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Counting the value when calling a function


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Hi all,

 

I need your help. I am working on a function to add the day value that start from 0 to 6. I want to count it up the value for each day so I can connect to each url for each day, but on my code it will only show the value as 0 for each day. 

 

Here is the code:

 

<?php


$channels = json_decode(file_get_contents('channels.json'), true);
$day = 0;


function get_shows($channel_id, DateTime $dt, $duration=1440, $skip_finished = true) 
{
    $url = 'http://example.comapi/GS?cid=' . $channel_id . '&offset=+00.00&day=' .$day++;
    


    echo $url;
    $day++;




}




if(!isset($_GET['id']) || !isset($channels[$_GET['id']])) 
{




}
else
{
    // today + 6 following days
   for($day=0; $day<=6; $day++) 
   {
      // display date      
      echo '<h3>', $dt->format('Y-m-d (l)'), '</h3>';
      
      // display shows
      foreach(get_shows($channel_id, $dt, $duration) as $show) 
      {
            
      }
      $dt->add(new DateInterval('P1D'));
      $dt->setTime(0, 0, 0);
    }
}
?>

 

 
 
 
Output:
 
 
2018-05-04 (Friday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-05 (Saturday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-06 (Sunday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-07 (Monday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-08 (Tuesday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-09 (Wednesday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-10 (Thursday)
http://example.com/api/GS?cid=44630&offset=+00.00&day=0

 

 

 

 

Here is what I want to achieve:

 

 

2018-05-04 (Friday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=0

2018-05-05 (Saturday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=1

2018-05-06 (Sunday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=2

2018-05-07 (Monday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=3

2018-05-08 (Tuesday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=4

2018-05-09 (Wednesday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=5

2018-05-10 (Thursday)

http://example.com/api/GS?cid=44630&offset=+00.00&day=6

 

 

Can you please show me an example how I can add the value up for each day that start from 0 to 6 when I am calling on get_show function??

Edited by mark107
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Variables outside of functions are not available inside of functions.

 

Make $day be a function parameter just like the others. Increment it outside the function too, because doing it inside only affects the value the function has at that moment.

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