我有一个变量，它可能是对象或数组。如果它是一个数组，那么它将由对象组成。每个对象可以具有一个参数，该参数是另一个对象或对象阵列。所有阵列都可以是n级深。
所有对象都有一个参数"isAccessible"。此参数的值可能为true或false。
如果为false，则必须从结构中删除该对象。
我尝试过array_filter，因为我不能像描述的那样递归过滤，所以我写了一个homerolled递归函数。
然而，我一直没能让它发挥作用。这是我的代码：
public static function jsonGateway($json) {
$object = json_decode($json);
$newJSON = '';
// $object may be a stdClass Object or it may be an array of stdClass Objects
// An objects parameters may be a string, integer, or an array of stdClass Objects.
// This function must recurse arbitrarily deep
// Any object where isAccessible = 0 must be purged (numeric string or int?)
if (is_object($object)) {
if ($object->isAccessible == 1 || $object->isAccessible == '1' || $object->isAccessible == true) {
$newJSON = $json;
}
} else if (is_array($object)) {
$newJSON = json_encode(self::filterRecursive($object));
}
echo $newJSON;
}
public static function filterRecursive(Array $source) {
$result = array();
foreach ($source as $key => $value) {
if (is_object($value)) {
$object = $value; // Just a comprehension aid
if ($object->isAccessible == 1 || $object->isAccessible == '1' || $object->isAccessible == true) {
// Keep this object
// This objec though, may have a parameter which is an array
// If so, we need to recurse
$objectVars = get_object_vars($object);
if (count($objectVars) > 0) {
foreach ($objectVars as $objectParameter => $objectValue) {
if (is_object($objectValue)) {
if ($object->isAccessible == 1 || $object->isAccessible == '1' || $object->isAccessible == true) {
$object[$objectParameter] = $objectValue;
}
} else if (is_array($objectValue)) {
$object[$objectParameter] = self::filterRecursive($objectValue); // Line 177
}
}
}
$result[$key] = $object;
} else {
// don't need this block
error_log("deleting: " . print_r($object,true));
}
}
if (is_array($value)) {
$array = $value; // Just a comprehension aid
$result[$key] = self::FilterRecursive($array);
continue;
}
}
return $result;
}
我不仅没有成功过滤任何东西，我得到了以下错误：
PHP Fatal error: Cannot use object of type stdClass as array in /home1/lowens/public_html/dev/classes/Lifestyle/RBAC.php on line 177
你能帮忙吗？
解决方案：
/**
* @param array $array
* @return array
*/
public static function filterArray(Array $array) {
$result = array();
foreach ($array as $key => $value) {
if (is_object($value)) {
$newObject = self::filterObject($value);
if (count(get_object_vars($newObject)) > 0) {
$result[$key] = $newObject;
}
} else if (is_array($value)) {
$newArray = self::filterArray($value);
if (count($newArray) > 0) {
$result[$key] = $newArray;
}
} else {
$result[$key] = $value;
}
}
return $result;
}
/**
* @param 'stdClass $object
* @return 'stdClass
*/
public static function filterObject('stdClass $object) {
$newObject = new 'stdClass();
if ($object->isAccessible == 1) {
$objectVars = get_object_vars($object);
foreach ($objectVars as $objectParameter => $objectValue) {
if (is_object($objectValue)) {
$newObject->$objectParameter = self::filterObject($objectValue);
} else if (is_array($objectValue)) {
$newObject->$objectParameter = self::filterArray($objectValue);
} else {
$newObject->$objectParameter = $objectValue;
}
}
}
return $newObject;
}