PHP JSON 多维数组语法 - php json multidimensional array syntax

php json multidimensional array syntax

本文关键字：数组语法 JSON PHP | 更新日期: 2023-09-27

我在PHP中创建的JSON有问题; 我从 sql 查询在while循环中创建数组。 $featuresCSV是一个逗号分隔的字符串，如 "1,3,4" . 在 JSON 中，我需要它像feature-1: 1,feature-2: 1,feature-3: 1一样结束 1 表示我的前端程序中复选框的true。

while ($stmt2->fetch()) {
  $features = array();
  $featuresTmp = explode(',', $featuresCSV, -1);
  foreach ($featuresTmp as &$featureItem) {
    $features[] = array("feature-" . $featureItem => 1);
  }
  $items[] = array('price' => $price, 'image' => $image, 'features' => $features);
}
...
json_encode($output);

JSON 最终看起来像这样：

{"price":8900,
"image":"4d3f22fe-9f1a-4a7e-a564-993c821b2279.jpg",
"features":[{"feature-1":1},{"feature-2":1}]}

但我需要它看起来像这样：

{"price":8900,
"image":"4d3f22fe-9f1a-4a7e-a564-993c821b2279.jpg",
"features":[{"feature-1":1,"feature-2":1}]}

请注意，feature-1 和 feature-2 在第二个中没有用括号分隔。

您需要

在"功能-1"和"功能-2"处分配元素。

foreach ($featuresTmp as &$featureItem) {
   $features["feature-" . $featureItem] = 1;
}

语法$feature[] = ...用于追加到数组的末尾。

你去吧

while ($stmt2->fetch()) {
$features = array();
$featuresTmp = explode(',', $featuresCSV, -1);

foreach ($featuresTmp as &$featureItem) {
$features["feature-$featureItem"] = 1;
}
$items[] = array('price' => $price, 'image' => $image, 'features' => $features);
}
...
json_encode($output);