For example I have this line of html within form tags.
<form action="getData.php" method="post">
<div id="imadiv" value="2"></div>
</form>
How would I retrieve the value of the 'value' attribute so that I can use fwrite() to put it on a document using PHP?
Are you parsing html files that have this structure and need to access the value in order to create another document?
If not, then your form handler will have access to the value of "imadiv" (in this example) when you make your post.
if you were do do something like this
<form action="getData.php" method="post">
<input name="inputname" value="2"/>
</form>
and submit that form getData.php could do something like
$valueofinput = $_POST['inputname']
Giving your input tags a name attribute it important to reading the values out of the post payload.
If you're parsing HTML files with forms then I would suggest looking at XML/HTML parsing libraries that will help you access the html as a object node structure.
If you are doing something a little more complex where you want to validate the the data as the use enters, then you'll need to implement an ajax solution. However, keep in mind that connecting the post to key events can get messy as you could end up sending more requests than you originally wanted to if not implemented correctly.
Related
I have the following form in a file called "foobar.html":
<!-- other stuff -->
<form method="post" action="foo.php?cat=1">
<input type="text" name="bar" />
<input type="submit" value="foobar" name="foobar" />
</form>
<!-- other stuff -->
And I open this file in a php script with fopen, how do I fill out and submit this form without any input from the user? Thanks
Parse out the action attribute with a HTML parser, and use curl to perform a POST to the appropriate target URL.
Read the entire fire into a variable. Rather than using fopen you might want to consider file_get_contents for that, it's a bit cleaner.
You'll then want to parse that string as HTML. You could use PHP's DOMDocument for that. Get the action and method of the form by traversing the DOM tree to the form tag and reading out those attributes. Next get the names of any inputs within the form tags. Use those names to generate a query string with your key=value pairs. If the method of the form is GET, then append that query string to the form action, otherwise save it in another variable.
Finally, use CURL to "submit" the form. That is, use the form action as the URL for a CURL request. If the form method was GET, you should have already appended the data to the URL, if the method was POST, you'll want to set the data for the CURL request to the data query string you generated from the form names.
If your question extend to how to know what data to fill into what form fields, that is pretty much impossible to solve. Certainly there are some input names you could look for and guess the required data but a universal solution is an impossible problem to solve.
Are you trying to have the user submit the form on their browser, without user interaction? If that's the case, you'll need to resort to javascript, something like:
<body onLoad="document.getElementById('autoSubmit').submit();">
<form id="autoSubmit">
(insert form here)
</form>
</body>
This will automatically submit the form. Some notes: not everyone has JavaScript enabled, so you might want to change the inputs to type="hidden", as well as add a nice big submit button that says Click Here.
I'm newbie in PHP.I want to know that,I taking data by html form and a .php file.
like:
<form id="form1" name="form1" method="post" action="show.php">
<strong>Please Enter the Unique id</strong><br/><br/>
Unique id:
<!-- name of this text field is "tel" -->
<input name="id" type="text" id="id" />
<p>
<input type="submit" name="Submit" value="Submit" />
</p>
</form>
</html>
Then,I used show.php file to get the 'id'.like:
$id=$_POST['id'];
Is there any way to take input by php code???
Update:
In "C" we take ant input by this way
scanf("%d",a);
is there any way to do so in PHP.I think now all you may be clear what I'm trying to say??
Thanks
Yasir Adnan.
What you are you trying to get is wrong!
HTML:- It is the communicator between the user and the browser. It displays the contents according to the user input or html code.It gets data from user or from html code.
Php :- It is the communicator between server and the browser. It has the capability of collecting from some where else other than the code like mysql data base and then uses html to display the content!
Here you are asking php to do html work which is not correct!!
the html
<input name="sb_id" type="text" id="sb_id" />
php
$id=$_POST['sb_id'];
Well, you do take the input by your php code. Your variable $id took the value of $_POST['id'] which contains the input of the textfield.
After this step you can work with the variable like any other
$id = $_POST["sb_id"]; ?
Remember that $_POST["field_name"] where field_name must be match the name attribute of your <input /> tag.
the id attribute of input tag is not sent to server inside the $_POST array. It`s typically used in client-side.
You can get data in your PHP code through GET and POST parameters. Those parameters are part of the HTTP request.
The GET parameters are in the url :
http://mywebsite.com/id=3&name=test
Then you get them using:
$id = $_GET['id'];
$name = $_GET['name'];
So you can get input data through this way when people visit the URL, call it in AJAX, or call the URL in another application (like a webservice). But no matter how it's called, it's the same for you on the PHP side.
The POST parameters are in the HTTP request, you can't pass them through the URL. You can do that by using an HTML form, or by creating the HTTP request yourself. If you are using Javascript to call your PHP code (and pass data to it), you can use AJAX to do that for example. You, in your PHP code, can get the variables this way:
$id = $_POST['id'];
$name = $_POST['name'];
If you want console-style I/O, you should probably check JavaScript/AJAX. The second one will allow you to write your own wrapper that will help you to process the input by your server "on air".
The problem is, you still need to use $_POST for AJAX. And, which is more important, it's easier (and cheaper for the server) to validate and process input by JS (and to validate and process it further on the server-side after submit).
And if the question is "how can I get the variable from the needed format?", the answer is: try using regexps/parsing the string.
Oh, btw: there IS scanf() in php, and it's called 'sscanf' ('fscanf' for files).
I have a structure like :
<form id="first_form">
<fieldset>something</fieldset>
<fieldset>
<iframe><html> ...
