Question

我试图让我的提交按钮变成一种不同的颜色并在我的一些if语句中禁用它但由于某种原因，如果我在我的函数之外回显$submitButtonColor & submitButtonDisabled它没有获得新的颜色。如果我在我的功能凭证中回应它们，那么它的工作正常。我必须在功能之外使用它们，因为我必须稍后在HTML中使用它们。

所以我的问题是我无法在函数外使用我的变量，即使我使用的是$ GLOBALS

的index.php

<?php
    $date = "";
    $begin = "";
    $tijdsduur = "";
    $aantal = "";
    $color = "#29abe2";
    $discountAmount = "";
    $voucherexpired = "none";
    $voucherexists = "none";
    $getVoucherList = "https://www.planyo.com/rest/?method=list_vouchers&api_key=YOURKEY&resource_id=110556";
    $cleanVoucherList = preg_replace("/ /", "%20", $getVoucherList);
    $voucherlist = file_get_contents("$cleanVoucherList");
    $voucherList = json_decode($voucherlist, true);
    $submitButtonColor = "#29abe2";
    $submitButtonDisabled = "";

    function voucher()
    {
        $testsubject = $_POST['voucher'];
        $doesvoucherexists = false;
        foreach($GLOBALS['voucherList']['data']['results'] as $testVoucher => $testVoucherArr) {
            if ($testsubject == $testVoucherArr['code']) {
                $doesvoucherexists = true;
                if (date("Y-m-d") <= $testVoucherArr['rental_end_date']) {
                    $GLOBALS['discountAmount'] = $testVoucherArr['discount_value'];
                    $GLOBALS['submitButtonColor'] = "#29abe2";
                    $GLOBALS['submitButtonDisabled'] = "";
                    echo "<span style='color: #cc00cc'>De voucher " . $testsubject . " is gebruikt voor een korting van €" . $GLOBALS['discountAmount'] . "</span>";
                }
                else {
                    $GLOBALS['voucherexpired'] = "inline";
                    $GLOBALS['submitButtonColor'] = "#cc00cc";
                    $GLOBALS['submitButtonDisabled'] = "disabled";
                    echo "<span style='color: #cc00cc'>Deze voucher is verlopen</span>";
                }
                break;  
            }
        }
        if ($doesvoucherexists === false && $testsubject == ""){
                $GLOBALS['submitButtonColor'] = "#29abe2";
                $GLOBALS['submitButtonDisabled'] = "";
        }elseif ($doesvoucherexists === false){
            $GLOBALS['voucherexists'] = "inline";
            $GLOBALS['submitButtonColor'] = "#cc00cc";
            $GLOBALS['submitButtonDisabled'] = "disabled";
            echo "<span style='color: #cc00cc'>Deze voucher is niet geldig</span>";
        }
    }
    echo $GLOBALS['submitButtonColor'] . $GLOBALS['submitButtonDisabled']; 

    if (isset($_POST['date']) && isset($_POST['quantity'])) {
      if (isset($_POST['date'])) {
        voucher();
        $date = $_POST['date'];
        $begin = $_POST['begin'];
        $tijdsduur = $_POST['eind'];
        $aantal = $_POST['quantity'];
        $eind = $begin + $tijdsduur;
        $startTijd = "$date " . $begin;
        $eindTijd = "$date " . $eind . ":00";
        $canmakereservation = "https://www.planyo.com/rest/?method=can_make_reservation&api_key=YOURKEY&resource_id=110556&start_time=$startTijd&end_time=$eindTijd&quantity=$aantal";
        $cleancanmakereservation = preg_replace("/ /", "%20", $canmakereservation);
        $reservationavailable = file_get_contents("$cleancanmakereservation");
        $reservationAvailable = json_decode($reservationavailable, true);
        $getrentalprice = "https://www.planyo.com/rest/?method=get_rental_price&api_key=YOURKEY&resource_id=110556&quantity=1&start_time=$startTijd&end_time=$eindTijd&quantity=$aantal";
        $cleanRentalPrice = preg_replace("/ /", "%20", $getrentalprice);
        $rentalprice = file_get_contents("$cleanRentalPrice");
        $rentalPrice = json_decode($rentalprice, true);
        $price = $rentalPrice['data']['total'] - $GLOBALS['discountAmount'];

        if ($reservationAvailable['data']['is_reservation_possible'] == true){
          $color = "#29abe2";
          echo "Uw huurprijs exclusief borg: €" . $price;
        }else{
          $color = "#cc00cc";
          echo $reservationAvailable['data']['reason'];
            $GLOBALS['submitButtonColor'] = "#cc00cc";
            $GLOBALS['submitButtonDisabled'] = "disabled";

