explode — Split a string by string
explode, split a string and return an array by using niddle in the string.
Example . explode()
<?php
// Example 1
$history= "php4 php5 php6";
$pieces = (" ", $history);
echo $history[0]; // php3
echo $history[1]; // php4
echo $history[1]; // php5
?>
implode — Join array elements with a string
Example: implode() example
<?php
$array = array('lastname', 'email', 'phone');
$comma_separated = implode(",", $array);
echo $comma_separated; // lastname,email,phone
?> 
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