Online PHP editor | refs for PQPLS

<?php $filepaths = '../images/box1/IMG_3158.JPG../images/box1/IMG_3161.JPG../images/box1/IMG_3163.JPG../images/box1/IMG_3158.JPG../images/box1/IMG_3161.JPG../images/box1/IMG_3163.JPG'; var_export(preg_split('/\.JPG\K(?!$)/', $filepaths)); echo "\n---\n"; var_export(preg_split('/(?!^)(?=\.\.)/', $filepaths)); echo "\n---\n"; var_export(preg_split('/\.JPG\K/', $filepaths, 0, PREG_SPLIT_NO_EMPTY)); echo "\n---\n"; var_export(preg_split('/(?=\.\.)/', $filepaths, 0, PREG_SPLIT_NO_EMPTY)); echo "\n---\n"; var_export(preg_split('#\.\w{3}\K(?=\.\./)#', $filepaths));