Question

我有一个stdclass对象，我想从这些对象中提取img数据，但是我已经完成了以下操作，但它没有工作。

以下是我的代码，

foreach ($values->design->front as $front => $frontdata){
          $front_data = str_replace("'", '"',$frontdata);
          $front_values = json_decode($front_data);
          // //echo $front_values[1]['id'];
          // echo "<pre>";print_r($front_values);
          // //echo $front_data[1]['img'];
          foreach($front_values as $val){
            //echo "<pre>";print_r($val);
           echo $val->img;
          }
        }

我的结果数组，

stdClass Object
(
    [id] => area-design
)
stdClass Object
(
    [id] => images-1
    [width] => 500px
    [height] => 500px
    [top] => 0px
    [left] => 0px
    [zIndex] => auto
    [img] => http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-f127a3f7144332566936559141210548143.png
)
stdClass Object
(
    [id] => area-design
)
stdClass Object
(
    [id] => images-1
    [width] => 500px
    [height] => 500px
    [top] => 0px
    [left] => 0px
    [zIndex] => auto
    [img] => http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-f127a3f7144332566936559141210548143.png
)
stdClass Object
(
    [id] => area-design
)
stdClass Object
(
    [id] => images-1
    [width] => 500px
    [height] => 500px
    [top] => 0px
    [left] => 0px
    [zIndex] => auto
    [img] => http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-464d828b14433256696212312871108713.png
)
stdClass Object
(
    [id] => area-design
)
stdClass Object
(
    [id] => images-1
    [width] => 500px
    [height] => 500px
    [top] => 0px
    [left] => 0px
    [zIndex] => auto
    [img] => http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-ee23e7ad144332566992049430410306091.png
)

从上面的数组我想只提取img数据，图像如何解决这个问题，请帮助我。

$ values-＆gt; design-＆gt; front包含在数组下面，

Array
(
    [0] => {'0':{'id':'area-design'},'1':{'id':'images-1','width':'500px','height':'500px','top':'0px','left':'0px','zIndex':'auto','img':'http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-f127a3f7144332566936559141210548143.png'}}
)
Array
(
    [0] => {'0':{'id':'area-design'},'1':{'id':'images-1','width':'500px','height':'500px','top':'0px','left':'0px','zIndex':'auto','img':'http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-f127a3f7144332566936559141210548143.png'}}
    [1] => {'0':{'id':'area-design'},'1':{'id':'images-1','width':'500px','height':'500px','top':'0px','left':'0px','zIndex':'auto','img':'http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-464d828b14433256696212312871108713.png'}}
    [2] => {'0':{'id':'area-design'},'1':{'id':'images-1','width':'500px','height':'500px','top':'0px','left':'0px','zIndex':'auto','img':'http://192.168.1.156/dutees/tshirtecommerce//uploaded/products/dg-designer-ee23e7ad144332566992049430410306091.png'}}
)

Answer 1

如果你的$ frontdata数组是

Array ( [0] => {'0':{'id':'area-design'},'1':{'id':'images-1','width':'500p‌x','height':'500px',‌'top':'0px','left':'‌0px','zIndex':'auto'‌,'img':'192.168.1.15‌6/dutees/tshirtecomm‌erce//uploaded/produ‌cts/…;}} )

试试这个，

foreach ($values->design->front as $front => $frontdata){
    foreach($front_data as $val){


               echo $val[1]['img'];

    }
}

Answer 2

我更喜欢在json_decode之后使用JSON。为此添加第二个参数true，即json_decode($front_data, true) 试试这个：

foreach ($values->design->front as $front => $frontdata){
    $front_data = str_replace("'", '"',$frontdata);
    $front_values = json_decode($front_data, true);
    // //echo $front_values[1]['id'];
    // echo "<pre>";print_r($front_values);
    // //echo $front_data[1]['img'];
   foreach($front_values as $val){
      //echo "<pre>";print_r($val);
      if(isset($val['img'])) {
          echo $val['img'];
      }
   }
}

Answer 3

您可以尝试在对象上使用json_decode和json_encode，如下例所示：https://eval.in/803391

$result =[];
//first encode and then decode, to not get any errors 
$array = json_decode(json_encode($frontdata), true);
var_dump( $array );
foreach($array as $val){
  if(isset($val['img'])){
      //save into a result array
      $result[]=$val['img'];
  }
}
var_dump($result);

如何使用php从stdclass对象中提取数据

3 个答案: