Use input value as an array variable - php

Question

I'm totally new to php. I'm trying to echo the value of an input field into a an array but it doesn't seem to work.e.g echo the value of hidden-input as the value for origin in the array. How can I achieve this?
<form method="post">
<!-- Set type -> Hidden, if you want to make that input field hidden.
You really should use better "names" for the input fields -->
// I populate the value with jQuery //
<input id="hidden-input" type="hidden" name="from" value="">
</form>
<?php
$params = array(
'origin' => $_post['from'],
'destination' => um_user('postal_zip_code'),
'sensor' => 'true',
'units' => 'imperial'
);
$params_string='';
// Join parameters into URL string
foreach($params as $var => $val){
$params_string .= '&' . $var . '=' . urlencode($val);
}
// Request URL
$url = "http://maps.googleapis.com/maps/api/directions/json?".ltrim($params_string, '&');
// Make our API request
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$return = curl_exec($curl);
curl_close($curl);
// Parse the JSON response
$directions = json_decode($return);
//echo"<pre>";
//print_r($directions);
// Show the total distance
echo '<p><strong>Total distance:</strong> ' . $directions->routes[0]->legs[0]->distance->text . '</p>';
?>
<div id class="distance"></div>
The jQuery that inserts the value looks like below and it works perfectly. It inserts it as supposed but the php doesn't pass it to the array
$(document).ready(function() {
var someName = $('.um-field-postal_zip_code .um-field-value').text();
$("input#hidden-input").attr("value", someName);
});

Answer 1

<form method="post">
<!-- Set type -> Hidden, if you want to make that input field hidden.
You really should use better "names" for the input fields -->
<input id="hidden-input" type="hidden" name="from" value="">
</form>
<?php
$params = array(
'origin' => $_POST['from'], // <- Now it should be empty, because nothing is inside
'destination' => um_user('postal_zip_code'),
'sensor' => 'true', // If you write 'false' it's still true, because the string is filled. Please use correct bools like true / false without the quotes // 'sensor' => true
'units' => 'imperial'
);
?>
You also need something to "send" or "activate" the form.
<input type="submit" name="sendForm" value="Send Form"/>
So the input form looks like:
<form method="post">
<!-- Set type -> Hidden, if you want to make that input field hidden.
You really should use better "names" for the input fields -->
<input id="hidden-input" type="hidden" name="from" value="">
<input type="submit" name="sendForm" value="Send Form"/>
</form>
Let me know, if you need more help!

Answer 2

html
<form method="post" action="yourpage.php">
<input id="hidden-input" name="from" value="">
<input type="submit" value="Submit" name="submit_button">
</form>
php
<?php
//if your form is submitted fill the array
if(isset($_POST['submit_button'])){
$params = array(
'origin' => $_POST['from'],
'destination' => 'postal_zip_code',
'sensor' => 'true',
'units' => 'imperial'
);
//print array
foreach($params as $index=>$value){
print $index." :".$value;
}
}
?>

Answer 3

You can not fetch data from form without refresh of page. Actually you are trying to fetch data from hidden input which is coming from jquery.
First remove form html and make ajax call
You need to set ajax
$(document).ready(function() {
var someName = $('.um-field-postal_zip_code .um-field-value').text();
if(!someName==''){//check somename is blank or not
//make ajax call
$.ajax({url: "url of your php code",
data : 'someName',
type : 'post',
success: function(result){
}});
}
});
In php file fetch data using $_post
echo $data = $_post['data'];//this is your origin
Now continue with your code
$params = array(
'origin' => $data,
'destination' => um_user('postal_zip_code'),
'sensor' => 'true',
'units' => 'imperial'
);
$params_string='';
// Join parameters into URL string
foreach($params as $var => $val){
$params_string .= '&' . $var . '=' . urlencode($val);
}
// Request URL
$url = "http://maps.googleapis.com/maps/api/directions/json?".ltrim($params_string, '&');
// Make our API request
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$return = curl_exec($curl);
curl_close($curl);
// Parse the JSON response
$directions = json_decode($return);
//echo"<pre>";
//print_r($directions);
// Show the total distance
echo '<p><strong>Total distance:</strong> ' . $directions->routes[0]->legs[0]->distance->text . '</p>';