将PHP对象转换为关联数组

时间:2010-12-03 12:34:17

标签: php arrays

我正在将API集成到我的网站,该网站使用存储在对象中的数据,而我的代码是使用数组编写的。

我想要一个快速而又脏的函数将对象转换为数组。

32 个答案:

答案 0 :(得分:1246)

只是强调它

$array =  (array) $yourObject;

来自http://www.php.net/manual/en/language.types.array.php

  

如果将对象转换为数组,则结果是一个数组,其元素是对象的属性。键是成员变量名,有一些值得注意的例外:整数属性是不可访问的;私有变量的类名前置于变量名;受保护的变量在变量名前面加上'*'。这些前置值在任一侧都有空字节。

示例:简单对象

$object = new StdClass;
$object->foo = 1;
$object->bar = 2;

var_dump( (array) $object );

输出:

array(2) {
  'foo' => int(1)
  'bar' => int(2)
} 

示例:复杂对象

class Foo
{
    private $foo;
    protected $bar;
    public $baz;

    public function __construct()
    {
        $this->foo = 1;
        $this->bar = 2;
        $this->baz = new StdClass;
    }
}

var_dump( (array) new Foo );

输出(为清晰起见编辑了\ 0s):

array(3) {
  '\0Foo\0foo' => int(1)
  '\0*\0bar' => int(2)
  'baz' => class stdClass#2 (0) {}
}

使用var_export代替var_dump输出

array (
  '' . "\0" . 'Foo' . "\0" . 'foo' => 1,
  '' . "\0" . '*' . "\0" . 'bar' => 2,
  'baz' => 
  stdClass::__set_state(array(
  )),
)

以这种方式进行类型转换不会对对象图进行深度转换,您需要应用空字节(如手册中所述)来访问任何非公共属性。因此,在仅使用公共属性转换StdClass对象或对象时,这种方法效果最佳。为了快速和肮脏(你要求的),没关系。

另见这篇深入的博客文章:

答案 1 :(得分:294)

您可以依靠JSON编码/解码函数的行为快速将深层嵌套对象转换为关联数组:

$array = json_decode(json_encode($nested_object), true);

答案 2 :(得分:63)

从第一次Google搜索“ php对象到关联数组”,我们有了这个:

function object_to_array($data)
{
    if (is_array($data) || is_object($data))
    {
        $result = array();
        foreach ($data as $key => $value)
        {
            $result[$key] = object_to_array($value);
        }
        return $result;
    }
    return $data;
}

来自codesnippets.joyent.com

答案 3 :(得分:51)

如果你的对象属性是公开的,你可以这样做:

$array =  (array) $object;

如果它们是私有的或受保护的,它们将在阵列上具有奇怪的键名。因此,在这种情况下,您将需要以下功能:

function dismount($object) {
    $reflectionClass = new ReflectionClass(get_class($object));
    $array = array();
    foreach ($reflectionClass->getProperties() as $property) {
        $property->setAccessible(true);
        $array[$property->getName()] = $property->getValue($object);
        $property->setAccessible(false);
    }
    return $array;
}

答案 4 :(得分:12)

class Test{
    const A = 1;
    public $b = 'two';
    private $c = test::A;

    public function __toArray(){
        return call_user_func('get_object_vars', $this);
    }
}

$my_test = new Test();
var_dump((array)$my_test);
var_dump($my_test->__toArray());

<强>输出

array(2) {
    ["b"]=>
    string(3) "two"
    ["Testc"]=>
    int(1)
}
array(1) {
    ["b"]=>
    string(3) "two"
}

答案 5 :(得分:10)

此处发布的所有其他答案仅适用于公共属性。这是一个使用反射和getter的 javabean 类对象的解决方案:

function entity2array($entity, $recursionDepth = 2) {
    $result = array();
    $class = new ReflectionClass(get_class($entity));
    foreach ($class->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
        $methodName = $method->name;
        if (strpos($methodName, "get") === 0 && strlen($methodName) > 3) {
            $propertyName = lcfirst(substr($methodName, 3));
            $value = $method->invoke($entity);

            if (is_object($value)) {
                if ($recursionDepth > 0) {
                    $result[$propertyName] = $this->entity2array($value, $recursionDepth - 1);
                } else {
                    $result[$propertyName] = "***";     //stop recursion
                }
            } else {
                $result[$propertyName] = $value;
            }
        }
    }
    return $result;
}

