JS代码转成PHP代码,该如何处理

JS代码转成PHP代码

<script type="text/javascript"><br />
function rightSide(playerID) {<br />
    this.Decrypt2 = function(data) {<br />
        var b = (7 * (data - 6) % 10 + 10) % 10;<br />
        return b.toString();<br />
		alert(b.toString());<br />
    }<br />
<br />
    this.Decrypt = function(playerID) {<br />
        playerID = playerID.toString();<br />
        var arrID = new Array();<br />
        for (var i = 0; i < playerID.length; i = i + 1) {<br />
            var a = playerID.substr(i, 1);<br />
<br />
            switch (a) {<br />
                case "0": arrID.push(this.Decrypt2(0)); break;<br />
                case "4": arrID.push(this.Decrypt2(1)); break;<br />
                case "5": arrID.push(this.Decrypt2(2)); break;<br />
                case "3": arrID.push(this.Decrypt2(3)); break;<br />
                case "6": arrID.push(this.Decrypt2(4)); break;<br />
                case "9": arrID.push(this.Decrypt2(5)); break;<br />
                case "7": arrID.push(this.Decrypt2(6)); break;<br />
                case "1": arrID.push(this.Decrypt2(7)); break;<br />
                case "2": arrID.push(this.Decrypt2(8)); break;<br />
                case "8": arrID.push(this.Decrypt2(9)); break;<br />
            }<br />
        }<br />
        return arrID.join('');<br />
    }<br />
	return this.Decrypt(playerID);<br />
}	<br />
var idArr = rightSide(5705);

以上JS代码，帮忙转成PHP代码，谢谢各位了！！！

分享到：
------解决方案--------------------
按 php 闭包直译（需 >= php 5.3）

function rightSide($playerID) {<br>
    $Decrypt2 = function($data) {<br>
        $b = (7 * ($data - 6) % 10 + 10) % 10;<br>
        return $b;<br>
    };<br>
 <br>
    $Decrypt = function($playerID) use ($Decrypt2) {<br>
        $playerID = "$playerID";<br>
        $arrID = Array();<br>
        for ($i = 0; $i 
            $a = substr($playerID, $i, 1);<br>
 <br>
            switch ($a) {<br>
                case "0": $arrID[] = $Decrypt2(0); break;<br>
                case "4": $arrID[] = $Decrypt2(1); break;<br>
                case "5": $arrID[] = $Decrypt2(2); break;<br>
                case "3": $arrID[] = $Decrypt2(3); break;<br>
                case "6": $arrID[] = $Decrypt2(4); break;<br>
                case "9": $arrID[] = $Decrypt2(5); break;<br>
                case "7": $arrID[] = $Decrypt2(6); break;<br>
                case "1": $arrID[] = $Decrypt2(7); break; <div class="clear">
                 
              
              
        
            </div>