在PHP中调用函数内部函数

Question

是否可以在函数内调用函数？我在这里寻找解决方案。但老实说，我不知道如何在我的代码中实现它。

这是我第一次学习从头开始编写高级PHP代码，请帮我修改代码。

这是我的代码

<?php
function postdata($datatype){
    if ($datatype == "processbalance"):
        $site           = "ADJUST BALANCE";
        $signature      = sha1($transactId.$cardNo.$amount.$transactionDate.$merchantID.$site.$apikey);
        $appSignature   = sha1($transactId.$cardNo.$amount.$transactionDate.$merchantID.$site.$signature.$appkey);
        $params         = array('transactId'=>$transactId,'cardNo'=>$cardNo,'amount'=>$amount,'transactionDate'=>$transactionDate,'partnerID'=>$merchantID,'site'=>$site,'signature'=>$signature,'appSignature'=>$appSignature,'submit'=>$submit);
    elseif ($datatype == "processreward"):
        $site           = "ADJUST POINT";
        $signature      = sha1($transactId.$cardNo.$reward.$transactionDate.$merchantID.$site.$apikey);
        $appSignature   = sha1($transactId.$cardNo.$reward.$transactionDate.$merchantID.$site.$signature.$appkey);
        $params         = array('transactId'=>$transactId,'cardNo'=>$cardNo,'reward'=>$reward,'items'=>$items,'transactionDate'=>$transactionDate,'merchantId'=>$merchantID,'site'=>$site,'signature'=>$signature,'appSignature'=>$appSignature,'submit'=>$submit);
    elseif ($datatype == 'processdeactivate'):
        $site           = "DEACTIVATE CARD";
        $status         = "False";
        $signature      = sha1($transactId.$oldnbc.$status.$status.$transactionDate.$merchantID.$site.$apikey);
        $appSignature   = sha1($transactId.$oldnbc.$status.$status.$transactionDate.$merchantID.$site.$signature.$appkey);
        $params         = array('transactId'=>$transactId,'cardNo'=>$oldnbc,'status'=>$status,'isGold'=>$status,'merchantDate'=>$transactionDate,'merchantId'=>$merchantID,'site'=>$site,'signature'=>$signature,'appSignature'=>$appSignature,'submit'=>$submit);
    endif;

    $encoded_params = array();

    foreach ($params as $k => $v){
        $encoded_params[] = urlencode($k).'='.urlencode($v);
    }

    $url = $url.implode('&', $encoded_params);
    $arrContextOptions = array("ssl"=>array("verify_peer"=>false,"verify_peer_name"=>false,),); 
    $url = file_get_contents($url, false, stream_context_create($arrContextOptions));
    $getstatus = json_decode($url, true);

    if ($getstatus['Status'] == 1):
        echo $site." Succedd!";
    else:
        echo $site." Failed!";
    endif;
}

function nbchd($type,$cardNo,$amount,$reward,$oldnbc){
    if ($type == "migration" || $type == "adjustment"):
        if ($amount != ""):
            postdata("processbalance");
            echo $result;
        endif;
        if ($reward != ""):
            postdata("processreward");
            echo $result;
        endif;
    elseif ($type == "replacement"):
        if ($oldnbc != ''):
            //post balance&reward to new nbchd
            if ($amount != ""):
                postdata("processbalance");
                echo $result;
            endif;
            if ($reward != ""):
                postdata("processreward");
                echo $result;
            endif;

            //deactivating oldnbc
            $cardNo = $oldnbc;
            if ($amount != ""):
                postdata("processbalance");
                echo $result;
            endif;
            if ($reward != ""):
                postdata("processreward");
                echo $result;
            endif;
            postdata('processdeactivate');
            echo $result;
        else:
            echo "Deactivating Error, Please fill OldNBC Number to continue";
        endif;
    endif;
}

date_default_timezone_set("Asia/Jakarta");
$apikey         = "8ECDD8C5DF4647F0E6EB8CDEEC836E7DA8BACE5A3677424B";
$appkey         = "27D5C651BBC94AE19BDF4F5E2B542667AE7C6EAE62D3BA34";
$transactId     = "";
$url            = "https://192.168.0.39:444/merchantwebapi/api/merchant?";
$submit         = "Invoke";
$merchantDate   = date("Y-m-d H:i:s", time());
$transactionDate= $merchantDate;
$merchantID     = "BLITZ";
$merchantId     = $merchantID;

$type   = "adjustment";
$cardNo = "6048180000000017";
$amount = "10";
$reward = "1";
$oldnbc = "";

nbchd($type,$cardNo,$amount,$reward,$oldnbc);
?>

上面的代码在我的本地网络中运行以调用API函数，所以我很抱歉我不能将其作为工作代码发布。

运行代码后，我得到一些消息告诉我所有变量都是Undefined，例如：

  

注意：未定义的变量：cardNo in    C：\ xampp \ htdocs \ nbchd \ function.php 在线 5

     

注意：未定义的变量：transactId in    C：\ xampp \ htdocs \ nbchd \ function.php 在线 5

     

注意：未定义的变量：金额    C：\ xampp \ htdocs \ nbchd \ function.php 在线 5

     

注意：未定义的变量：transactionDate in    C：\ xampp \ htdocs \ nbchd \ function.php 在线 5

     

注意：未定义的变量：商家ID in    C：\ xampp \ htdocs \ nbchd \ function.php 在线 5

@ john-conde我认为这个问题与PHP: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset"不一样。调用函数时，变量丢失了。这段代码在直接写入时起作用，而不是从函数中写入。

这是我的简单代码

<?php
date_default_timezone_set("Asia/Jakarta");
$apikey         = "8ECDD8C5DF4647F0E6EB8CDEEC836E7DA8BACE5A3677424B";
$appkey         = "27D5C651BBC94AE19BDF4F5E2B542667AE7C6EAE62D3BA34";
$transactId     = "";
$url            = "https://192.168.0.39:444/merchantwebapi/api/merchant?";
$submit         = "Invoke";
$merchantDate   = date("Y-m-d H:i:s", time());
$transactionDate= $merchantDate;
$merchantID     = "BLITZ";
$merchantId     = $merchantID;
$type           = "adjustment";
$cardNo         = "6048180000000017";
$amount         = "10";
$reward         = "1";
$oldnbc         = "";

if ($type == "adjustment"):
    if ($amount != ""):
        $site           = "ADJUST BALANCE";
        $signature      = sha1($transactId.$cardNo.$amount.$transactionDate.$merchantID.$site.$apikey);
        $appSignature   = sha1($transactId.$cardNo.$amount.$transactionDate.$merchantID.$site.$signature.$appkey);
        $params         = array('transactId'=>$transactId,'cardNo'=>$cardNo,'amount'=>$amount,'transactionDate'=>$transactionDate,'partnerID'=>$merchantID,'site'=>$site,'signature'=>$signature,'appSignature'=>$appSignature,'submit'=>$submit);
        $encoded_params = array();

        foreach ($params as $k => $v){
            $encoded_params[] = urlencode($k).'='.urlencode($v);
        }

        $url = $url.implode('&', $encoded_params);
        $arrContextOptions = array("ssl"=>array("verify_peer"=>false,"verify_peer_name"=>false,),); 
        $url = file_get_contents($url, false, stream_context_create($arrContextOptions));
        $getstatus = json_decode($url, true);

        if ($getstatus['Status'] == 1):
            echo $site." Succedd!";
        else:
            echo $site." Failed!";
        endif;
    endif;
endif;
?>