答案 6 :(得分:9)

以下是一些代码:

function object_to_array($data) {
    if ((! is_array($data)) and (! is_object($data))) return 'xxx'; //$data;
    $result = array();

    $data = (array) $data;
    foreach ($data as $key => $value) {
        if (is_object($value)) $value = (array) $value;
        if (is_array($value)) 
        $result[$key] = object_to_array($value);
        else
            $result[$key] = $value;
    }

    return $result;
}

答案 7 :(得分:8)

get_object_vars($obj)怎么样?如果您只想访问对象的公共属性,似乎很有用。 http://www.php.net/function.get-object-vars

答案 8 :(得分:6)

键入将对象转换为数组。

$arr =  (array) $Obj;

它将解决您的问题。

答案 9 :(得分:6)

您可以轻松使用此功能获得结果。

function objetToArray($adminBar){
      $reflector = new ReflectionObject($adminBar);
      $nodes = $reflector->getProperties();
      $out=[];
      foreach ($nodes as  $node) {
          $nod=$reflector->getProperty($node->getName());
          $nod->setAccessible(true);
          $out[$node->getName()]=$nod->getValue($adminBar);
      }
      return $out;
  }

使用&gt; = php5

答案 10 :(得分:5)

将对象转换为数组只需显式转换

$name_of_array =  (array) $name_of_object;

答案 11 :(得分:5)

您还可以在PHP中创建函数来转换对象数组。

function object_to_array($object) {
    return (array) $object;
}

答案 12 :(得分:5)

您好,

这是我将PHP对象转换为关联数组的递归PHP函数

// --------------------------------------------------------- 
// ----- object_to_array_recusive --- function (PHP) ------- 
// --------------------------------------------------------- 
// --- arg1: -- $object  =  PHP Object         - required --- 
// --- arg2: -- $assoc   =  TRUE or FALSE      - optional --- 
// --- arg3: -- $empty   =  '' (Empty String)  - optional ---
// --------------------------------------------------------- 
// ----- return: Array from Object --- (associative) ------- 
// --------------------------------------------------------- 

function object_to_array_recusive ( $object, $assoc=TRUE, $empty='' ) 
{ 

    $res_arr = array(); 

    if (!empty($object)) { 

        $arrObj = is_object($object) ? get_object_vars($object) : $object;

        $i=0; 
        foreach ($arrObj as $key => $val) { 
            $akey = ($assoc !== FALSE) ? $key : $i; 
            if (is_array($val) || is_object($val)) { 
                $res_arr[$akey] = (empty($val)) ? $empty : object_to_array_recusive($val); 
            } 
            else { 
                $res_arr[$akey] = (empty($val)) ? $empty : (string)$val; 
            } 

        $i++; 
        }

    } 

    return $res_arr;
}


// --------------------------------------------------------- 
// --------------------------------------------------------- 

用法示例:

// ---- return associative array from object, ... use: 
$new_arr1 = object_to_array_recusive($my_object); 
// -- or -- 
// $new_arr1 = object_to_array_recusive($my_object,TRUE); 
// -- or -- 
// $new_arr1 = object_to_array_recusive($my_object,1); 


// ---- return numeric array from object, ... use: 
$new_arr2 = object_to_array_recusive($my_object,FALSE); 

答案 13 :(得分:4)

将stdClass转换为数组的自定义函数:

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;
    }
}

另一个将Array转换为stdClass的自定义函数:

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

用法示例:

    // Create new stdClass Object
$init = new stdClass;

// Add some test data
$init->foo = "Test data";
$init->bar = new stdClass;
$init->bar->baaz = "Testing";
$init->bar->fooz = new stdClass;
$init->bar->fooz->baz = "Testing again";
$init->foox = "Just test";

// Convert array to object and then object back to array
$array = objectToArray($init);
$object = arrayToObject($array);

// Print objects and array
print_r($init);
echo "\n";
print_r($array);
echo "\n";
print_r($object);

答案 14 :(得分:4)

首先,如果你需要一个来自对象的数组,你可能应该首先将数据构成数组。想一想。

不要使用foreach语句或JSON转换。如果您正在计划这个,那么您再次使用数据结构,而不是使用对象。

如果您确实需要它,请使用面向对象的方法来获得干净且可维护的代码。例如:

