How to get form input value? [closed] - php

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I'm beginner for PHP. I have a form on the website and this form getting title and description values specific websites (with preg_match).
I want to add url input this form and when you add url and press submit button its auto get fields. Example
Frontend:
<input name="url">https://testdomain.com/posts/6412</input>
Backend:
$link = 'input values here';
Result:
Form fields (title and description getting) refresh or with ajax.

Answer 1

Create a Form and add the fields inside it..
In action, attribute add the file name where you want to post the form..
Form.php
<form method="POST" action="submit.php">
<input name="url" value="https://testdomain.com/posts/6412">
<input type="submit" name="submit" value="Submit">
</form>
submit.php
<?php
if(isset($_POST['submit'])){
$link = $_POST['url'];
}
?>
With AJAX
Form.php
<form method="POST" id="form" action="submit.php">
<div id="result"></div>
<input name="url" value="https://testdomain.com/posts/6412">
<input type="submit" name="submit" value="Submit">
</form>
<script>
$("#form").submit(function(e) {
e.preventDefault();
$.ajax({
type: "post",
url: $(this).attr("action"),
data: $(this).serialize(),
success: function(response) {
$("#result").html(response);
}
});
});
</script>
submit.php
<?php
$link = $_POST['url'];
echo $link;
?>
for ajax, you must have to add jquery library before ajax code

Answer 2

If you use jQuery, you can use its serialize() method to get all the form inputs.
$("#form").submit(function(e) {
e.preventDefault();
$.ajax({
type: "post",
url: $(this).attr("action"),
data: $(this).serialize(),
success: function(response) {
$("#result").html(response);
}
});
});
Note, however, that serialize() won't include the submit button itself. That's only submitted automatically in normal form submissions. If the server expects something like $_POST['submit'] to be set, you have to add it explicitly, e.g.
data: $(this).serialize() + '&submit=true',

Answer 3

Use this as your form, make sure to include method="post" in the form attribute section.
<form class="contact-form" method="post" action="processes/contactusform">
<div class="form-group">
<label for="name" class="sr-only">Name</label>
<input type="name" class="form-control" id="name" placeholder="Name" name="name" required />
</div>
<div class="form-group">
<label for="email" class="sr-only">Email</label>
<input type="email" class="form-control" id="email" placeholder="Email" name="email" required />
</div>
<div class="form-group">
<label for="message" class="sr-only">Message</label>
<textarea class="form-control" id="message" rows="7" placeholder="Message" name="message" required /></textarea>
</div>
<div class="form-group">
<input type="submit" id="btn-submit" class="btn btn-send-message btn-md" value="Send Message" name="submit">
</div>
</form>
In your php code, you can refer to your inputs using:
$name = $_POST['name']; //you use 'name' because the value attribute in html for that specific input is set to "name"
$email = $_POST['email'];
$message = $_POST['message'];
Your welcome