blocks|key|213690|text|最简单的方法是对对象进行JSON编码，然后将其解码为数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|213691|$array+=+json_decode(json_encode($object),+true);|code-block|syntax|javascript|213692|或者，如果您愿意，也可以手动遍历对象：|213693|foreach+($object+as+$value)+
++++$array[]+=+$value->post_id;|213694|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|$]]

The easiest way is to JSON-encode your object and then decode it back to an array:

<pre><code>$array = json_decode(json_encode($object), true);
</code></pre>

Or if you prefer, you can traverse the object manually, too:

<pre><code>foreach ($object as $value) 
 $array[] = $value-&gt;post_id;
</code></pre>

blocks|key|213897|text|非常简单，首先将您的对象转换为json对象，这将把您的对象的字符串返回到JSON表示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|213898|获取结果并使用额外参数true进行解码，其中它将转换为关联数组|213899|$array+=+json_decode(json_encode($oObject),true);|code-block|syntax|javascript|213900|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Very simple, first turn your object into a json object, this will return a string of your object into a JSON representative.

Take that result and decode with an extra parameter of true, where it will convert to associative array

<pre><code>$array = json_decode(json_encode($oObject),true);
</code></pre>

blocks|key|213585|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|213586|$new_array+=+objectToArray($yourObject);

function+objectToArray($d)+
{
++++if+(is_object($d))+{
++++++++//+Gets+the+properties+of+the+given+object
++++++++//+with+get_object_vars+function
++++++++$d+=+get_object_vars($d);
++++}

++++if+(is_array($d))+{
++++++++/*
++++++++*+Return+array+converted+to+object
++++++++*+Using+__FUNCTION__+(Magic+constant)
++++++++*+for+recursive+call
++++++++*/
++++++++return+array_map(__FUNCTION__,+$d);
++++}+else+{
++++++++//+Return+array
++++++++return+$d;
++++}
}|code-block|syntax|javascript|213587|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|$]]

Try this:

<pre><code>$new_array = objectToArray($yourObject);

function objectToArray($d) 
{
 if (is_object($d)) {
 // Gets the properties of the given object
 // with get_object_vars function
 $d = get_object_vars($d);
 }

 if (is_array($d)) {
 /*
 * Return array converted to object
 * Using __FUNCTION__ (Magic constant)
 * for recursive call
 */
 return array_map(__FUNCTION__, $d);
 } else {
 // Return array
 return $d;
 }
}
</code></pre>

blocks|key|214142|text|您可以将std对象转换为数组，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|214143|$objectToArray+=+(array)$object;|code-block|syntax|javascript|214144|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|$]]

You can convert an std object to array like this:

<pre><code>$objectToArray = (array)$object;
</code></pre>

blocks|key|214009|text|对于一维数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|214010|$array+=+(array)$class;+|code-block|syntax|javascript|214011|对于多维数组：|214012|function+stdToArray($obj){
++$reaged+=+(array)$obj;
++foreach($reaged+as+$key+=>+&$field){
++++if(is_object($field))$field+=+stdToArray($field);
++}
++return+$reaged;
}|214013|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|$]]

For one-dimensional arrays: 

<pre><code>$array = (array)$class; 
</code></pre>

For multi-dimensional array: 

<pre><code>function stdToArray($obj){
 $reaged = (array)$obj;
 foreach($reaged as $key =&gt; &amp;$field){
 if(is_object($field))$field = stdToArray($field);
 }
 return $reaged;
}
</code></pre>

blocks|key|214251|text|有两种简单的方法可以将stdClass对象转换为数组|type|unstyled|depth|inlineStyleRanges|entityRanges|data|214252|$array+=+get_object_vars($obj);|code-block|syntax|javascript|214253|和其他的是|214254|$array+=+json_decode(json_encode($obj),+true);|214255|或者您可以简单地使用foreach循环创建数组|214256|$array+=+array();
foreach($obj+as+$key){
++++$array[]+=+$key;
}
print_r($array);|214257|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