对象为数组

class PersonArray implements \ArrayAccess, \IteratorAggregate
{
    public function __construct(Person $person) {
        $this->person = $person;
    }
    // ...
 }

如果您需要所有属性,请使用传输对象

class PersonTransferObject
{
    private $person;

    public function __construct(Person $person) {
        $this->person = $person;
    }

    public function toArray() {
        return [
            // 'name' => $this->person->getName();
        ];
    }

 }

答案 15 :(得分:3)

转换和删除讨厌的星星:

$array = (array) $object;
foreach($array as $key => $val)
{
   $new_array[str_replace('*_','',$key)] = $val;
}

可能比使用反射更便宜。

答案 16 :(得分:3)

当您从数据库中获取数据作为对象时,您可能希望这样做 - &gt;

// Suppose result is the end product from some query $query

$result = $mysqli->query($query);
$result = db_result_to_array($result);

function db_result_to_array($result)
{
$res_array = array();

for ($count=0; $row = $result->fetch_assoc(); $count++)
    $res_array[$count] = $row;

    return $res_array;
}

答案 17 :(得分:3)

您也可以使用The Symfony Serializer Component

use Symfony\Component\Serializer\Encoder\JsonEncoder;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Serializer;

$serializer = new Serializer([new ObjectNormalizer()], [new JsonEncoder()]);
$array = json_decode($serializer->serialize($object, 'json'), true);

答案 18 :(得分:3)

&#34; well-knwon&#34;代码

/*** mixed Obj2Array(mixed Obj)***************************************/ 
static public function Obj2Array($_Obj) {
    if (is_object($_Obj))
        $_Obj = get_object_vars($_Obj);
    return(is_array($_Obj) ? array_map(__METHOD__, $_Obj) : $_Obj);   
} // BW_Conv::Obj2Array

请注意,如果该函数是类的成员(如上所述),则必须将__FUNCTION__更改为__METHOD__

答案 19 :(得分:3)

function readObject($object) {
    $name = get_class ($object);
    $name = str_replace('\\', "\\\\", $name); \\ Comment this line, if you dont use class namespaces approach in your project
    $raw = (array)$object;

    $attributes = array();
    foreach ($raw as $attr => $val) {
        $attributes[preg_replace('('.$name.'|\*|)', '', $attr)] = $val;
    }
    return $attributes;
}

返回没有特殊字符和类名的数组

答案 20 :(得分:2)

这个答案只是这篇文章的不同答案的结合,但它是用关联数组中的简单值或数组转换具有公共或私有属性的PHP对象的解决方案......

function object_to_array($obj)
{
    if (is_object($obj)) $obj = (array)$this->dismount($obj);
    if (is_array($obj)) {
        $new = array();
        foreach ($obj as $key => $val) {
            $new[$key] = $this->object_to_array($val);
        }
    } else $new = $obj;
    return $new;
}

function dismount($object)
{
    $reflectionClass = new \ReflectionClass(get_class($object));
    $array = array();
    foreach ($reflectionClass->getProperties() as $property) {
        $property->setAccessible(true);
        $array[$property->getName()] = $property->getValue($object);
        $property->setAccessible(false);
    }
    return $array;
}

答案 21 :(得分:2)

@ SpYk3HH的简短解决方案

function objectToArray($o)
{
    $a = array();
    foreach ($o as $k => $v)
        $a[$k] = (is_array($v) || is_object($v)) ? objectToArray($v): $v;

    return $a;
}

答案 22 :(得分:2)

对于您而言,如果使用“装饰器”或“日期模型转换”模式,则是正确/美丽的。例如:

您的模型

class Car {
    /** @var int */
    private $color;

    /** @var string */
    private $model;

    /** @var string */
    private $type;

    /**
     * @return int
     */
    public function getColor(): int
    {
        return $this->color;
    }

    /**
     * @param int $color
     * @return Car
     */
    public function setColor(int $color): Car
    {
        $this->color = $color;
        return $this;
    }

    /**
     * @return string
     */
    public function getModel(): string
    {
        return $this->model;
    }

    /**
     * @param string $model
     * @return Car
     */
    public function setModel(string $model): Car
    {
        $this->model = $model;

        return $this;
    }

    /**
     * @return string
     */
    public function getType(): string
    {
        return $this->type;
    }

