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run code in 150+ php & hhvm versions
Bugs & Features
<?php $strings = array('SS2014','SU2014','FW2014','SS2013','FW2013','NW2012'); $cleanUpResult = array(); $counter = 0; $previousYear = ''; $currentIndex = 10; $previousYear = '2014'; foreach($strings as $row){ // if($counter == 0){ // $previousYear = substr($row, -4); // } if($previousYear !== substr($row, -4)){ $currentIndex = $currentIndex + 10; } if($counter > 0){ $previousYear = substr($row, -4); } switch(substr($row, 0, 2)){ case 'SS': $cleanUpResult[$currentIndex + 1] = $row; break; case 'SU': $cleanUpResult[$currentIndex + 2] = $row; break; case 'FW': $cleanUpResult[$currentIndex + 3] = $row; break; case 'WI': $cleanUpResult[$currentIndex + 4] = $row; break; case 'XM': $cleanUpResult[$currentIndex + 5] = $row; break; case 'CO': $cleanUpResult[$currentIndex + 6] = $row; break; case 'NW': $cleanUpResult[$currentIndex + 7] = $row; break; } $cleanUpResult[] = $row; $counter++; } var_dump($cleanUpResult);
Output for 4.3.0 - 7.1.0
array(10) { [11]=> string(6) "SS2014" [12]=> string(6) "SU2014" [13]=> string(6) "FW2014" [14]=> string(6) "FW2014" [21]=> string(6) "SS2013" [22]=> string(6) "SS2013" [23]=> string(6) "FW2013" [24]=> string(6) "FW2013" [37]=> string(6) "NW2012" [38]=> string(6) "NW2012" }