I currently built a simple form to GET request someones zipcode.
<form action="http://example.com" method="get" target="_blank">
<p>ZIPCODE</p>
<input type="text" name="zip">
<input type="submit" value="Submit">
</form>
When submitted it will be http://example.com/?zip=ZIPCODE
What I am looking to do it add an additional piece so it will be http://example.com/?zip=234&country=usa
I tried adding a hidden field <input type="hidden" name="country=usa"></input> but this replaces = with %3D and adds = after it like so: http://example.com/?zip=ZIPCODE&country%3Dusa=
How can I easily append the URL with country=usa?
Try:
<form action="http://example.com" method="get" target="_blank">
<p>ZIPCODE</p>
<input type="text" name="zip">
<input type="hidden" name="country" value="usa">
<input type="submit" value="Submit">
</form>
I have two submit buttons in one form and when I used the first submit, all the text input fields become blank. I try to solve this by using a session to store the textfield inputs.However, I don't know how I can put back the value to the input field that I stored in the session after the first submit is used.
The HTML code:
<form method="post" enctype="multipart/form-data">
<input type="text" name="headline" id="headline" required />
<input type="file" name="files[]" multiple>
<input type="submit" value="Upload Images" name="submit_image">
<input type="submit" name="submit_post" value="Submit Your Post"/>
</form>
The php code:
<?php
session_start();
if (isset($_POST["submit_image"])) {
if (!empty($_POST['headline'])) {
$_SESSION["headline_session"] = $_POST ["headline"];
}
}
$headline_session = $_SESSION["headline_session"];
?>
Why you want to use a session!
you can echo the value of $post parameter in a property called (value) like this
<form method="post" enctype="multipart/form-data">
<input type="text" name="headline" id="headline" value="<?php echo $_POST ['headline']; ?>" required />
<input type="file" name="files[]" multiple>
<input type="submit" value="Upload Images" name="submit_image">
<input type="submit" name="submit_post" value="Submit Your Post"/>
</form>
You can still save things to session if you need them later but I recommend just echoing out the previous value.
<form method="post" enctype="multipart/form-data">
<input type="text" name="headline" id="headline" value="<?php echo $_POST['headline']; ?>" required />
<input type="file" name="files[]" multiple>
<input type="submit" value="Upload Images" name="submit_image">
<input type="submit" name="submit_post" value="Submit Your Post"/>
</form>
Should you need to compare the previous submissions with what was already submitted then this is one way to do it.
Good work thinking forward :) happy coding
I have the following form that is dynamically generated:
<form action="index.php?route=module/print_wizard/showPrintSheet&token=4ef5f4af6ba25d6096357fdb4809e819" method="post" enctype="multipart/form-data" id="form">
<input name="[print][6][1]" type="hidden" value="on">
<input name="[print][6][3]" type="hidden" value="on">
<input name="[info]" type="hidden" value="INV-GIS-00002-3">
<input name="[layout_override][6][1]" type="hidden" value="">
<input name="[layout_override][6][3]" type="hidden" value="">
<input name="[bundle_override][6][1]" type="hidden" value="">
<input name="[bundle_override][6][3]" type="hidden" value="">
<input name="[run_id]" type="hidden" value="14040455">
<button type="submit">Export</button>
</form>
My PHP code is:
var_dump($_POST);
echo "<HR>".$this->request->server['REQUEST_METHOD'];
I have done this a million times before and can not for the life of me figure out why my $_post array is empty. I have changed my post to a get and all the fields and values are passing, but I need to use a post. Do I need to have one visible form element? Please help!
You are not using valid names for your form fields:
<input name="[print][6][1]" type="hidden" value="on">
is not valid as it just has an array index but no name.
If you change it to for example:
<input name="print[6][1]" type="hidden" value="on">
it will work without any problems.
I am trying to POST to a page that has two forms with duplicate name elements. The problem is that one form gets the password value and the other form gets the login value. (I can see this by printing out curl_exec($ch);) I will include my code for the target URL and the formdata. How do I fix this?
// my target url and form data
$target = "http://www.example.com/login";
$formdata = "id=$login&password=$password&Submit=Log In";
Forms:
<form id="login" name="login" method="post" action="login">
<label for="id">LOGIN ID</label> <input type="text" value="" name="id" maxlength="50" size="30"><br>
<label for="password">Password ID</label> <input type="password" name="password" maxlength="12" size="30">
<div align="center"><button class="siteSprite signInSm" value="Log In" name="Submit" type="submit"></button></div>
</form>
<form section="login" id="loginform" name="loginform" action="http://www.example.com/login" method="post">
<input type="text" size="20" value=" Log-in" onfocus="this.value=''" name="id"></td>
<input type="password" value="Password" maxlength="15" size="12" onfocus="this.value=''" name="password">
<input type="submit" class="siteSprite signInSm" value="Sign-In">
</form>
You'll have to do something to indicate which of the two forms got submitted. You can either submit a field with the same name but different values in each one, or use the submit button:
<form ...>
<input type="hidden" name="whichform" value="1" />
<input type="submit" name="Submit" value="form 1" />
</form>
<form ...>
<input type="hidden" name="whichform" value="2" />
<input type="submit" name="Submit" value="form 2" />
</form>
and then
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (($_POST['Submit'] == 'form 1') || ($_POST['whichform'] == '1')) {
.... handle form #1 ....
}
if (($_POST['Submit'] == 'form 2') || ($_POST['whichform'] == '2')) {
.... handle form #1 ....
}
using either method works the same, just pick the one that makes most sense/is easiest and go from there.
