如何获取表单标签中的action属性以使其正常工作？
[英]how can I get the action attribute in form tag to work correctly?
问题描述
我知道标记表单有一个称为action的属性，我知道action是如何工作的，这就是我的用法
<form method="post" action = "registerd.php">
</form>
还存在registered.php页面。 现在，我正在使用php验证以标签形式进行一些验证，但是为什么不首先验证值就跳到registered.php页面？ 是否有其他解决方案，而不是在php代码末尾使用标头，例如：
header("location : registerd.php")
这是我正在编写的全部代码，非常感谢
<div id = "content">
<?php
$fnameErr = "";
$lnameErr = "";
$idErr = "";
$placeErr = "";
$dateErr = "";
$emailErr = "";
$pswErr = "";
$file;
$content = "";
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if(isset($_POST['register'])){
if(isset($_POST['firstname'])){
if(!empty($_POST['firstname'])){
if(strlen($_POST['firstname'])>1){
if(preg_match("/[a-zA-Z]+/", $_POST['firstname'])==1){
$firstname = test_input($_POST['firstname']);
$content .= "firstname:";
$content .= $firstname;
$content .= " ";
}
else{
$fnameErr = "your first name should only include letters";
}
}
else{
$fnameErr = "your first name must be at least 2 characters";
}
}
else{
$fnameErr = "enter your first name";
}
}
else{
$fnameErr = "enter your first name";
}
if(isset($_POST['lastname'])){
if(!empty($_POST['lastname'])){
if(strlen($_POST['lastname'])>3){
if(preg_match("/[a-zA-Z]+/", $_POST['lastname'])==1){
$lastname = test_input($_POST['lastname']);
$content .= "lastname:";
$content .= $lastname;
$content .= " ";
}
else{
$lnameErr = "your last name should only include letters";
}
}
else{
$lnameErr = "your last name must be at least 2 characters";
}
}
else{
$lnameErr = "enter your last name";
}
}
else{
$lnameErr = "enter your last name";
}
if(isset($_POST['idnum'])){
if(!empty($_POST['idnum'])){
if(strlen($_POST['idnum'])==10){
if(preg_match("/[0-9]{10}/", $_POST['idnum'])==1){
$idnum = test_input($_POST['idnum']);
$content .= "ID_No.:";
$content .= $idnum;
$content .= " ";
}
else{
$idErr = "your ID number should only include digits";
}
}
else{
$idErr = "your ID number must be 10 digits";
}
}
else{
$idErr = "enter your ID number";
}
}
else{
$idErr = "enter your ID number";
}
if(isset($_POST['placeOfBirth'])){
if(!empty($_POST['placeOfBirth'])){
if(strlen($_POST['placeOfBirth'])>2){
if(preg_match("/[a-zA-Z]+/", $_POST['placeOfBirth'])==1){
$placeOfBirth = test_input($_POST['placeOfBirth']);
$content .= "placeOfBirth:";
$content .= $placeOfBirth;
$content .= " ";
}
else{
$placeErr = "your place of birth should only include digits";
}
}
else{
$placeErr = "your place of birth must be at least 3 letters";
}
}
}
if(isset($_POST['date'])){
if(!empty($_POST['date'])){
$date = test_input($_POST['date']);
$content .= "date:";
$content .= $date;
$content .= " ";
}
else{
$dateErr = "enter your date of birth";
}
}
else{
$dateErr = "enter your date of birth";
}
if(isset($_POST['email'])){
if(!empty($_POST['email'])){
$email = test_input($_POST['email']);
$content .= "email:";
$content .= $email;
$content .= " ";
}
else{
$emailErr = "enter your email";
}
}
else{
$emailErr = "enter your email";
}
if(isset($_POST['password'])){
if(!empty($_POST['password'])){
if(preg_match("/(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\s).*$/", $_POST['password'])==1){
$password = test_input($_POST['password']);
$content .= "password:";
$content .= $password;
$content .= " ";
}
else{
$pswErr = "your password should have numbers, uppercase<br/> & lowercase letters";
}
}
else{
$pswErr = "enter your password";
}
}
else{
$pswErr = "enter your password";
}
if(file_exists($email.".txt")){
echo(
"<script>
