name = test_input(_POST["name"]);
}
if (empty(_POST["email"])) {
emailErr = "Email is required";
}else {email = test_input(_POST["email"]);
// check if e-mail address is well-formed
if (!filter_var(email, FILTER_VALIDATE_EMAIL)) {
emailErr = "Invalid email format"; }
}
if (empty(_POST["course"])) {
course = "";
}else {course = test_input(_POST["course"]);
}
if (empty(_POST["class"])) {
class = "";
}else {class = test_input(_POST["class"]);
}
if (empty(_POST["gender"])) {
genderErr = "Gender is required";
}else {gender = test_input(_POST["gender"]);
}
if (empty(_POST["subject"])) {
subjectErr = "You must select 1 or more";
}else {subject = _POST["subject"]; }
}
function test_input(data) {
data = trim(data);
data = stripslashes(data);
data = htmlspecialchars(data);
return data;
}
?>
<h2>Absolute classes registration</h2>
<p><span class = "error">* required field.</span></p>
<form method = "POST" action = "<?php echo htmlspecialchars(_SERVER["PHP_SELF"]);?>">
<table>
<tr>
<td>Name:</td>
<td><input type = "text" name = "name">
<span class = "error">* <?php echo nameErr;?></span>
</td>
</tr>
<tr>
<td>E-mail: </td>
<td><input type = "text" name = "email">
<span class = "error">* <?php echoemailErr;?></span>
</td>
</tr>
<tr>
<td>Time:</td>
<td> <input type = "text" name = "course">
<span class = "error"><?php echo websiteErr;?></span>
</td>
</tr>
<tr>
<td>Classes:</td>
<td> <textarea name = "class" rows = "5" cols = "40"></textarea></td>
</tr>
<tr>
<td>Gender:</td>
<td>
<input type = "radio" name = "gender" value = "female">Female
<input type = "radio" name = "gender" value = "male">Male
<span class = "error">* <?php echogenderErr;?></span>
</td>
</tr>
<tr>
<td>Select:</td>
<td>
<select name = "subject[]" size = "4" multiple>
<option value = "Android">Android</option>
<option value = "Java">Java</option>
<option value = "C#">C#</option>
<option value = "Data Base">Data Base</option>
<option value = "Hadoop">Hadoop</option>
<option value = "VB script">VB script</option>
</select>
</td>
</tr>
<tr>
<td>Agree</td>
<td><input type = "checkbox" name = "checked" value = "1"></td>
<?php if(!isset(_POST['checked'])){ ?>
<span class = "error">* <?php echo "You must agree to terms";?></span>
<?php } ?> </tr>
<tr>
<td>
<input type = "submit" name = "submit" value = "Submit"> </td>
</tr>
</table>
</form>
<?php
echo "<h2>Your given values are as :</h2>";
echo ("<p>Your name isname</p>");
echo ("<p> your email address is email</p>");
echo ("<p>Your class time atcourse</p>");
echo ("<p>your class info class </p>");
echo ("<p>your gender isgender</p>");
for(i = 0;i < count(subject);i++) {
echo(subject[i] . " ");
}
?>
</body>
</html>
它将产生以下结果−
