如何使用php从stdclass对象提取数据_Php_Arrays_Json

如何使用php从stdclass对象提取数据

php arrays json

如何使用php从stdclass对象提取数据,php,arrays,json,Php,Arrays,Json,我有一个stdclass对象，我想从该对象中提取img数据，但我已经像下面这样做了，但它不起作用下面是我的代码 foreach ($values->design->front as $front => $frontdata){ $front_data = str_replace("'", '"',$frontdata); $front_values = json_decode($front_data); // //e

我有一个stdclass对象，我想从该对象中提取img数据，但我已经像下面这样做了，但它不起作用

下面是我的代码

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;
          }
        }

从上面的阵列中，我只想提取img数据，即图像，我如何解决这个问题，请帮助我

$values->design->front包含以下数组

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


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

    }
}

如果您的$frontdata数组是

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'];
      }
   }
}

试试这个，

$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);

我更喜欢在

JSON\u decode

之后使用JSON，就像使用数组一样。对于它，添加第二个参数

true

，即

json\u decode（$front\u data，true）

试试这个：

foreach（$values->design->front as$front=>$frontdata）{
$front_data=str_replace（“'”、“'”、$frontdata）；
$front\u values=json\u decode（$front\u data，true）；
////echo$front_值[1]['id']；
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'}}
)

//echo”“；print_r（$front_值）；
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
)

////echo$front_data[1]['img']；
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'}}
)

foreach（$front_值为$val）{
//回音“；打印（$val）；
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'}}
)

如果（isset（$val['img']））{
echo$val['img']；
}
}
}

您可以尝试在对象上使用

json\u decode

和

json\u encode

，如本例所示：

你能提供

$front\u data

中包含的内容吗？你是如何得到这个数组的？在开始循环之前，使用

json\u decode

并显示结果。你可以向我们显示

echo”“；print\r（$values->design->front）；

的确切输出吗？在第一个

foreach（）之前添加它

并将输出粘贴到question@Timur$front_数据包含=>“{”0:{”id:“区域设计”}，“1:{”id:“images-1”，“width:“500px”，“height:“500px”，“top:“0px”，“left:“0px”，“zIndex:“auto”，“img:”}“@alive to die down是输出，数组（[0]=>{0'：{id'：“区域设计”}，'1'：{'id'：'images-1'，'width'：'500px'，'height'：'500px'，'top'：'0px'，'left'：'0px'，'zIndex'：'auto'，'img'：''}它显示为foreach提供的参数无效。它显示无法将stdclass的对象转换为arrayDid。您将

true

添加到

json\u解码（$front\u data，true）

？