I am facing a problem related to auto fill in form.
Actually i am running a trust charity website which collects fund from donor.
Problem :
When i have entered a donation for one cause and again i want to enter donation for the same cause but with different credit card detail.
then i am strange the form where i need to enter detail card related is retained all of the information from the previous donation so everything was entered.
I have tried autocomplete="off" in form and also in input.
rename the input for each pageload. generate a prefix, and put it in a hidden field in the form.
$prefix = date("U"); //lets use unix time for this.
...
<input type="hidden" name="prefix" value="<?php echo $prefix; ?>"/>
<input type="text" name="<?php echo $prefix; ?>_cardnumber" />
...
And when processing look for
$_POST[$_POST['prefix'].'_cardnumber']
Try adding a unique identifier to the beginning or end of the id's or names of the form elements.
Alternatively there is this:
autocomplete = ”off” is not valid markup with XHTML Transitional,
which is a common DOCTYPE.Use this to keep a valid markup
from
if (document.getElementsByTagName) {
var inputElements = document.getElementsByTagName(“input”);
for (i = 0; inputElements[i]; i++) {
if (inputElements[i].className && (inputElements[i].className.indexOf(“disableAutoComplete”) != -1)) {
inputElements[i].setAttribute(“autocomplete”, ”off”);
}
}
}
From http://css-tricks.com/snippets/html/autocomplete-off/
If this is Google Chrome then it actually has a feature which ignores autocomplete settings from the current web form and will actually pull data from it's own "personal program cache" and populate the fields for you as a convenience. It also does this when it recognizes address fields. Thomas Martin Klein's answer will probably work best but I have not tested it before so Chrome may be smart enough to recognize your algorithm anyways. Good luck!
Related
Overview of what my question is:
I have an array that is populated via XML inputs, and from this I am the using it to populate a web form with form controls. From here I want to be able to select the exact form that is clicked, but to do that I need to give the controls some form of unique identifier, which is an issue...
As the site is of a betting nature and I am currently working with horse racing, each horse is given a unique identifier by default, I have tried to add this identifier to the forms.
e.g:
<?php
//Values from feed examples: 123, 234, 345
$valuesFromFeed = array(123, 234, 345); //These are not in my code, they are values from the XML feed
while ($uniqueIdentifier = $valueFromFeed) {
<form name="horse_<?php echo $uniqueIdentifier; ?>_frm" action="#">
<input type="hidden" name="horse_<?php echo $uniqueIdentifier; ?>" />
<input type="button" value="Place bet" />
</form>
}
?>
But then the problem comes when I try to reference this name of "horse_123", I need to know exactly what the value of that name is, which is impossible as there are millions of horses, tracks and races.
Example of trying to get post:
<?php
if (isset($_POST['horse_' . $uniqueIdetifier])) {
echo "You got the right thing here.";
} else {
echo "Still no joy.";
}
?>
The issue with the code above, is that once the $uniqueIdentifier has been used in the while above, it is removed and is no longer usable in this scope.
So to conclude, my point and question:
How do I get the correct name from the form in a submit for the specific horse that I wish to reference and get information on?
How do I use this information as I need to?
Better Description:
I have been given an XML feed and site as part of a handover, this feed contains many hundreds of races and horses.
When this information is loaded into the page, it is also stored in a database on the server, as well as sending it through some different loops (which are messy, but someone else's code I'm trying to clean up!) which split it down and then make up a dynamic menu containing all the races, horses, odds and information. (All information on a single horse within a race is kept in one form)
Next to the information stated in the prior paragraph, is 2 buttons, one that allows the user to take odds and another that allows users to take starting price.
On either of these button clicks, I need the information attached to said horse, and then populate a betting slip. In the form (mentioned above) the name is "horse_<?php echo $uniqueIdentifier; ?>_frm".
The problem that occurs to me is, yes data is stored on the server when it is loaded, that I cannot seem to get the right form via the unique identifier that is put into the form name
Edits
Added form surrounding my input as this is there, I just missed it in original question
Added the button that transmits data to where I need it
Added a better description of my problem
You can use multiple forms, one for each horse. Each form has a different action, where the URL includes the id of the horse. For example:
<form action="/horses/my_unique_horse_name">
...
</form>
<form action="/horses/another_horse_name">
...
</form>
Or you could have multiple forms all with the same action, with a hidden field for the name of the horse:
<form action="/horses/">
<input type="hidden" value="my_unique_horse_name">
</form>
<form action="/horses/">
<input type="hidden" value="another_horse_name">
</form>
Alternatively, you could have a button for each horse:
<form method="/horses/">
<button type="submit" value="my_unique_horse_name">My Horse</button>
<button type="submit" value="another_horse_name">Another Horse</button>
</form>
Beyond that, I don't entirely understand the problem. What kind of data are you submitting and retrieving?
