如何使PHP中需要几个表格字段？
[英]How to make several form fields required in php?
问题描述
I have this form in the index.php file : 
我在index.php文件中有此表格：
<HTML>
<HEAD>
<TITLE>Contact Page</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<table border="0" cellpadding="0" cellspacing="3">
<form method="post" action="thankyou.php">
<tr>
<td>Name:</td>
<td><input name="name" type="text"></td>
</tr>
<tr><td>Your Browser:</td>
<td>
<select name="Browser">
<option value="Internet Explorer" selected>Internet Explorer
<option value="Mozilla">Mozilla
<option value="Other">Other
</select></td>
</tr>
<tr>
<td>Software you use:</td>
<td><input name="Microsoft Word" type="checkbox" value="yes">Microsoft Word<br>
<input name="Microsoft Excel" type="checkbox" value="yes">Microsoft Excel<br>
<input name="Adobe Photoshop" type="checkbox" value="yes">Adobe Photoshop<br>
</td>
</tr>
<tr>
<td>Age:</td>
<td>
<input name="Age" type="radio" value="10-15">10-15<br>
<input name="Age" type="radio" value="16-20">16-20<br>
<input name="Age" type="radio" value="21-90">21-90<br>
</td>
</tr>
<tr><td>Other Comments:</td>
<td><textarea name="Other Comments" rows=10 cols=30></textarea></td>
</tr>
<tr><td> </td><td><input type="submit" value="Send Message"></td>
</tr></form>
</table>
and this is in my thankyou.php : 这是在我的thankyou.php中：
<?php
//This command imports the values from contact.php. Please do not touch.
@import_request_variables("gpc");
//The email address the message will be sent to
$youremail = "youremail@yoursite.com";
//The subject of the email you will receive;
$subject = "Our Survey";
//The page your visitor will be redirected to.
$redirect = "http://www.yoursite.com";
//Time until the page redirects your visitor (seconds)
$secs = "5";
//This takes all of the information from the form and sorts it out. Please leave as is.
foreach ($_POST as $name => $value) {
$thetext = $thetext . "$name : $value\n";
}
?>
<HTML>
<HEAD>
<TITLE>Thank you</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<table cellpadding=0 cellspacing=0>
<tr><td>
<?php
//Checks to see if the name field is empty. You can delete or add fields as needed.
if ((!empty($name))) {
$name = stripslashes($name);
$message = stripslashes($message);
//This is where the email is sent using your values from above.
mail("$youremail", "$subject", "$thetext");
?>
<meta http-equiv="refresh" content="<?php = $secs; ?>;URL=<?php = $redirect; ?>">
Thank you, we have recieved your message.
<p>
You are now being redirected to our <a href="<?php = $redirect; ?>">homepage</a>.
<?php
} else {
?>
We require your name email address and a message in order to reply to your message. Please click <a href="javascript:history.back(1);">here</a> or your browsers back button to try again.
<?php
}
?>
</td></tr>
</table>
I want to make "Your Browser" and/or "Other Comments:" a required field, so if the visitor doesn't fill in at least one of them, he will be redirected to some page which will say, please fill the required fields. 我想将“您的浏览器”和/或“其他评论：”作为必填字段，因此，如果访客未填写其中至少一个，则他将被重定向到某个页面，该页面将显示，请填写必填领域。 If he fills in any of them the form should submit successfully. 如果他填写其中任何一个表格，则应成功提交。 I know there is some basic editing needed, but unfortunately I'm just learning and couldn't do it myself. 我知道需要一些基本的编辑，但是不幸的是，我只是在学习，自己做不到。
Please help. 请帮忙。
2 个解决方案
解决方案1
2 已采纳 2013-05-27 11:32:39
Try this: 尝试这个：
<HTML>
<HEAD>
<TITLE>Contact Page</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<script>
function validateForm()
{
var x=document.forms["my_form"]["name"].value;
var y=document.forms["my_form"]["comments"].value;
if (x==null || x=="")
{
alert("name must be filled out");
return false;
}
if (y==null || y=="")
{
alert("comments must be filled out");
return false;
}
}
</script>
<table border="0" cellpadding="0" cellspacing="3">
<form method="post" action="thankyou.php" name="my_form" onsubmit="return validateForm()">
<tr>
<td>Name:</td>
<td><input name="name" type="text"></td>
</tr>
<tr><td>Other Comments:</td>
<td><textarea name="comments" rows=10 cols=30></textarea></td>
</tr>
<tr><td> </td><td><input type="submit" value="Send Message"></td>
</tr></form>
</table>
This will validate on the same page, so it will be best. 这将在同一页上进行验证，因此将是最好的。
EDIT: 编辑：
For only one, try like this: 仅尝试以下一种方法：
<HTML>
<HEAD>
<TITLE>Contact Page</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<script>
function validateForm()
{
var x=document.forms["my_form"]["name"].value;
var y=document.forms["my_form"]["comments"].value;
var count = 0;
if (!(x==null || x==""))
{
count++;
}
if (!(y==null || y==""))
{
count++;
}
if(count < 1){
alert("Please fill at least one field");
return false;
}
}
</script>
<table border="0" cellpadding="0" cellspacing="3">
<form method="post" action="thankyou.php" name="my_form" onsubmit="return validateForm()">
<tr>
<td>Name:</td>
<td><input name="name" type="text"></td>
</tr>
<tr><td>Other Comments:</td>
<td><textarea name="comments" rows=10 cols=30></textarea></td>
</tr>
<tr><td> </td><td><input type="submit" value="Send Message"></td>
</tr></form>
</table>
解决方案2
1 2013-05-27 11:32:06
You can use jquery for validations in html/php forms.Try to include jquery validations in your html code. 您可以使用jquery进行html / php形式的验证。尝试在HTML代码中包括jquery验证。 All you have to do is just include latest version of jquery and the validate.js from github 您所要做的只是包含最新版本的jquery和来自github的validate.js
and make the drop down list required as follows. 并按如下所示制作所需的下拉列表。
<select name="Browser" required="true">
And that will take care of the things. 这样就可以解决所有问题。 you can also explore about validate.js from this link 您还可以通过此链接探索有关validate.js的信息
* Update : * * 更新：*
Also you can use the html5 validations for modern browsers. 您也可以对现代浏览器使用html5验证。
<input type="text" name="username" required="required">
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