<?php // //VGR20032003 EE // // initialisations $string="AAABCCCCDDAAAAEEE"; $elements=array(); // array[*] of String in high-level languages // loop $i=0; // counter of chars $j=0; // counter of elements $oldchar=$string[1]; while ($i<strlen($string)) { $curchar=$string[$i]; if ($curchar<>$oldchar) { // add found string before continuing $elements[$j].=$oldchar; $oldchar=$curchar; $j++; } else $elements[$j].=$curchar; // if we broke sequence $i++; } // while string not parsed completely $j++; // end of loop // display for ($i=0; $i<$j;$i++) echo "element $i = '{$elements[$i]}' "; ?>