I'm using simple honeypot
my HTML
<input type="text" name="mail" id="mail">
my CSS
#mail{display:none;}
my PHP
if(isset($_POST["mail"])){
$honeycomb_passed = "No";
} else {
$honeycomb_passed = "Yes";
}
When I submit the form always outputs No. To my understanding it should output yes, right? Where is the problem?
Thanks
Just because the field is hidden in CSS doesn't mean it isn't send to the server.
If you don't want the email value to be sent to the server - try to user something like:
$('input[name=email]').remove();
to remove the element from the dom
be sure to wrap in:
$().ready(function(){});
If you're not using jQuery let me know!
You're doing it wrong.
A working honeypot
HTML
<form>
<input type="text" name="mail" id="mail">
<input type="submit">
</form>
<style>
#mail{display:none;}
</style>
PHP
if($_POST && $_POST["mail"] != ""){
die("Sorry, no robots");
}
How does it work
You have a hidden field inside your form. Typically, a robot will attempt to fill any form field available with data in the hope that it will not get rejected. Once it submits that form, your script will detect the input and die. If a human was filling it out, they would not see the hidden input (type=text style=display:none) and leave it empty. Thus the php would allow the submit to go ahead.
If you PHP script dies as soon as it detects the honeypot field, then you are saving yourself cpu cycles (because there is no need to reply reasonably to a robot).
For more information on honeypot, see this question:
How do I add Honey pot fields to my forms?
I have a page that contains a form. This page also has a PHP script to set some variables.
These variables are then submitted as hidden values when the user clicks submit.
I have a requirement to take a users entered value (amount) and then set that as a variable inside the PHP , then post the form. Is this possible ?
I cannot just sent the form submitted value as it must go through a MD5 hash first in the PHP script. This is a requirment for Realex creditcard payments.
I was thinking this might be possible with JavaScript?
EDIT
Just to clarify , the page has PHP (simplified here for example)
<?php
$amount ="";
$tmp = "$timestamp.$merchantid.$orderid.$amount.$curr";
$md5hash = md5($tmp);
$tmp = "$md5hash.$secret";
$md5hash = md5($tmp);
?>
All of the above variables are pre-defined and dont change, however the amount is dependant on what the customer enters.
The form is on the same page as the above , so when the customer enters a value , then hit submit ... this along with the md5 hash above is sent.
<form>
<input type="text" name="donate_amount" value="">
<input type="hidden" name="AMOUNT" value="<?=$amount?>
</form>
but Im not sure how to do this dynamically before posting.
I'm not sure if I'm getting this correctly without seeing code, but from what I got from it what I think you want to to is save whatever it is to a session.
so if its coming from input
$_SESSION['derp'] = Hash::howeveryouhash($_POST['derp'])
or if hash happens after input is gotten just save the hashed input to a session?
I'm not sure if this what you meant, but if it is, be sure sure to reference the php manual to insure proper use of $_SESSION!
You need to know the final amount before you create the hidden form Gary. There's no point creating the hash without it.
You should ask the user for the amount they wish to donate on the previous page. Then you can present a final "Donation Overview" page containing the hidden form, and the "Proceed to Payment" button.
Whatever you end up implementing, don't put the Realex shared secret in the javascript on the page! This must be kept secured on the server side.
How about doing this:
<input type="text" name="amount" onchange="ajaxFunction(this)" value="" />
Then when the input field changes the function ajaxFunction calls a PHP script sending the value. In the PHP script you can store the value in $_SESSION['amount'] for later use.
function ajaxFunction(obj) {
$.post("store_amount.php", { amount: $(obj).val() } );
}
Requires jQuery.
I have a HTML form in list.php that submits the data from text box ("item" in below code) to check.php. This check.php validates the text entered to be not empty or white spaces only. After validation, it redirects to list.php for the entered text to be displayed. list.php is below. I want the "add" button to be enabled only when valid text is entered in the text box. I would like this feature to be done with php and probably not with javascript.
I can use "disabled=\"disabled\" in the form, but this does not work in real-time disabling depending on validation.
<form action="check.php" method="post">
<input name="item" type="text" size="25" autofocus="autofocus" />
<input type="submit" value="Add" id="add" />
</form>
You say:
I would like this feature to be done with php and probably not with javascript.
Unfortunately, if you want "real-time" then you're gonna need JavaScript. You'll need it to make AJAX calls to your PHP code to check for validation.
So either A) you don't validate in "real-time" at all, or B) You use JavaScript in one shape or another.
