<?php function chars($a) { return addslashes(implode("", $a)); } $set = implode("", array_map("chr", range(32, 127))); var_dump(preg_match_all('/[A-\d]/', $set, $m) ? chars($m[0]) : null); var_dump(preg_match_all('/[\d-A]/', $set, $m) ? chars($m[0]) : null);
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