Question

我有一个数组作为查询结果，并且该数组内部有一个关联数组。我需要选择有价值的产品，即我需要从该结果中获得["176","143","60"]。请帮我得到这个。

stdClass Object ( 
    [num_rows] => 1 
    [row] => Array ( 
        [setting] => {"name":"featured","product_name":"","product":["176","143","60"],"limit":"10","width":"200","height":"200","status":"1"} 
    ) 
    [rows] => Array ( 
        [0] => Array ( 
            [setting] => {"name":"featured","product_name":"","product":["176","143","60"],"limit":"10","width":"200",
"height":"200","status":"1"} 
        ) 
    ) 
)

Answer 1

结果不会得到数组。您得到stdClass这是一个对象。您必须访问其属性。而且该属性是一个数组，其中包含一个元素，该元素是json编码的字符串，因此您必须先对其进行解码，然后再访问您感兴趣的数组键。另外，您也没有指定感兴趣的产品数据（从row或rows属性？可以有更多行吗？）。

https://www.php.net/manual/en/language.types.object.php

https://www.php.net/manual/en/function.json-decode.php

<?php

$data = new stdClass();
$data->num_rows = 1;
$data->row = [
  'setting' => '{"name":"featured","product_name":"","product":["176","143","60"],"limit":"10","width":"200","height":"200","status":"1"}',
];
$data->rows = [
  0 => [
    'setting' => '{"name":"featured","product_name":"","product":["176","143","60"],"limit":"10","width":"200","height":"200","status":"1"}'
  ]
];

// get product array from row
var_dump(json_decode($data->row['setting'])->product);

// get product array from first row of rows
var_dump(json_decode($data->rows[0]['setting'])->product);

// get product array from all rows
array_map(function(array $row) {
  var_dump(json_decode($row['setting'])->product);
}, $data->rows);

所有3个转储均导致：

array(3) {
  [0]=>
  string(3) "176"
  [1]=>
  string(3) "143"
  [2]=>
  string(2) "60"
}

需要将数组值放入数组中

1 个答案: