Php 在数组中搜索特定代码

我有一些从数据库中获取的“代码”，并在php的表中对它们进行排序。第一个数组中以数字1开头的所有代码，第二个数组中以2开头的所有代码。。到9点

Array
(
[1] => Array
    (
        [0] => 1264
        [1] => 1264536
        [2] => 1264537
        [3] => 1264538
 )
[2] => Array
    (
        [0] => 213
        [1] => 21320
        [2] => 21321
        [3] => 21322          
)...

代码

function getCodes($codeEgr){

$oneTable = array();
$twoTable = array();
$threeTable = array();
$fourTable = array();
$fiveTable = array();
$sixTable = array();
$sevenTable = array();
$eightTable = array();
$nineTable = array();

foreach($codeEgr as $row)
{
        list($destination,$codeTegr,$price,$effectiveDate) = $row;
        $code = $codeTegr;            
        $first = substr($code,0,1);

        switch($first)
        {
                case 1:
                        $oneTable[] = $code;
                        break;
                case 2:
                        $twoTable[] = $code;
                        break;
                case 3:
                        $threeTable[] = $code;
                        break;
                case 4:
                        $fourTable[] = $code;
                        break;
                case 5:
                        $fiveTable[] = $code;
                        break;
                case 6:
                        $sixTable[] = $code;
                        break;
                case 7:
                        $sevenTable[] = $code;
                        break;
                case 8:
                        $eightTable[] = $code;
                        break;
                case 9:
                        $nineTable[] = $code;
                        break;
        }
}

$codeTable = array(1 => $oneTable,2 => $twoTable,3 => $threeTable,4 => $fourTable,5 => $fiveTable,
6 => $sixTable,7 => $sevenTable,8 => $eightTable,9 => $nineTable);
return $codeTable;

}

我想知道的是在这个数组（）中找到一个代码。例如，如果我有一个类似156545的代码，我只搜索第一个数组中的代码，而不搜索其他数组中的代码。如果我有一个类似265456的代码，我会在第二个数组中搜索。。。 如果发现或未发现，则返回true或false

---

我不知道如何使用php我是循环的初学者这可能是一个简单的方法：

$code= 123123;
$first = substr($code,0,1);

    switch($first)
    {
            case 1:
                    $key = array_search($code, $oneTable);
                    break;
            case 2:
                     $key = array_search($code, $twoTable);
                    break;
            and so on...
    }

---

我还为您重构了代码

function getCodes($codeEgr){
    $codes = array();

    foreach($codeEgr as $row)
    {
            list($destination,$codeTegr,$price,$effectiveDate) = $row;
            $code = $codeTegr;            
            $first = $code[0]; // get first digit of code string

            $codes[$first][] = $code;
    }

    return $codes;
}

function searchCode($codesArr, $code){
    $firstDigit = $code[0];

    $searchIn = (isset($codesArr[$firstDigit])) ? $codesArr[$firstDigit] : array();

    return array_search($code, $searchIn)
}

---

你们应该开始发布实际的数组，而不是数组结果。