        }
        echo "$color";
      }
      exit;
    }
    ?>

Answer 1

如果我理解你想要实现的目标。基本上，您希望更改函数内部的变量值并访问函数外部的结果。要做到这一点，你可以这样做：

创建一个函数：

function voucher($btnDisabled){
 if(someConditions == true){
   $btnDisabled = "disabled";
 }else{
   $btnDisabled = "enabled";
 }
 return $btnDisabled;
}

调用您的函数并传递$submitButtonDisabled作为参数：

$submitButtonDisabled  = '';

 voucher($submitButtonDisabled);

//in here, $submitButtonDisabled become 'disabled' or 'enabled' based on the conditions;
$submitButtonDisabled;

希望你明白〜

Answer 2

试试这个

    $date = "";
    $begin = "";
    $tijdsduur = "";
    $aantal = "";
    $color = "#29abe2";
    $discountAmount = "";
    $voucherexpired = "none";
    $voucherexists = "none";
    $getVoucherList = "https://www.planyo.com/rest/?method=list_vouchers&api_key=YOURKEY&resource_id=110556";
    $cleanVoucherList = preg_replace("/ /", "%20", $getVoucherList);
    $voucherlist = file_get_contents("$cleanVoucherList");
    $voucherList = json_decode($voucherlist, true);
    $submitButtonColor = "#29abe2";
    $submitButtonDisabled = "";

    function voucher($submitButtonColor = "#29abe2", $submitButtonDisabled  = "" )
    {
        $testsubject = $_POST['voucher'];
        $doesvoucherexists = false;
        foreach($GLOBALS['voucherList']['data']['results'] as $testVoucher => $testVoucherArr) {
            if ($testsubject == $testVoucherArr['code']) {
                $doesvoucherexists = true;
                if (date("Y-m-d") De voucher " . $testsubject . " is gebruikt voor een korting van €" . $GLOBALS['discountAmount'] . "";
                }
                else {
                    $GLOBALS['voucherexpired'] = "inline";
                    submitButtonColor = "#cc00cc";
                    $submitButtonDisabled = "disabled";
                    echo "Deze voucher is verlopen";
                }
                break;  
            }
        }
        if ($doesvoucherexists === false && $testsubject == ""){
                $submitButtonColor = "#29abe2";
                $submitButtonDisabled = "";
        }elseif ($doesvoucherexists === false){
            $GLOBALS['voucherexists'] = "inline";
            $submitButtonColor = "#cc00cc";
            $submitButtonDisabled = "disabled";
            echo "Deze voucher is niet geldig";
        }

        return array('submitButtonDisabled' => $submitButtonDisabled, 'submitButtonColor' => $submitButtonColor);
    }
    //echo $GLOBALS['submitButtonColor'] . $GLOBALS['submitButtonDisabled']; 

    if (isset($_POST['date']) && isset($_POST['quantity'])) {
      if (isset($_POST['date'])) {
        $tmp = voucher($submitButtonColor, $submitButtonDisabled);
        $submitButtonDisabled = $tmp['submitButtonDisabled']
        $submitButtonColor = $tmp['submitButtonColor']
        echo $submitButtonColor . $submitButtonDisabled; 
        $date = $_POST['date'];
        $begin = $_POST['begin'];
        $tijdsduur = $_POST['eind'];
        $aantal = $_POST['quantity'];
        $eind = $begin + $tijdsduur;
        $startTijd = "$date " . $begin;
        $eindTijd = "$date " . $eind . ":00";
        $canmakereservation = "https://www.planyo.com/rest/?method=can_make_reservation&api_key=YOURKEY&resource_id=110556&start_time=$startTijd&end_time=$eindTijd&quantity=$aantal";
        $cleancanmakereservation = preg_replace("/ /", "%20", $canmakereservation);
        $reservationavailable = file_get_contents("$cleancanmakereservation");
        $reservationAvailable = json_decode($reservationavailable, true);
        $getrentalprice = "https://www.planyo.com/rest/?method=get_rental_price&api_key=YOURKEY&resource_id=110556&quantity=1&start_time=$startTijd&end_time=$eindTijd&quantity=$aantal";
        $cleanRentalPrice = preg_replace("/ /", "%20", $getrentalprice);
        $rentalprice = file_get_contents("$cleanRentalPrice");
        $rentalPrice = json_decode($rentalprice, true);
        $price = $rentalPrice['data']['total'] - $GLOBALS['discountAmount'];

        if ($reservationAvailable['data']['is_reservation_possible'] == true){
          $color = "#29abe2";
          echo "Uw huurprijs exclusief borg: €" . $price;
        }else{
          $color = "#cc00cc";
          echo $reservationAvailable['data']['reason'];
            $submitButtonColor = "#cc00cc";
            $submitButtonDisabled = "disabled";
        }
        echo "$color";
      }
      exit;
    }
    ?>

不能在函数

2 个答案: