<script type="text/javascript">
function rightSide(playerID) {
this.Decrypt2 = function(data) {
var b = (7 * (data - 6) % 10 + 10) % 10;
return b.toString();
alert(b.toString());
}
this.Decrypt = function(playerID) {
playerID = playerID.toString();
var arrID = new Array();
for (var i = 0; i < playerID.length; i = i + 1) {
var a = playerID.substr(i, 1);
switch (a) {
case "0": arrID.push(this.Decrypt2(0)); break;
case "4": arrID.push(this.Decrypt2(1)); break;
case "5": arrID.push(this.Decrypt2(2)); break;
case "3": arrID.push(this.Decrypt2(3)); break;
case "6": arrID.push(this.Decrypt2(4)); break;
case "9": arrID.push(this.Decrypt2(5)); break;
case "7": arrID.push(this.Decrypt2(6)); break;
case "1": arrID.push(this.Decrypt2(7)); break;
case "2": arrID.push(this.Decrypt2(8)); break;
case "8": arrID.push(this.Decrypt2(9)); break;
}
}
return arrID.join('');
}
return this.Decrypt(playerID);
}
var idArr = rightSide(5705);
以上JS代码，帮忙转成PHP代码，谢谢各位了！！！
------解决方案--------------------
按 php 闭包直译（需 >= php 5.3）
function rightSide($playerID) {
$Decrypt2 = function($data) {
$b = (7 * ($data - 6) % 10 + 10) % 10;
return $b;
};
$Decrypt = function($playerID) use ($Decrypt2) {
$playerID = "$playerID";
$arrID = Array();
for ($i = 0; $i < strlen($playerID); $i = $i + 1) {
$a = substr($playerID, $i, 1);
switch ($a) {
case "0": $arrID[] = $Decrypt2(0); break;
case "4": $arrID[] = $Decrypt2(1); break;
case "5": $arrID[] = $Decrypt2(2); break;
case "3": $arrID[] = $Decrypt2(3); break;
case "6": $arrID[] = $Decrypt2(4); break;
case "9": $arrID[] = $Decrypt2(5); break;
case "7": $arrID[] = $Decrypt2(6); break;
case "1": $arrID[] = $Decrypt2(7); break;