alert('this email already exists!');
</script>"
);
$firstname = $lastname = $idnum = $date = $placeOfBirth = $password = "";
}
else{
$file = fopen($email.".txt","a+") or die("Unable to open file!");
fwrite($file, $content);
fclose($file);
header("location: registered.php");
}
}
?>
<fieldset id = "fieldset">
<legend><h1 class = "reg" >Register Form</h1></legend>
<form method="post" action="#" enctype = "multipart/form-data">
<table class = "table">
<tr>
<td class = "labels">
<p class = "star">*</p> First Name
</td>
<td><input class = "inclass" type="text" required="required" placeholder="Please enter your first name" id = "firstname" name="firstname" onclick = "colorBorder(this.id)"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $fnameErr;
?>
</span>
</td>
<tr>
<td class = "labels"><p class = "star">*</p> Last Name</td>
<td><input class = "inclass" type="text" required="required" placeholder="Please enter your last name" name="lastname" id = "lastname" onclick = "colorBorder(this.id)"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $lnameErr;
?>
</span>
</td>
<tr>
<td class = "labels">Gender</td>
<td>
<input class = "inclass" type="radio" name="gender" value="0" /><p class = "radio" >Male</p>
<input class = "inclass" type="radio" name="gender" value="1" /><p class = "radio" >Female</p>
</td>
</tr>
<tr>
<td class = "labels"><p class = "star">*</p> ID Number</td>
<td><input class = "inclass" type="text" id="idnum" required="required" placeholder="Please enter your ID number" name="idnum" onclick = "colorBorder(this.id)"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $idErr;
?>
</span>
</td>
<tr>
<td class = "labels">Place of Birth</td>
<td><input class = "inclass" type="text" placeholder="Please enter your place of birth" name="placeOfBirth" id = "place" onclick = "colorBorder(this.id)"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $placeErr;
?>
</span>
</td>
<tr>
<td class = "labels"><p class = "star">*</p> Date Of Birth</td>
<td><input class = "inclass" type="date" id = "date" name="date"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $dateErr;
?>
</span>
</td>
<tr>
<td class = "labels"><p class = "star">*</p> Email</td>
<td><input class = "inclass" type="email" required="required" placeholder="Please enter your email" name="email" id = "email" onclick = "colorBorder(this.id)"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $emailErr;
?>
</span>
</td>
<tr>
<td class = "labels"><p class = "star">*</p> Passwords</td>
<td><input class = "inclass" type="password" required="required" placeholder="Please enter your password" name="password" id = "password" onclick = "colorBorder(this.id)"/></td>
</tr>
<td class = "err">
<span>
<?php
echo $pswErr;
?>
</span>
</td>
<tr>
<td><input type="submit" name="register" value="register" class="save"/></td>
<td><input type="reset" name = "reset" id = "reset"/></td>
</tr>
</table>
</form>
</fieldset>
</div>
3 个解决方案
解决方案1
2 2016-06-24 14:41:29
在register.php上写下您的php验证代码，如果值没有得到验证，则使用标头函数重定向到您的表单页面。
header("location : form.php")
解决方案2
1 2016-06-24 14:58:15
下面采用的方法绕过了isset的多余使用。 这也意味着在检查是否已设置“提交按钮值”之后，立即检查所有$_POST['data']变量是否已合并到代码的一部分。 函数function test_input($data) {...}已被完全删除，因为上述部分也做同样的事情...为了简明起见，多行字符串连接被压缩为一行。到处都是多余的if(){...}else{...}子句。 这些被忽略，因为它们可能对原始海报有用（尽管不太可能）。 最后，确保将表单回发到当前执行脚本（考虑到表单数据的处理在同一脚本中）； 我们将保留表单EMPTY的action属性：这意味着表单将自动回发到其自身-当前脚本。
<?php
// AT THE VERY TOP OF THE SCRIPT - PREFERABLY NOT WITHIN A DIV OR ANY CONTAINER, START YOUR PHP CODES...
