Question

PHP通过JSON格式的AJAX接收它（让我们称之为$json_string）：

[{"pid":"284","qty":"1","sn":"12"},{"pid":"284","qty":"1","sn":"23"},{"pid":"276","qty":"1","sn":"34"},{"pid":"276","qty":"1","sn":"45"},{"pid":"276","qty":"1","sn":"56"},{"pid":"281","qty":"1","sn":"57"},{"pid":"281","qty":"1","sn":"67"},{"pid":"281","qty":"1","sn":"78"}]

我希望遍历数组，如下所示：

$out = '<table>';
$arr = json_decode($json_string);
foreach ($arr AS $row){
    $out .= '<tr><td>'.$row['pid'].'</td><td>'.$row['qty'].'</td><td>'.$row['sn'].'</td></tr>';
}
$out .= '</table>';

我收到错误：Fatal error: Cannot use object of type stdClass as array

Answer 1

您需要强制它使用关联数组：

$arr = json_decode($json_string, true);

或者修改代码以对对象使用对象表示法：

foreach ($arr AS $row){
    $out .= '<tr><td>'.$row->pid.'</td><td>'.$row->qty.'</td><td>'.$row->sn.'</td></tr>';
}

我个人更喜欢将它全部强制转换为关联数组，因为它更容易使用，特别是当你进入复杂的嵌套结构时。

PHP循环对象数组（JSON）

1 个答案: