問題描述

我有兩個(gè) PHP 文件.首先，我根據(jù) $_GET 值設(shè)置了一個(gè) cookie，然后調(diào)用一個(gè)函數(shù)，然后將該值發(fā)送到另一個(gè)文件.這是我在 join.php 中使用的一些代碼:

I have two PHP files. In the first I set a cookie based on a $_GET value, and then call a function which then sends this value on to the other file. This is some code which I'm using in join.php:

include('inc/processJoin.php');
setcookie("site_Referral", $_GET['rid'], time()+10000);
$joinProc = new processJoin();
$joinProc->grabReferral($_COOKIE["site_Referral"]);

然后另一個(gè)文件 (processJoin.php) 會將此值(以及其他)發(fā)送到其他文件，這些文件將處理數(shù)據(jù)并將其插入到數(shù)據(jù)庫中.

The other file (processJoin.php) will then send this value (among others) to further files which will process and insert the data into the database.

我遇到的問題是，當(dāng) processJoin.php 中的 grabReferral() 函數(shù)被調(diào)用時(shí)，$referralID 變量是沒有在全球范圍內(nèi)定義 - processJoin.php 中的其他函數(shù)似乎無法訪問它以發(fā)送到其他文件/進(jìn)程.

The problem I'm having is that when the grabReferral() function in processJoin.php is called, the $referralID variable isn't being defined on a global scale - other functions in processJoin.php can't seem to access it to send to other files/processes.

我在 processJoin.php 中試過這個(gè):

grabReferral($rid) {
   global $ref_id;
   $ref_id = $rid;
}

someOtherFunction() {
   sendValue($ref_id);
}

但是 someOtherFunction 似乎無法訪問或使用 $ref_id 值.我也試過使用 define() 無濟(jì)于事.我做錯(cuò)了什么?

But the someOtherFunction can't seem to access or use the $ref_id value. I've also tried using define() to no avail. What am I doing wrong?

推薦答案

你也必須在第二個(gè)函數(shù)中定義全局變量..

you have to define the global var in the second function as well..

// global scope
$ref_id = 1;

grabReferral($rid){
   global $ref_id;
   $ref_id = $rid;
}

someOtherFunction(){
    global $ref_id;
    sendValue($ref_id);
}

菲利克斯

這篇關(guān)于在函數(shù)內(nèi)聲明全局變量的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！