    /**
     * @param string $type
     * @return Car
     */
    public function setType(string $type): Car
    {
        $this->type = $type;

        return $this;
    }
}

装饰器

class CarArrayDecorator
{
    /** @var Car */
    private $car;

    /**
     * CarArrayDecorator constructor.
     * @param Car $car
     */
    public function __construct(Car $car)
    {
        $this->car = $car;
    }

    /**
     * @return array
     */
    public function getArray(): array
    {
        return [
            'color' => $this->car->getColor(),
            'type' => $this->car->getType(),
            'model' => $this->car->getModel(),
        ];
    }
}

用法

$car = new Car();
$car->setType('type#');
$car->setModel('model#1');
$car->setColor(255);

$carDecorator = new CarArrayDecorator($car);
$carResponseData = $carDecorator->getArray();

这样,它将使代码更美观,更正确。

答案 23 :(得分:1)

由于很多人因动态访问对象属性而遇到此线程,我只想指出你可以在php中执行此操作:$valueRow->{"valueName"}

在Context中(为了便于阅读,删除了HTML输出):

$valueRows = json_decode("{...}"); // rows of unordered values decoded from a json-object

foreach($valueRows as $valueRow){

    foreach($references as $reference){

        if(isset($valueRow->{$reference->valueName})){
            $tableHtml .= $valueRow->{$reference->valueName};
        }else{
            $tableHtml .= "&nbsp;";
        }

    }

}

答案 24 :(得分:1)

通过使用类型转换,您可以解决您的问题。 只需在返回对象中添加以下行:

$arrObj = array(yourReturnedObject);

您还可以使用以下方法为其添加新的键和值对:

$arrObj['key'] = value;

答案 25 :(得分:1)

我的建议是,如果你的对象中有私人成员的对象:

public function dismount($object) {
    $reflectionClass = new \ReflectionClass(get_class($object));
    $array = array();
    foreach ($reflectionClass->getProperties() as $property) {
        $property->setAccessible(true);
        if (is_object($property->getValue($object))) {
            $array[$property->getName()] = $this->dismount($property->getValue($object));
        } else {
            $array[$property->getName()] = $property->getValue($object);
        }
        $property->setAccessible(false);
    }
    return $array;
}

答案 26 :(得分:0)

出于单元Testig的目的,我建议改用json_decode(json_encode($object), true)。 因为如果您尝试对复杂对象(例如以下对象)使用(array) $obj,则单元测试将失败。考虑以下测试案例:

enter image description here

希望这对某人有帮助!

答案 27 :(得分:0)

我使用这个(需要具有正确密钥的递归解决方案):

    /**
     * This method returns the array corresponding to an object, including non public members.
     *
     * If the deep flag is true, is will operate recursively, otherwise (if false) just at the first level.
     *
     * @param object $obj
     * @param bool $deep = true
     * @return array
     * @throws \Exception
     */
    public static function objectToArray(object $obj, bool $deep = true)
    {
        $reflectionClass = new \ReflectionClass(get_class($obj));
        $array = [];
        foreach ($reflectionClass->getProperties() as $property) {
            $property->setAccessible(true);
            $val = $property->getValue($obj);
            if (true === $deep && is_object($val)) {
                $val = self::objectToArray($val);
            }
            $array[$property->getName()] = $val;
            $property->setAccessible(false);
        }
        return $array;
    }

用法示例,以下代码:

class AA{
    public $bb = null;
    protected $one = 11;

}

class BB{
    protected $two = 22;
}


$a = new AA();
$b = new BB();
$a->bb = $b;

var_dump($a)

将打印以下内容:

array(2) {
  ["bb"] => array(1) {
    ["two"] => int(22)
  }
  ["one"] => int(11)
}

答案 28 :(得分:0)

不是新的解决方案,但包括可用的toArray方法转换

function objectToArray($r)
{
  if (is_object($r)) {
    if (method_exists($r, 'toArray')) {
      return $r->toArray(); // returns result directly
    } else {
      $r = get_object_vars($r);
    }
  }

  if (is_array($r)) {
    $r = array_map(__FUNCTION__, $r); // recursive function call
  }

  return $r;
}

答案 29 :(得分:0)