$fnameErr = "";
$lnameErr = "";
$idErr = "";
$placeErr = "";
$dateErr = "";
$emailErr = "";
$pswErr = "";
$content = "";
$file;
if(isset($_POST['register'])){
// GATHER A FILTERED VERSION OF THE POST VARIABLES:
$firstName = isset($_POST['firstname']) ? htmlspecialchars(stripslashes(trim($_POST['firstname']))) : null;
$lastName = isset($_POST['lastname']) ? htmlspecialchars(stripslashes(trim($_POST['lastname']))) : null;
$idNum = isset($_POST['idnum']) ? htmlspecialchars(stripslashes(trim($_POST['idnum']))) : null;
$placeOfBirth = isset($_POST['placeOfBirth']) ? htmlspecialchars(stripslashes(trim($_POST['placeOfBirth']))) : null;
$date = isset($_POST['date']) ? htmlspecialchars(stripslashes(trim($_POST['date']))) : null;
$email = isset($_POST['email']) ? htmlspecialchars(stripslashes(trim($_POST['email']))) : null;
$password = isset($_POST['password']) ? htmlspecialchars(stripslashes(trim($_POST['password']))) : null;
if($firstName){
if(!empty($firstName)){
if(strlen($firstName)>1){
if(preg_match("/[a-zA-Z]+/", $firstName)==1){
$content .= "firstname:" . $firstName . " ";
}
else{
$fnameErr = "Your first name should only include letters";
}
}
else{
$fnameErr = "Your first name must be at least 2 characters";
}
}
else{
$fnameErr = "Enter your first name";
}
}else{
$fnameErr = "Enter your first name";
}
if(isset($lastName)){
if(!empty($lastName)){
if(strlen($lastName)>3){
if(preg_match("/[a-zA-Z]+/", $_POST['lastname'])==1){
$content .= "lastname:" . $lastName . " ";
}
else{
$lnameErr = "Your last name should only include letters";
}
}
else{
$lnameErr = "Your last name must be at least 2 characters";
}
}
else{
$lnameErr = "Enter your last name";
}
}else{
$lnameErr = "Enter your last name";
}
if(isset($idNum)){
if(!empty($idNum)){
if(strlen($idNum) == 10){
if(preg_match("/[0-9]{10}/", $_POST['idnum'])==1){
$content .= "ID_No.:" . $idNum . " ";
}
else{
$idErr = "Your ID number should only include digits";
}
}
else{
$idErr = "Your ID number must be 10 digits";
}
}
else{
$idErr = "Enter your ID number";
}
}else{
$idErr = "Enter your ID number";
}
if(isset($placeOfBirth)){
if(!empty($placeOfBirth)){
if(strlen($placeOfBirth)>2){
if(preg_match("/[a-zA-Z]+/", $placeOfBirth)==1){
$content .= "placeOfBirth:" . $placeOfBirth . " ";
}
else{
$placeErr = "Your place of birth should only include digits";
}
}else{
$placeErr = "Your place of birth must be at least 3 letters";
}
}
}
if(isset($date)){
if(!empty($date)){
$content .= "date:" . $date . " ";
}else{
$dateErr = "Enter your date of birth";
}
}else{
$dateErr = "Enter your date of birth";
}
if(isset($email)){
if(!empty($email)){
$content .= "email:" . $email . " ";
}else{
$emailErr = "Enter your email";
}
}else{
$emailErr = "Enter your email";
}
if(isset($password)){
if(!empty($password)){
if(preg_match("/(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\s).*$/", $password)==1){
$content .= "password:" . $password . " ";
}else{
$pswErr = "Your password should have numbers, uppercase<br/> & lowercase letters";
}
}else{
$pswErr = "Enter your password";
}
}else{
$pswErr = "Enter your password";
}
if(file_exists($email.".txt")){
echo "<script type='text/javascript'>alert('this email already exists!');</script>";
$firstname = $lastname = $idnum = $date = $placeOfBirth = $password = "";
}
else{
$file = fopen($email.".txt","a+") or die("Unable to open file!");
fwrite($file, $content);
fclose($file);
header("location: registered.php");
}
}
?>
<div id = "content">
<fieldset id = "fieldset">
<legend><h1 class = "reg" >Register Form</h1></legend>
<!-- SINCE YOUR VALIDATION IS IN THE CURRENT SCRIPT, LEAVING THE action ATTRIBUTE EMPTY IMPLIES THAT THE FORM WILL POST BACK TO ITSELF [THE CURRENT SCRIPT]. -->
<form method="POST" action="" enctype = "multipart/form-data">
<table class = "table">
<tr>
<td class = "labels">
<p class = "star">*</p> First Name
</td>
<td>
