Difference between join and implode in php. 
In this example, I will show how to use join and implode in php.

Join : Join is an Alias of implode().

Example:
<?php
$arr = array('Rajesh', 'India', 'Tutorials');
$str = join(",", $arr);
echo $str; 
?>
Output: Rajesh,India,Tutorials.

implode: implode Returns a string from array elements.

Example:
<?php
$arr = array('Rajesh', 'India', 'Tutorials');
$str = implode(",", $arr);
echo $str; 
?>
Output:Rajesh,India,Tutorials.