Let's say you opt for B), to use JavaScript, and presuming ALL you need to do is check for an empty string or whitespace, then you can do all of this client-side in JavaScript and not require a server call at all, also making it truly "real-time".
And so, here is my solution, using JavaScript (jQuery) without relying on server calls. This may not be suitable for your current implementation, but just in case it is, this might be helpful.
JSFiddle:
http://jsfiddle.net/VKfrw/1/
JavaScript:
function hasWhiteSpaceOrEmpty(s)
{
return s == "" || s.indexOf(' ') >= 0;
}
function validateInput()
{
var inputVal = $("#myInput").val();
if(hasWhiteSpaceOrEmpty(inputVal))
{
//This has whitespace or is empty, disable the button
$("#add").attr("disabled", "disabled");
}
else
{
//not empty or whitespace
$("#add").removeAttr("disabled");
}
}
$(document).ready(function() {
$("#myInput").keyup(validateInput);
});
HTML:
<!-- give this guy an ID -->
<input id="myInput" name="item" type="text" size="25" autofocus="autofocus" />
This implementation uses jQuery.
As mentioned, if you want this done in real time some javascript will be needed.
However I think this problem is actually more suited to javascript in general. PHP validation can be useful if you need to cross reference for data with data in your database.
eg. In a sign up form, checking a user is not already registered with the entered email address.
But in your case, depending on what you mean by "valid text" it is probably easier and better to use javascript.
There are some great jQuery plugins which make javascript validation really simple.
http://docs.jquery.com/Plugins/Validation/validate
I've written a simple entry form that compiles information onto a database, and I'm having trouble with my required fields...
I use a form to process the data via post method if the user neglects to fill in a required field I would like to bring him back to the original form with his/her previous fields entered.
How to I pass info back into an input label? Is there an easy way to do this without any crazy scripts? I started with sessions but I realized I have no clue how to put the stored info from the session back into the input field so the user doesnt have to retype all of their info... Also would a cookie be better for this over session?
Thanks guys,
Arthur
When you post a form, all those variables are submitted into a global array named $_POST['input_name'] and available on the page posted to. A lot of times what I like to do if I'm doing it fairly quickly, is just make the value of those input fields equal the same as what would be posting.
For example lets say we have a desired username field but the form didn't validate for some reason and posted back to itself; we don't want them to have to enter it again:
<input type="text" name="username" value="<?php print $_POST['username']; ?>" />
Of course when they first load the page, the value will be empty so there is nothing there, but if for some reason it posts back, that "username" field will already contain entered information.
Even better is java script validation, as the form doesn't have to post back, but this will do the job just fine!
Since the user posts all your data to you, these values are also available in your scripts. So you can use them very easily in the case of text-fields, but a bit more work is required for select options, checkboxes and radio buttons:
<input id="myid" name="myid" type="text"
<?php echo !empty($_POST['myid'] ? "value=\"{$_POST['myid']}\"" ?> />
For radio buttons, select options and checkboxes you instead have to check the value to see if it corresponds with the entry you are currently outputting and print selected="selected".
When it comes to validation you can also have a JavaScript validation to give feedback sooner to the user about possible failures. Just remember to have the same validation on the server side in case someone doesn't have JavaScript enabled or submits it using JavaScript, thus bypassing your client side validation.
Not sure if this is the best way, but you could redirect to a "reload" page and use the values from POST or GET to reinput the existing fields. So first validate, the fields that are required and if any are missing, redirect to this page. Then the POST or GET will have all of the values the user filled in (and the missing required fields will already be blank) so you just loop through and load up the supplied info. Additionally, if they supplied incorrect info you could manually clear it and this will also allow you to mark the missing required fields.
Another option is put your validation in JS so you know the data is good before you submit. However, I'm not sure if there are security concerns with that or not.
I check to see if the post value has been set otherwise you can show a default value, then use a bit of jQuery to remove it when the input has focus
<input type="text" name="first_name" id="first_name" value="<?php if(isset($_POST['myid'])) { echo $_POST['myid'] } else { echo "Your Name" ?>"></input>
Here's the jQuery which will remove the default Your Name when the textbox has focus.
$(document).ready(
function(){
$.fn.clearDefault = function() {
return this.focus(function() {
if( this.value == this.defaultValue ) {
this.value = "";
}
}).blur(function() {
if( !this.value.length ) {
this.value = this.defaultValue;
}
});
};
// clear default textbox entries
$("#first_name"). clearDefault();
}
);
jQuery Validation Plug-in
<input type="text" name="username" value="<?php isset($_POST['username']) ? echo $_POST['username'] : null; ?>" />
will work fine