如何在PHP中对数组进行foreach？

Question

当我print_r（$ a）;输出如下：

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 
       ) 

     ) 

) 

数组键可能会增加。现在，我想输出数组的所有name'的值。 当我使用下面的代码。它显示我一个错误。

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

Answer 1

这样做：

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

然后通过阅读：http://php.net/manual/en/control-structures.foreach.php

这样做：

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

会打印出数组中的每个值的键的名称。

Answer 2

使用 - >是用于对象; =>是阵列

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

Answer 3

该数组包含多个对象，但foreach回路将工作完全相同的方式作为用于正常变量相同。正确的语法是

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

Answer 4

试试这个：

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

Answer 5

典型foreach语法使用key => value对。

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

Answer 6

这就是答案：

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