在数组键中分配变量

Question

我正在开发 prestashop 模块，它将使用 cURL 将额外数据发送到 Google Analytics。我对如何将迭代计数变量分配给数组键感到困惑。

例如：

'prXnm' => $order_detail['product_name'],
    'prXid' => $order_detail['product_id'],
    'prXpr' => $order_detail['product_price'],

其中 X 是一个数字，应该做类似的事情 count($order_detail['product_name']);

如何将 X 实现到数组中？因为 'prcount($order_detail['product_name'])nm' => $order_detail['product_name'], 不工作

Answer 1

尝试像这样连接：

$x = count($order_detail['product_name']);
$result = array(
  "pr${x}nm" => $order_detail['product_name'],
  "pr${x}id" => $order_detail['product_id'],
  "pr${x}pr" => $order_detail['product_price'],
);

Notes:

As already Nick pointed out, including count into a key name doesn't make much sense, but I guess you just wanted to provide a sample ;-)

The double-quote in PHP is specially helpful for concatenating, but the single-quote should be used to improve performance (PHP does not search or handle dollar-signs in single quotes).

Answer 2

你可以对数组键使用双引号，然后使用 curly braces syntax

注入变量

<?php

$i = count($order_detail['product_name']);

$arr = [
    "pr${i}nm" => $order_detail['product_name'],
    "pr${i}id" => $order_detail['product_id'],
    "pr${i}pr" => $order_detail['product_price'],
];

Answer 3

$number = 3;
$array1 = array("test$number" => "Sample");
$array2 = array("test".$number => "Sample");

print_r($array1); //Array ( [test3] => Sample )
print_r($array2); //Array ( [test3] => Sample )

你应该学习PHP基础。

在数组键中分配变量

Assign variable in array key

php

arrays

prestashop