Online PHP editor | refs for gFa40

<?php $seriesArray = array(1, 2, 3, 5, 7, 8, 11, 12, 15); $result = array(); $indx = 0; foreach($seriesArray as $key => $val){ $tmp = $seriesArray[$key]; $next = (isset($seriesArray[$key+1]))? $seriesArray[$key+1] : ''; if($next != ''){ if(!isset($result[$indx])) $result[$indx] = array(); if(($tmp+1) == $next ){ $result[$indx][] = $tmp; }else{ $result[$indx][] = $tmp; $indx++; } }else{ $result[$indx][] = $tmp; } } foreach($result as $key => $val){ echo "Series ".($key+1)." : ".implode(",",$result[$key])."\n"; }