explode < PHP
The explode function splits a string by a delimiter and returns an array. Implodes() does the opposite.
$sentence = "Four score and seven years ago.";
$sentenceExplode = explode(" ", $sentence);
print_r($sentenceExplode);
// Array ( [0] => Four [1] => score [2] => and [3] => seven [4] => years [5] => ago. )