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I've seen several posts about the issue but none of them solved my problem. I'm working with XAMPP and I have an htmlindex.html and a phpremote.php in the same folder.
TheformData which I want to send to the php is created using a form (basic_form) in javascript. It resulted to be well constructed, sinceconsole.log(...formData); printedArray [ "mode", "basic" ], Array [ "file", File ] as expected, which are the string and the input file.
But unfortunately in the php the commandprint_r($_POST); outputs onlyArray() and also the commandvar_dump($_POST); outputsarray(0){}. So it seems that the content of the form is not passed to the php.
Here it is the html form:
<body>
<div>
<form name="basic_form" enctype="multipart/form-data" action="remote.php" method="post">
<input type="text" id="mode" name="mode" value="basic"/>
<input type="file" id="file" name="file"/>
<input type="submit" id="submit_basic_input" name="submit_basic_input" value="Submit"/>
</form>
</div>
</body>
Here the javascript to submit the form:
<script>
var basic_form = document.forms["basic_form"];
basic_form.addEventListener('submit', e => {
e.preventDefault();
const url = 'remote.php';
const formData = new FormData(basic_form);
fetch(url, {
method: 'POST',
body: formData
}).then(response => {
console.log(response);
if(response["status"] == 200)
location.replace(response["url"]);
});
});
</script>
Here the php to print the content of form:
<?php
var_dump($_POST);
$datapost = $_POST;
print_r($datapost);
print($datapost["mode"]);
?>
First, you callfetch which makes a POST request
When you get a response, you log the response object (which doesn't hold anything all that useful, in particular the body of the response will show up as a readable stream and not a string).
That response does showarray(1) { ["mode"]=> string(5) "basic" } Array ( [mode] => basic ) basic though, you can see it using the Network tab of the browser's developer tools.
After logging the response you setlocation.replace(response["url"]); which makes a GET request (to the same URL) and navigates the browser to it.
The GET request is a different request and does not have the request body from the POST request from it.
Since it is a different request, it gets a different response and now$_POST is an empty array.
If you want to navigate to the response then get rid of the JavaScript. Just make the POST request with the form and let the browser render the resulting page.
If you want to use Ajax to make the request then:
response.text() to get the data out of the response body and then perhaps usingcreateElement,appendChild and friends to add the data to the current document)Our community is visited by hundreds of web development professionals every day. Ask your question and get a quick answer for free.
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/
JavaScript is a multi-paradigm language that supports event-driven, functional, and mandatory (including object-oriented and prototype-based) programming types. Originally JavaScript was only used on the client side. JavaScript is now still used as a server-side programming language. To summarize, we can say that JavaScript is the language of the Internet.
https://www.javascript.com/
HTML (English "hyper text markup language" - hypertext markup language) is a special markup language that is used to create sites on the Internet.
Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/
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