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run code in 200+ php & hhvm versions
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<?php $ncs = "NCS S 1515-Y40R"; $ncs = strtolower($ncs); if (!(preg_match("/^(.* )?\d{4}-[rgby](\d{2}[rgby])?$/", $ncs))) { echo "#000000"; } echo $ncs;
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0alpha1
ncs s 1515-y40r