blocks|key|790249|text|如果这仅仅是为了调试输出，您也可以使用下面的代码来查看所有的类型和值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|790250|var_dump($obj);|code-block|syntax|javascript|790251|如果您想更好地控制输出，可以使用以下命令：|790252|foreach+($obj+as+$key+=>+$value)+{
++++echo+"$key+=>+$value\n";
}|790253|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If this is just for debugging output, you can use the following to see all the types and values as well.

<pre><code>var_dump($obj);
</code></pre>

If you want more control over the output you can use this:

<pre><code>foreach ($obj as $key =&gt; $value) {
 echo "$key =&gt; $value\n";
}
</code></pre>

blocks|key|790340|text|这是表达对象属性的另一种方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|790341|foreach+($obj+as+$key=>$value)+{
++++echo+"$key+=>+$obj[$key]\n";
}|code-block|syntax|javascript|790342|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is another way to express the object property.

<pre><code>foreach ($obj as $key=&gt;$value) {
 echo "$key =&gt; $obj[$key]\n";
}
</code></pre>

blocks|key|1004525|text|出于测试目的，我使用以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1004526|//return+assoc+array+when+called+from+outside+the+class+it+will+only+contain+public+properties+and+values+
var_dump(get_object_vars($obj));+|code-block|syntax|javascript|1004527|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For testing purposes I use the following:

<pre><code>//return assoc array when called from outside the class it will only contain public properties and values 
var_dump(get_object_vars($obj)); 
</code></pre>

blocks|key|1004549|text|有时，您需要列出对象的变量，而不是出于调试目的。正确的方法是使用get_object_vars($object)。它返回一个包含所有类变量及其值的数组。然后，您可以在foreach循环中遍历它们。如果在对象本身中使用，只需执行get_object_vars($this)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1004550|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Sometimes, you need to list the variables of an object and not for debugging purposes. The right way to do it is using get_object_vars($object). It returns an array that has all the class variables and their value. You can then loop through them in a foreach loop. If used within the object itself, simply do get_object_vars($this)

blocks|key|1004616|text|在通过foreach循环运行$object之前，必须将其转换为数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1004617|$array+=+(array)+$object;++

+foreach($array+as+$key=>$val){
++++++echo+"$key:+$val";
++++++echo+" ";
+}|code-block|syntax|javascript|1004618|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Before you run the $object through a foreach loop you have to convert it to an array:
<pre><code>$array = (array) $object; 

 foreach($array as $key=&gt;$val){
 echo &quot;$key: $val&quot;;
 echo &quot;&lt;br&gt;&quot;;
 }
</code></pre>

blocks|key|1004699|text|只要:+a)您只需要访问公共属性，或者b)您正在使用stdClass对象，那么David的答案是可靠的。如果您已经在类中定义了私有或受保护的属性，并且想要显示所有属性，只需添加一个迭代属性的实例方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1004700|class+MyClass+{

++public+$public_attr1;
++private+$private_attr2;
++protected+$protected_attr3;

++function+iterateAttributes()+{
++++foreach+($this+as+$attr=>$value)+{
++++++echo+"$attr:+$value+ ";
++++}
++}

}|code-block|syntax|javascript|1004701|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

David's answer is solid as long as either: a) you only need access to public attributes, or b) you are working with the stdClass object. If you have defined private or protected attributes in a class and want to display all attributes, simply add an instance method that iterates the properties:
<pre><code>class MyClass {

 public $public_attr1;
 private $private_attr2;
 protected $protected_attr3;

 function iterateAttributes() {
 foreach ($this as $attr=&gt;$value) {
 echo &quot;$attr: $value &lt;br/&gt;&quot;;
 }
 }

}
</code></pre>

How can I loop through all the properties of object?. Right now I have to write a new code line to print each property of object

<pre><code>echo $obj-&gt;name;
echo $obj-&gt;age;
</code></pre>

Can I loop through all the properties of an object using foreach loop or any loop?

Something like this

<pre><code>foreach ($obj as $property =&gt; $value) 
</code></pre>

Looping through all the properties of object php

如何遍历object的所有属性？现在我必须写一个新的代码行来打印object的每个属性echo $obj->name;echo $obj->age;我可以使用foreach循环或任何循环遍历对象的所有属性吗？像这样的东西foreach ($obj as $property => $value)  

问遍历对象php的所有属性
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问遍历对象php的所有属性EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问遍历对象php的所有属性
EN