我认为使用trait存储对象到数组转换逻辑是一个好主意。简单的例子

trait ArrayAwareTrait
{
    /**
     * Return list of Entity's parameters
     * @return array
     */
    public function toArray()
    {
        $props = array_flip($this->getPropertiesList());
        return array_map(
            function ($item) {
                if ($item instanceof \DateTime) {
                    return $item->format(DATE_ATOM);
                }
                return $item;
            },
            array_filter(get_object_vars($this), function ($key) use ($props) {
                return array_key_exists($key, $props);
            }, ARRAY_FILTER_USE_KEY)
        );
    }



    /**
     * @return array
     */
    protected function getPropertiesList()
    {
        if (method_exists($this, '__sleep')) {
            return $this->__sleep();
        }
        if (defined('static::PROPERTIES')) {
            return static::PROPERTIES;
        }
        return [];
    }
}

class OrderResponse
{
    use ArrayAwareTrait;

    const PROP_ORDER_ID = 'orderId';
    const PROP_TITLE = 'title';
    const PROP_QUANTITY = 'quantity';
    const PROP_BUYER_USERNAME = 'buyerUsername';
    const PROP_COST_VALUE = 'costValue';
    const PROP_ADDRESS = 'address';

    private $orderId;
    private $title;
    private $quantity;
    private $buyerUsername;
    private $costValue;
    private $address;

    /**
     * @param $orderId
     * @param $title
     * @param $quantity
     * @param $buyerUsername
     * @param $costValue
     * @param $address
     */
    public function __construct(
        $orderId,
        $title,
        $quantity,
        $buyerUsername,
        $costValue,
        $address
    ) {
        $this->orderId = $orderId;
        $this->title = $title;
        $this->quantity = $quantity;
        $this->buyerUsername = $buyerUsername;
        $this->costValue = $costValue;
        $this->address = $address;
    }

    /**
     * @inheritDoc
     */
    public function __sleep()
    {
        return [
            static::PROP_ORDER_ID,
            static::PROP_TITLE,
            static::PROP_QUANTITY,
            static::PROP_BUYER_USERNAME,
            static::PROP_COST_VALUE,
            static::PROP_ADDRESS,
        ];
    }

    /**
     * @return mixed
     */
    public function getOrderId()
    {
        return $this->orderId;
    }

    /**
     * @return mixed
     */
    public function getTitle()
    {
        return $this->title;
    }

    /**
     * @return mixed
     */
    public function getQuantity()
    {
        return $this->quantity;
    }

    /**
     * @return mixed
     */
    public function getBuyerUsername()
    {
        return $this->buyerUsername;
    }

    /**
     * @return mixed
     */
    public function getCostValue()
    {
        return $this->costValue;
    }

    /**
     * @return string
     */
    public function getAddress()
    {
        return $this->address;
    }
}

$orderResponse = new OrderResponse(...);
var_dump($orderResponse->toArray());

答案 30 :(得分:0)

这里我创建了一个 objectToArray()方法,该方法也适用于递归对象,例如当$objectA包含$objectB再次指向$objectA

此外,我已使用ReflectionClass将输出限制为公共属性。如果你不需要它,摆脱它。

    /**
     * Converts given object to array, recursively.
     * Just outputs public properties.
     *
     * @param object|array $object
     * @return array|string
     */
    protected function objectToArray($object) {
        if (in_array($object, $this->usedObjects, TRUE)) {
            return '**recursive**';
        }
        if (is_array($object) || is_object($object)) {
            if (is_object($object)) {
                $this->usedObjects[] = $object;
            }
            $result = array();
            $reflectorClass = new \ReflectionClass(get_class($this));
            foreach ($object as $key => $value) {
                if ($reflectorClass->hasProperty($key) && $reflectorClass->getProperty($key)->isPublic()) {
                    $result[$key] = $this->objectToArray($value);
                }
            }
            return $result;
        }
        return $object;
    }

为了识别已经使用过的对象,我在这个(抽象)类中使用了一个名为$this->usedObjects的受保护属性。如果找到递归嵌套对象,它将被字符串**recursive**替换。否则它会因为无限循环而失败。

答案 31 :(得分:0)

$Menu = new Admin_Model_DbTable_Menu(); 
$row = $Menu->fetchRow($Menu->select()->where('id = ?', $id));
$Addmenu = new Admin_Form_Addmenu(); 
$Addmenu->populate($row->toArray());