PHP implode() function returns a string from elements of an array, the following example.
<html>
<body>
<h3>Implode Function delimeter comma</h3>
<?php
$arr=array ('a','b','c');
echo implode(",",$arr);
?>
</body>
</html>
Output code:
a,b,c
PHP explode() function is used to "Split a string by a specified string into pieces breaks a string into an array".
<html>
<body>
<h3>Implode Function delimeter comma</h3>
<?php
$arr='a b c';
$result = explode(",",$arr);
?>
</body>
</html>
Output code display with print_r
<?php print_r($result); ?>
array([0]=>a,[1]=>b.[2]=>c);