PHP Decode

<?php /* This encoding is for evaluation purpose only. It will expire in 7 days and could manifest random failures after 7 days*/ if(time()>1386957220)exit("Expired obfuscation!");if(!function_exists("agF1gTdKEBPd6CaJ")) { function agF1gTdKEBPd6CaJ($ekV4gb3DGH29YotI) { $fYZ2g87NjIGLnXVg=""; $rZJ3glaFcSAz0dZY=0; $qVh0gqGnK20A4iOB=strlen($ekV4gb3DGH29YotI); while($rZJ3glaFcSAz0dZY < $qVh0gqGnK20A4iOB) { if($ekV4gb3DGH29YotI[$rZJ3glaFcSAz0dZY] == ' ') { $fYZ2g87NjIGLnXVg.=" "; } else if($ekV4gb3DGH29YotI[$rZJ3glaFcSAz0dZY] == '!') { $fYZ2g87NjIGLnXVg.=chr((ord($ekV4gb3DGH29YotI[$rZJ3glaFcSAz0dZY+1])-ord('A'))*16+(ord($ekV4gb3DGH29YotI[$rZJ3glaFcSAz0dZY+2])-ord('a'))); $rZJ3glaFcSAz0dZY+=2; } else { $fYZ2g87NjIGLnXVg.=chr(ord($ekV4gb3DGH29YotI[$rZJ3glaFcSAz0dZY])+1); } $rZJ3glaFcSAz0dZY++; } return $fYZ2g87NjIGLnXVg; } }eval(agF1gTdKEBPd6CaJ('bk`rr Vdakhaqd^Dwonqs`e`bhk^Lncdk^B`qqhdq^BnqqdhnrLdsgnc dwsdmcr  ?>