PHP 对象、数组间的转换

/**
* PHP 对象、数组间的转换
*
* @author flyer0126
* @since 2012/05/03
**/

// 1. 利用(array)和(object)，简单处理
$objTemp = (object)array();
$objTemp->a = 1;
$objTemp->b = 2;
$objTemp->c = 3;
$arrTemp = (array)$objTemp;
print_r($objTemp);
print_r($arrTemp);

/**
stdClass Object
(
[a] => 1
[b] => 2
[c] => 3
)
Array
(
[a] => 1
[b] => 2
[c] => 3
)
**/

// PS:简单的(array)和(object)只能处理单层的数据，对于多层的数组和对象转换则无能为力。

// 2. 多维数组与对象间的转换处理

/**
* 将对象转换为多维数组
*
**/
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;
}
}

/**
* 将多维数组转换为对象
*
**/
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;
}
}

// Useage:
$init = new stdClass;
$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($init);
print_r($array);
print_r($object);

/**
stdClass Object
(
[foo] => Test data
[bar] => stdClass Object
(
[baaz] => Testing
[fooz] => stdClass Object
(
[baz] => Testing again
)
)
[foox] => Just test
)
Array
(
[foo] => Test data
[bar] => Array
(
[baaz] => Testing
[fooz] => Array
(
[baz] => Testing again
)
)
[foox] => Just test
)
stdClass Object
(
[foo] => Test data
[bar] => stdClass Object
(
[baaz] => Testing
[fooz] => stdClass Object
(
[baz] => Testing again
)
)
[foox] => Just test
)
**/