There are two simple ways to convert stdClass Object to an Array
<pre><code>$array = get_object_vars($obj);
</code></pre>
and other is
<pre><code>$array = json_decode(json_encode($obj), true);
</code></pre>
or you can simply create array using foreach loop
<pre><code>$array = array();
foreach($obj as $key){
 $array[] = $key;
}
print_r($array);
</code></pre>

blocks|key|213799|text|$wpdb->get_results("SELECT+...",+ARRAY_A);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|213800|ARRAY_A是一个"output_type“参数。它可以是四个预定义常量之一(默认为OBJECT)：|unstyled|213801|OBJECT+-+result+will+be+output+as+a+numerically+indexed+array+of+row+objects.
OBJECT_K+-+result+will+be+output+as+an+associative+array+of+row+objects,+using+first+columns+values+as+keys+(duplicates+will+be+discarded).
ARRAY_A+-+result+will+be+output+as+an+numerically+indexed+array+of+associative+arrays,+using+column+names+as+keys.
ARRAY_N+-+result+will+be+output+as+a+numerically+indexed+array+of+numerically+indexed+arrays.++|213802|请参阅：http://codex.wordpress.org/Class_Reference/wpdb|offset|length|213803|entityMap|0|LINK|mutability|MUTABLE|url|http://codex.wordpress.org/Class_Reference/wpdb^0|0|0|0|4|1B|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|V|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|F|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

<pre><code>$wpdb-&gt;get_results("SELECT ...", ARRAY_A);
</code></pre>

ARRAY_A is a "output_type" argument. It can be one of four pre-defined constants (defaults to OBJECT):

<pre><code>OBJECT - result will be output as a numerically indexed array of row objects.
OBJECT_K - result will be output as an associative array of row objects, using first columns values as keys (duplicates will be discarded).
ARRAY_A - result will be output as an numerically indexed array of associative arrays, using column names as keys.
ARRAY_N - result will be output as a numerically indexed array of numerically indexed arrays. 
</code></pre>

See: <a href="http://codex.wordpress.org/Class_Reference/wpdb" rel="noreferrer">http://codex.wordpress.org/Class_Reference/wpdb</a>

blocks|key|213711|text|您可以尝试这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|213712|$aInitialArray+=+array_map(function($oObject){
++++$aConverted+=+get_object_vars($oObject);
++++return+$aConverted['post_id'];
},+$aInitialArray);|code-block|syntax|javascript|213713|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|$]]

You can try this:

<pre><code>$aInitialArray = array_map(function($oObject){
 $aConverted = get_object_vars($oObject);
 return $aConverted['post_id'];
}, $aInitialArray);
</code></pre>

blocks|key|214095|text|如果你有一个数组，并且数组元素是stdClass+item，那么解决方案是：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|214096|foreach($post_id+as+$key=>$item){
++++$post_id[$key]+=+(array)$item;
}|code-block|syntax|javascript|214097|现在，stdClass已替换为数组中的一个数组作为新的数组元素|214098|entityMap^0|G|8|0|0|3|8|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

if you have an array and array element is <code>stdClass</code> item then this is the solution:

<pre><code>foreach($post_id as $key=&gt;$item){
 $post_id[$key] = (array)$item;
}
</code></pre>

now the <code>stdClass</code> has been replaced with an array inside the array as new array element

I fetch post_id from postmeta as:

<pre><code>$post_id = $wpdb-&gt;get_results("SELECT post_id FROM $wpdb-&gt;postmeta WHERE (meta_key = 'mfn-post-link1' AND meta_value = '". $from ."')");
</code></pre>

when i try <code>print_r($post_id);</code>
I have array like this:

<pre><code>Array
(
 [0] =&gt; stdClass Object
 (
 [post_id] =&gt; 140
 )

 [1] =&gt; stdClass Object
 (
 [post_id] =&gt; 141
 )

 [2] =&gt; stdClass Object
 (
 [post_id] =&gt; 142
 )

)
</code></pre>

and i dont know how to traverse it, and how could I get array like this

<pre><code>Array
(
 [0] =&gt; 140


 [1] =&gt; 141


 [2] =&gt; 142

)
</code></pre>

Any idea how can I do this?

Convert stdClass object to array in PHP

JSON

我从postmeta中获取post_id为：$post_id = $wpdb->get_results("SELECT post_id FROM $wpdb->postmeta WHERE (meta_key = 'mfn-post-link1' AND meta_value = '". $from ."')");当我尝试print_r($post_id);时，我得到的数组如下：Array(   

问将stdClass对象转换为数组
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