<form id="second_form">
<input type="hidden" value="**some_value**" name="hidden_data" />
</form>
</html></iframe>
</fieldset>
</form>
What i need from this structure is to take the value from "hidden_data" in main form, and then to go post in database. I tried to prin_t($_POST); die; (after submitting first form) but i don't receive any input from second_form. Does somebody have an idea? Regards
Note : It's about wordpress plugin tdo mini forms
Note 2 : I want to get an url from an uploaded file (url which i get after i submit second_form) and then add as post meta, using first_form.
You can't just dump HTML inside of an iframe element. Any children of iframe are simply there to be displayed if the browser can't handle iframes.
Also, nested form elements doesn't validate (in HTML 4.01 Strict anyway, and I doubt in any others).
Why are you using an iframe with a form in it? Seems strange. And having HTML inside of that isn't what it is <iframe> tag is used for. Would be best to just have 1 form id="first_form" with the hidden element from the form id="second_form" in it. You can't put a form inside of another form, there can only be one at any given time.
I have a index.html where I would like to submit some coordinates that can be passed upon to separate PHP file; where it could perform a query. I am new to this.
HTML:
Xmax<input type="text" name="Xmax" size="15">
Ymax<input type="text" name="Ymax" size="15">
<input type=SUBMIT name="submit" VALUE="Submit">
PHP query:
$query = "SELECT * FROM state WHERE LONG_HI<$_POST["Ymax"] AND LAT_HI<$_POST["Xmax"];
$result = mysql_query($query);
So is there a way to perform remote action from this HTML file to the specified PHP file?
Well, Forms can do the job. Is'nt it?
Yes
Either make an HTML form to accept the Xmax and Ymax parameters, and set the form action to the PHP file;
Or use AJAX to pass the data in the background and receive a response.
If both of these concepts are foreign to you, and you don't know JavaScript, get comfortable with the first option first.
Would you please describe in detail what you are about to do?
do you have a html form?
What kind of request do you do, clicking a link, sending the form?
The query does not contain any of the variables...
could you please post excerpts of the code? single lines are useless in most cases.
Regards,
Mario
use action attribute in FORM element to specify where the request will be sent to.
<form action="another.php" method="POST">
Xmax<input type="text" name="Xmax" size="15">
Ymax<input type="text" name="Ymax" size="15">
<input type=SUBMIT name="submit" VALUE="Submit">
</form>
You just add few line with your code because to transfer any variable value from one form to another page we have to use 'form' method. So, we have to add form tag with your code. Transferring of data from one page to another page (any type of page like php, jsp, aspx etc) is done by two methods mainly - one of them is Post and another one is Get.
Difference between both the method is quite simple. In Post method, data from one page to another page travels in hidden form whereas Get is basically used to transfer value by displaying it at url. Post method example: user-name and password, and Get Method: any query fired at Search Engine.
<form name="form" action="filename.php" method="POST" >
//Your Code
</form>
$('#images_upload_add').click(function(){
$('.images_upload:last').after($('.images_upload:last').clone().find('input[type=file]').val('').end());
});
using this code to append file input's does not upload the file in firefox.
also
$('#image_server_add input[type=button]').click(function(){
var select = $(this).siblings('select').find(':selected');
if(select.val()){
$('#image_server_add').before('<tr class="images_selection"><td><input type="button" value="Delete"></td><td class="main">'+select.html()+'<input type="hidden" value="'+select.html()+'" name="images_server[]"/></td></tr>');
}
})
also does not upload the values to the $_POST
I can't find anything to say why this wouldn't work in the documentation, this works in IE but not it Firefox/WebKit
Why wouldn't these examples correctly upload the form values?
Bottom line the markup on the page was mangled.
The form was in a table based layout, not by my choice, and the form declaration was inside a tr.
I moved the form declaration to a parent td of the form inputs and now it works.
This is an interesting result considering the rendering engine will correctly submit inputs that are improperly placed, but attempting to add those inputs using jQuery/javascript? into the same place will not work in Firefox/WebKit.
I imagine this has to do with the dom manipulation that javascript does and how it may be more strict about the block level element requirements.
Any more notes/conjectures about my findings would be appreciated.
Are you having the same problem if you create a new input rather than cloning an existing one?
Are you changing the name of the cloned input to avoid name collisions or are you using an array style name (e.g. file[])?
What is the purpose of adding the markup of the selected option to a hidden input?
For fun, have you tried using .clone(true)?
Wow! Sometimes jQuery can actually be too dense to read. Would also help if we could see your markup.
Stab in the dark here because I'm guessing at what you're trying to do.
You can't programmatically enter a filename into a file field and it be uploaded to the server. That would be dangerous.
Perhaps I'm barking up the wrong tree?
Maybe rather than adding the element just as the form is submitted, put the element in, but with default values.
Then when the button is clicked, populate that element with the right value.
I just say that because by the time you click on the submit, it might be too late for the added element to be submitted along with the form.
I got to this section from google searching a similar problem.
To me, I was able to fix it by taking a step back at the problem -
in a example form:
<table>
<form method="post">
<tr>some content <input type="text" name="test"> </tr>
</form>
</table>
This will work in Internet explorer for some reason, but it is actually invalid html.
Move the form tags to outside the table, like so:
<form method="post">
<table>
<tr>some content <input type="text" name="test"> </tr>
</table>
</form>
And it will then work.
The input's will work fine (even dynamicly) this way, I was having a lot of trouble where a form would work, until you inserted more inputs or form elements - only the original elements would submit, which was very hard to track.