How to echo data array

Question

I'm new for this, can anyone solve my problem? this is my code :

<?php

$data = array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
$datastart = 3;
$string = join(',', $data);
echo $string;

?>

This echo will be result :

Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday 

I want a result like this:

Wednesday,Thursday,Friday,Saturday,Sunday,Monday,Tuesday

thank you for the answer :)

Answer 1

You can use array_slice to extract the portions of your array in the order you want to output them, and then array_merge to put them back together:

$data = array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
$datastart = 3;
$string = implode(',', array_merge(array_slice($data, $datastart), array_slice($data, 0, $datastart)));
echo $string;

Or you can use a simple for loop:

$len = count($data);
$string = '';
for ($i = 0; $i < $len; $i++) {
    $string .= ($i > 0 ? ',' : '') . $data[($i + $datastart) % $len];
}
echo $string;

Output:

Wednesday,Thursday,Friday,Saturday,Sunday,Monday,Tuesday

Demo on 3v4l.org