[英]Syntax error in PHP: array access of a function's return value
Well the problem is that I wrote a code that's avoiding showing of duplicate data. 问题是我写了一个避免显示重复数据的代码。 On my local machine it works perfectly but on host I am getting a following error:
在我的本地计算机上,它工作正常,但是在主机上,我收到以下错误:
Syntax error, unexpected '[' in /home/eplus/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_product_product.tpl on line 481
语法错误,在第481行的/home/eplus/public_html/vqmod/vqcache/vq2-catalog_view_theme_default_template_product_product.tpl中出现意外的[[]
Here is the code where error occurs 这是发生错误的代码
if ($pr_id[$i] == 0) {
break;
echo 'h1' . "Нет похожих продуктов";
}
if ($pr_id[$i] != array_unique($pr_id)[$i]) { // Error on this line
$product_fee = $this->db->query("SELECT `product_id` FROM `" . DB_PREFIX . "product_to_category` WHERE `category_id`='".$feed_id."' AND NOT `product_id` = '".$products_id."' GROUP BY `product_id` ORDER BY RAND() LIMIT 0,10");
$pr_id[$i] = $product_fee->row['product_id'];
continue;
}
How can I avoid this? 如何避免这种情况? As for CMS I am currently using OpenCart.
至于CMS,我目前正在使用OpenCart。
Array dereferencing is supported only in PHP version 5.4 and above. 数组解引用仅在PHP 5.4及更高版本中受支持。
It is when you use bracket access directly after a function that returns an array: array_unique($array)[0]
. 当您在返回数组的函数之后直接使用方括号访问时:
array_unique($array)[0]
。
Read more: PHP 5.4: New features 阅读更多: PHP 5.4:新功能
I would advise you to create the array with unique items before the if
clause: 我建议您在
if
子句之前创建具有唯一项的数组:
$pr_unique = array_unique($pr_id);
if ($pr_id[$i] != $pr_unique[$i]) {
....
}
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