<?php // Positive numbers: $a=substr("tag1,tag10,tag11,tag13,tag15,tag17,tag19,tag20,tag4,tag9,tag8,tag7,tag6,tag5,tag3,tag2,tag18,tag16,tag14,tag12",0,4); echo $a; echo preg_replace("/tag/","",substr("tag1,tag10,tag11,tag13,tag15,tag17,tag19,tag20,tag4,tag9,tag8,tag7,tag6,tag5,tag3,tag2,tag18",5)); ?>
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