如何在PHP中對數組進行foreach？

Question

當我print_r（$ a）;輸出如下：

Array 
(
    [0] => stdClass Object 
     (
      [tid] => 3 
      [vid] => 1 
      [name] => cPanel 
      [description] => 
      [format] => 
      [weight] => 0 
      [depth] => 0 
      [parents] => Array 
       (
        [0] => 0 
       ) 

     ) 

    [1] => stdClass Object 
     (
      [tid] => 4 
      [vid] => 1 
      [name] => whm 
      [description] => 
      [format] => 
      [weight] => 0 
      [depth] => 0 
      [parents] => Array 
       (
        [0] => 0 
       ) 

     ) 

    [2] => stdClass Object 
     (
      [tid] => 5 
      [vid] => 1 
      [name] => test 
      [description] => 
      [format] => 
      [weight] => 0 
      [depth] => 0 
      [parents] => Array 
       (
        [0] => 0 
       ) 

     ) 

) 

數組鍵可能會增加。現在，我想輸出數組的所有name'的值。 當我使用下面的代碼。它顯示我一個錯誤。

foreach($a as $a->name){ 
    echo a->name; 
} 

Answer 1

這樣做：

foreach($a as $object){ 
    echo $object->name; 
} 

然後通過閱讀：http://php.net/manual/en/control-structures.foreach.php

這樣做：

foreach ($array as $key => $value) { 
    echo "Array key: $key Value: $value"; 
} 

會打印出數組中的每個值的鍵的名稱。

Answer 2

使用 - >是用於對象; =>是陣列

foreach($a as $key => $value){ 
    echo $key . " " . $value; 
} 

Answer 3

該數組包含多個對象，但foreach迴路將工作完全相同的方式作爲用於正常變量相同。正確的語法是

foreach ($a as $object) 
echo $object->name; 

Answer 4

試試這個：

foreach($a as $value){ 
    echo $value->name; 
} 

Answer 5

典型foreach語法使用key => value對。

foreach ($a as $key => $value) 
{ 
var_dump($value); 
} 

Answer 6

這就是答案：

foreach($a as $value) 
echo $value['name'];