php - Get Value From Textbox to File_get_contents -

<div class="form-group">     <label for="inputsm">put url</label>     <input class="form-control input-sm" id="inputsm" type="text">     <br>     <input type="submit" class="btn btn-info" value="count contact"> </div> 

this code text box , button

<?php $gettext = file_get_contents("", true); $contact = substr_count($gettext ,"contactid"); print_r($contact); ?> 

and code php value , count

example

i need put link https://s3-ap-southeast-1.amazonaws.com/cloudpoc2/us-east-1%3a4502ecdd-1994-40da-8eb2-b6ccc96d6be0/contacts/contact_2014_11_19_09_53_28_278.vcf in text box , click button show number of contact in file

 $gettext = file_get_contents("https://s3-ap-southeast-1.amazonaws.com/cloudpoc2/us-east-1%3a4502ecdd-1994-40da-8eb2-b6ccc96d6be0/contacts/contact_2014_11_19_09_53_28_278.vcf", true); 

you have submit form through post or get. example use post. must assign name elements you're posting (such url). untested, may have errors. give idea.

<?php  if(isset($_post['submit'])){     $url = $_post['url'];     $gettext = file_get_contents("$url", true);     $contact = substr_count($gettext ,"contactid");     print_r($contact); } ?>   <form method="post" action="?">     <div class="form-group">         <label for="inputsm">put url</label>         <input name="url" class="form-control input-sm" id="inputsm" type="text">         <br>         <input name="submit" type="submit" class="btn btn-info" value="count contact">     </div> </form>