<input class = "inclass" type="text" required="required" placeholder="Please enter your first name" id = "firstname" name="firstname" onclick = "colorBorder(this.id)"/>
</td>
<td class = "err">
<span><?php echo $fnameErr; ?></span>
</td>
</tr>
<tr>
<td class = "labels"><p class = "star">*</p> Last Name</td>
<td>
<input class = "inclass" type="text" required="required" placeholder="Please enter your last name" name="lastname" id = "lastname" onclick = "colorBorder(this.id)"/>
</td>
<td class = "err">
<span><?php echo $lnameErr; ?></span>
</td>
</tr>
<tr>
<td class = "labels">Gender</td>
<td>
<input class = "inclass" type="radio" name="gender" value="0" /><p class = "radio" >Male</p>
<input class = "inclass" type="radio" name="gender" value="1" /><p class = "radio" >Female</p>
</td>
</tr>
<tr>
<td class = "labels"><p class = "star">*</p> ID Number</td>
<td>
<input class = "inclass" type="text" id="idnum" required="required" placeholder="Please enter your ID number" name="idnum" onclick = "colorBorder(this.id)"/>
</td>
<td class = "err">
<span><?php echo $idErr; ?></span>
</td>
</tr>
<tr>
<td class = "labels">Place of Birth</td>
<td>
<input class = "inclass" type="text" placeholder="Please enter your place of birth" name="placeOfBirth" id = "place" onclick = "colorBorder(this.id)"/>
</td>
<td class = "err">
<span><?php echo $placeErr; ?></span>
</td>
</tr>
<tr>
<td class = "labels"><p class = "star">*</p> Date Of Birth</td>
<td>
<input class = "inclass" type="date" id = "date" name="date"/>
</td>
<td class = "err">
<span><?php echo $dateErr; ?></span>
</td>
</tr>
<tr>
<td class = "labels"><p class = "star">*</p> Email</td>
<td>
<input class = "inclass" type="email" required="required" placeholder="Please enter your email" name="email" id = "email" onclick = "colorBorder(this.id)"/>
</td>
<td class = "err">
<span><?php echo $emailErr; ?></span>
</td>
</tr>
<tr>
<td class = "labels"><p class = "star">*</p> Passwords</td>
<td>
<input class = "inclass" type="password" required="required" placeholder="Please enter your password" name="password" id = "password" onclick = "colorBorder(this.id)"/>
</td>
<td class = "err">
<span><?php echo $pswErr; ?></span>
</td>
</tr>
<tr>
<td> </td>
<td><input type="submit" name="register" value="register" class="save"/></td>
<td><input type="reset" name = "reset" id = "reset"/></td>
</tr>
</table>
</form>
</fieldset>
</div>
解决方案3
1 已采纳 2016-06-24 16:00:52
我相信解决您问题的方法是将代码分开，将HTML放在一个文件中（“ form.php”），将PHP验证在另一个文件中（“ validate.php”）：
- “ form.php”将收集数据，表单的“动作”将执行“ validate.php”。
- “ validate.php”将验证数据，如果未发现错误，则将其“标头”存储到“ registered.php”，如果发现错误，则将消息存储在$ _SESSION中，并将“标头”存储回“ form.php”，其中将显示该消息。
范例：
form.php的
<?php
session_start(); // NECESSARY TO USE $_SESSION.
?>
<html>
<body>
<form action="validate.php" method="post">
Enter 0 or 1 : <input type="text" name="num"/>
<br/>
<input type="submit" value="Submit"/>
</form>
<?php
// CHECK IF THERE IS ERROR MESSAGE FROM VALIDATION.
if ( isset( $_SESSION[ "err_msg" ] ) )
{ echo $_SESSION[ "err_msg" ];
unset( $_SESSION[ "err_msg" ] ); // VERY IMPORTANT : DESTROY ERROR MESSAGE.
}
?>
</body>
</html>
validate.php
<?php
session_start(); // NECESSARY TO USE $_SESSION.
if ( isset( $_POST[ "num" ] ) ) // IF CALLED FROM "FORM.PHP"
{ $num = $_POST[ "num" ];
if ( ( $num == "0" ) || ( $num == "1" ) ) // VALIDATE NUMBER.
header( "Location: registered.php" ); // NO ERROR.
else { $_SESSION[ "err_msg" ] = "Number must be 0 or 1."; // MESSAGE.
header( "Location: form.php" ); // ERROR.
}
}
else header( "Location: form.php" ); // WASN'T CALLED FROM "FORM.PHP".
?>
创建两个具有给定名称的文件，然后复制粘贴先前的代码，然后运行“ form.php”。
您将必须将所有巨大的验证粘贴到“ validate.php”中。 您的验证有很多消息，建议您在每条消息后插入一个“标头”，并在其后立即添加“退出”（因为“标头”不会停止脚本的执行）。
当窗体的动作属性位于弹出窗口中时，如何将其定向到自身？
[英]How can I direct a form's action attribute to itself when it is in a popup window?
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.