$formdata = "id=$login&password=$password&Submit=Sign-In"; might do the trick; note the fact that the second form has a submit button with a value, and the first form has a <button> which won't send a value (or, maybe, sends a different value via script or something)
I just noticed that the submit button doesn't have a name; try passing it with NO submit parameter, i.e.:
$formdata = "id=$login&password=$password
I'm trying to create a BMI calculator. This should allow people to use either metric or imperial measurements.
I realise that I could use hidden tags to solve my problem, but this has bugged me before so I thought I'd ask: I can use $_POST['variableName'] to find the submitted variableName field-value; but...I don't know, or see, how to verify which form was used to submit the variables.
My code's below (though I'm not sure it's strictly relevant to the question):
<?php
$bmiSubmitted = $_POST['bmiSubmitted'];
if (isset($bmiSubmitted)) {
$height = $_POST['height'];
$weight = $_POST['weight'];
$bmi = floor($weight/($height*$height));
?>
<ul id="bmi">
<li>Weight (in kilograms) is: <span><?php echo "$weight"; ?></span></li>
<li>Height (in metres) is: <span><?php echo "$height"; ?></span></li>
<li>Body mass index (BMI) is: <span><?php echo "$bmi"; ?></span></li>
</ul>
<?php
}
else {
?>
<div id="formSelector">
<ul>
<li>Metric</li>
<li>Imperial</li>
</ul>
<form name="met" id="metric" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="form/multipart">
<fieldset>
<label for="weight">Weight (<abbr title="Kilograms">kg</abbr>):</label>
<input type="text" name="weight" id="weight" />
<label for="height">Height (<abbr title="metres">m</abbr>):</label>
<input type="text" name="height" id="height" />
<input type="hidden" name="bmiSubmitted" id="bmiSubmitted" value="1" />
</fieldset>
<fieldset>
<input type="reset" id="reset" value="Clear" />
<input type="submit" id="submit" value="Submit" />
</fieldset>
</form>
<form name="imp" id="imperial" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="form/multipart">
<fieldset>
<label for="weight">Weight (<abbr title="Pounds">lbs</abbr>):</label>
<input type="text" name="weight" id="weight" />
<label for="height">Height (Inches):</label>
<input type="text" name="height" id="height" /
<input type="hidden" name="bmiSubmitted" id="bmiSubmitted" value="1" />
</fieldset>
<fieldset>
<input type="reset" id="reset" value="Clear" />
<input type="submit" id="submit" value="Submit" />
</fieldset>
</form>
<?php
}
?>
I verified that it worked (though without validation at the moment -I didn't want to crowd my question too much) with metric; I've added the form but not the processing for the imperial yet.
To identify the submitted form, you can use:
A hidden input field.
The name or value of the submit button.
The name of the form is not sent to the server as part of the POST data.
You can use code as follows:
<form name="myform" method="post" action="" enctype="multipart/form-data">
<input type="hidden" name="frmname" value=""/>
</form>
You can do it like this:
<input type="text" name="myform[login]">
<input type="password" name="myform[password]">
Check the posted values
if (isset($_POST['myform'])) {
$values = $_POST['myform'];
// $login = $values['login'];
// ...
}
The form name is not submitted. You should just add a hidden field to each form and call it a day.
In the form submitting button (id method of form is post):
<input type="submit" value="save" name="commentData">
In the PHP file:
if (isset($_POST['commentData'])){
// Code
}
For some reason, the name of the submit button is not passed to the superglobal $_POST when submitted with Ajax/jQuery.
Use a unique value on the submit button for each form like so
File index.html
<form method="post" action="bat/email.php">
<input type="text" name="firstName" placeholder="First name" required>
<input type="text" name="lastName" placeholder="Last name" required>
<button name="submit" type="submit" value="contact">Send Message</button>
</form>
<form method="post" action="bat/email.php">
<input type="text" name="firstName" placeholder="First name" required>
<input type="text" name="lastName" placeholder="Last name" required>
<button name="submit" type="submit" value="support">Send Message</button>
</form>
File email.php
<?php
if (isset($_POST["submit"])) {
switch ($_POST["submit"]) {
case "contact":
break;
case "support":
break;
default:
break;
}
}
?>
As petervandijck.com pointed out, this code may be susceptible to XSS attacks if you have it behind some kind of log-in system or have it embedded in other code.
To prevent an XSS attack, where you have written:
<?php echo "$weight"; ?>
You should write instead:
<?php echo htmlentities($weight); ?>
Which could even be better written as:
<?=htmlentities($weight); ?>
You can use GET in the form's action parameter, which I use whenever I make a login/register combined page.
For example: action="loginregister.php?whichform=loginform"
I had a similar problem which brought me to this question. I reviewed all the preceding answers, but ultimately I ending up figuring out my own solution:
<form name="ctc_form" id="ctc_form" action='' method='get'>
<input type="hidden" name="form_nm" id="form_nm">
<button type="submit" name="submit" id="submit" onclick="document.getElementById('form_nm').value=this.closest('form').name;">Submit</button>
</form>
It seamlessly and efficiently accomplishes the following:
Passes the form name attribute via a hidden input field, without using the fallible value attribute of the submit button.
Works with both GET and POST methods.
Requires no additional, independent JavaScript.
You could just give a name to the submit button and do what needs to be done based on that. I have several forms on a page and do just that. Pass the button name and then if button name = button name do something.
Only the names of the form fields are submitted, but the name of the form itself is not. But you can set a hidden field with the name in it.