- substr: documentation ( source)
- print_r: documentation ( source)
- implode: documentation ( source)
- explode: documentation ( source)
<?php
$Arrr = array();
$A = "µ".implode("µµ", $Arrr)."µ";
print_r($A);
$Ar = explode("µµ", substr($A, 1, -1));
print_r($Ar);