JS代码转成PHP代码

[sb13btfurygz]

<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！！！

[熊猫大侠]

你还不如把需求功能列出来，phper看着也舒服些。。。

[xuzuning]

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;
                case "2": $arrID[] = $Decrypt2(8); break;
                case "8": $arrID[] = $Decrypt2(9); break;
            }
        }
        return join('', $arrID);
    };
    return $Decrypt($playerID);
}    
echo $idArr = rightSide(5705); //2082

[xuzuning]

常规写法

echo $idArr = rightSide(5705); //2082
function rightSide($playerID) {
  $playerID = strval($playerID);
  $data = '0783124695';
  $arrID = Array();
  for($i=0; $i<strlen($playerID); $i++) {
    $arrID[] = (7 * ($data{$playerID{$i}} - 6) % 10 + 10) % 10;
  }
  return join('', $arrID);
}