@幕后导演，@老虎会游泳，那俩字符串不一样的
<?php
$obj = "A4NjFqYu5wPHsO0XTdDgMa2r1ZQocVte9UJBvk6/7=yRnhISGKblCWi+LpfE8xzm3";
$strs = '0c4a20131ebd12f0de2b54163fe318b1e';
$strs2 = '0c4a2013ebd12f0de2b54163fe318b1e';
$r = "";
for ($i = 0; $i < strlen($strs);) {
$ccc = $i < strlen($strs2) ? ord($strs2[$i]) : NAN; $i++;
$iii = ($ccc) >> 2;
$e = $i < strlen($strs2) ? ord($strs2[$i]) : NAN; $i++;
$aaa = ((3 & $ccc) << 4) | ($e >> 4);
$n = $i < strlen($strs2) ? ord($strs2[$i]) : NAN; $i++;
$bbb = ((15 & $e) << 2) | ($n >> 6);
$ccc = 63 & $n;
is_nan($e) ? $bbb = $ccc = 64 : is_nan($n) && ($ccc = 64);
$r = $r . $obj[$iii] . $obj[$aaa] . $obj[$bbb] . $obj[$ccc];
}
echo $r;
5258
