php - How to return the result of a function in the same page using jQuery? -

this simple don't seem able make happen in codeigniter.

using simple php should be:

<form id="volume" method="post" action="<?php echo $php_self;?>"> <label>length(cm):</label> <input type="text" name="length"> <label>width(cm):</label> <input type="text" name="width"> <label>height(cm):</label> <input type="text" name="height"> <button type="submit">submit</button> </form>   <?php  $length = $_post["length"]; $width = $_post["width"]; $height = $_post["height"]; $variable = 5000;  $sum_total = ($length * $width * $height) / $variable;  printf ("%01.2f" , $sum_total);  ?> kg 

i put form in view, php in controller want return result in same page instead of redirecting me.

thank in advance responses.

put jquery similar on page submit button.

$(document).ready(function(){   $('#volume').submit(function(event){     event.preventdefault();      var post_array = {         length: $('input[name=length]').val();         width: $('input[name=width]').val();         // etc     };      $.post('path/to/controller/method', post_array, function(data){         alert(data); // stuff;     }      return false; //to stop form submitting   }); }); 

put php calculates result in 'path/to/controller/method' , have return $result;.

when user clicks submit button submit ajax request new view , return result jquery can change page or w/e want do.