OpenCart:如何创建全局变量? [英] OpenCart: How to make a global variable?

问题描述

我正在尝试在OpenCart中创建两个全局变量.我基本上希望能够在我的任何.tpl文件中声明它们

I am trying to make two global variables within OpenCart. I basically want to be able to declare them in any of my .tpl files

<?php echo $global1; ?>

我尝试通过在文件内添加$global1="test"来编辑library/system.php以及config.php.但是在.tpl文件中调用它不起作用吗?

I have tried editing, library/system.php and also config.php by adding $global1="test" inside my files. However calling that in .tpl files is not working?

例如，看下面的文件，我希望能够随时调用这些变量.我必须编辑config.php还是什么?该示例显示了在每个.tpl文件中使用的$header调用.

Example, look at the file below, I want to be able to call these variables anytime.. do I have to edit config.php or what?? The example shows the $header call which is used on every .tpl file.

not_found.tpl

<?=$header?>
<div class="breadcrumb">
<? foreach ($breadcrumbs as $breadcrumb) { ?>
    <? $breadcrumb['separator']; ?><a href="<?=$breadcrumb['href']?>"><?=$breadcrumb['text']?></a>
<? } ?>
</div>
<div id="content">
    <?=$global1?>
    <img src="/catalog/view/theme/default/image/error.png"/>
</div>
<?=$footer?>

已更新

/catalog/controller/common/header.php

<?php   
class ControllerCommonHeader extends Controller {


    protected function index() {

        // NEW GLOBAL VARS
        $cdnDefault="//www.gorgeouscouturedev.com/catalog/view/theme/";
        $currentUseLang = $this->language->get('code'); 

现在位于/catalog/view/theme/default/template/common/home.tpl

<?=$header?>
<?=$column_left?>
<?=$column_right?>
<div id="content">

<? echo $cdnDefault ?>
<? echo $currentUseLang ?>

    <?=$content_top?>
        <div class="flexslider">
            <ul class="slides">
                <li><img src="catalog/view/theme/default/image/desktop.png"/></li>
                <li><img src="catalog/view/theme/default/image/blogger.png"/></li>
            </ul>
        </div>
    <?=$content_bottom?>
</div>
<?=$footer?>

错误:

 Notice: Undefined variable: cdnDefault in /catalog/view/theme/default/template/common/home.tpl on line 6
 Notice: Undefined variable: currentUseLang in /catalog/view/theme/default/template/common/home.tpl on line 7 

推荐答案

您可以使用$GLOBALS超级全局数组

you can use $GLOBALS super global array

例如，首先在controller/common/header.php

$GLOBALS["1"] = "test";

然后在任何tpl文件中使用它

then use it in any tpl file like

<?php echo $GLOBALS["1"]; ?>

关于header的事情，实际上在这样的每个控制器文件(对应于每个tpl文件)中声明了header和five other files

regarding that header thing, that header and five other files are actually declared in every controller file (corresponding to every tpl file ) like this

$this->children = array(
            'common/column_left',
            'common/column_right',
            'common/content_top',
            'common/content_bottom',
            'common/footer',
            'common/header'     
        );

回答更新的问题

/catalog/controller/common/header.php

<?php   
class ControllerCommonHeader extends Controller {


    protected function index() {

        // NEW GLOBAL VARS
     $GLOBALS["cdnDefault"]="//www.gorgeouscouturedev.com/catalog/view/theme/";
     $GLOBALS["currentUseLang"] = $this->language->get('code');

现在位于/catalog/view/theme/default/template/common/home.tpl

<?=$header?>
<?=$column_left?>
<?=$column_right?>
<div id="content">

<? echo $GLOBALS["cdnDefault"]; ?>
<? echo $GLOBALS["currentUseLang"]; ?>

    <?=$content_top?>
        <div class="flexslider">
            <ul class="slides">
                <li><img src="catalog/view/theme/default/image/desktop.png"/></li>
                <li><img src="catalog/view/theme/default/image/blogger.png"/></li>
            </ul>
        </div>
    <?=$content_bottom?>
</div>
<?=$footer?>

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