<?php $x = ' \$ \_ \copyright \dag \ddag \dots \P \pounds \S \{ \} \# '; $x = array_filter(preg_split('/\s+/', $x)); usort($x, function ($a, $b) { return strcmp(strtolower($a), strtolower($b)); }); foreach ($x as $xx) { echo $xx, "\n"; }
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