Online PHP editor | refs for i7arU

@ 2017-08-25T08:58:34Z

<?php

$arr =Array
(
    0 => Array
        (
            0 => 8147,
            1 => 3
        ),

    1 => Array
        (
            0 => 8204,
            1 => 20
        )

);
$match_array = array();
foreach($arr as $key=>$value)
{
    $match_array[] = $value[0];
}
echo implode(",",$match_array);