您要保留数字->字母分配的一般结构是一个或多个数组，类似于：
// 0 = N, 1 = L, 2 = T, 3 = D, 4 = R, 5 = V or F, 6 = B or P, 7 = Z, // 8 = H or CH or J, 9 = G$numberMap = new Array ( 0 => new Array("N"), 1 => new Array("L"), 2 => new Array("T"), 3 => new Array("D"), 4 => new Array("R"), 5 => new Array("V", "F"), 6 => new Array("B", "P"), 7 => new Array("Z"), 8 => new Array("H", "CH", "J"), 9 => new Array("G"),);然后，一些递归逻辑为我们提供了类似于以下功能：
function GetEncoding($number) { $ret = new Array(); for ($i = 0; $i < strlen($number); $i++) { // We're just translating here, nothing special. // $var + 0 is a cheap way of forcing a variable to be numeric $ret[] = $numberMap[$number[$i]+0]; }}function PrintEncoding($enc, $string = "") { // If we're at the end of the line, then print! if (count($enc) === 0) { print $string."n"; return; } // Otherwise, soldier on through the possible values. // Grab the next 'letter' and cycle through the possibilities for it. foreach ($enc[0] as $letter) { // And call this function again with it! PrintEncoding(array_slice($enc, 1), $string.$letter); }}递归三声欢呼！这将通过以下方式使用：
PrintEncoding(GetEncoding("052384"));并且，如果您真的希望将其作为数组，请使用输出缓冲并使用“ n”作为拆分字符串进行爆炸。
