- implode: documentation ( source)
<?php
/*
$input = array(
array(
'tag_name' => 'google'
),
array(
'tag_name' => 'technology'
)
);*/
$arr = array('Hello','World!','Beautiful','Day!');
echo implode(",",$arr);
//$input = "asd,jhg,lll";
//echo implode(', ', $input);