我正在尝试使用另一个属性数组在数组中查找一个对象(或多个对象)
我遇到了这个问题 在给定属性值的对象数组中查找数组键并找到了很好的解决方案,我对其进行了一点修改,最终得到:
//$array = array(object1,object2,object3);
//$attributes example array('first_name'=>'value','last_name'=>'value');
function filter_by_key($array, $attributes) {
$filtered = array();
foreach($array as $k => $v) {
//if($v->$member != $value) //stuck here
$filtered[$k] = $v;
}
return $filtered;
}
如何修改该行以测试所有给定$attributes?
array_filter是过滤数组的专用方法:
function createObject($first, $last) {
$object = new StdClass;
$object->first_name = $first;
$object->last_name = $last;
return $object;
}
$array = array( createObject('value1', 'value1'), createObject('value', 'value'));
$attributes = array('first_name'=>'value','last_name'=>'value');
var_dump(array_filter($array, function ($element) use($attributes) {
foreach ($attributes as $attribute => $value) {
if (is_object($element)
&& property_exists($element, $attribute)
&& $element->{$attribute} !== $value
) {
return false;
}
}
return true;
}));
输出:
array(1) {
[1]=>
object(stdClass)#4 (2) {
["first_name"]=>
string(5) "value"
["last_name"]=>
string(5) "value"
}
}
//$array = array(object1,object2,object3);
//$attributes = array('first_name'=>'value','last_name'=>'value');
$filtered = array_filter($array,
// that's the callback function that filters the object
function ($e){
global $attributes; // we need to make $attributes
// recognizable in the scope
foreach($attributes as $k => $v){
if($e[$k] == $v){ // only if object $e from the array has
// the same attribute and same value
return true; // add this object to $filtered
}
}
return false;
}
);
请注意,get_object_vars只看到公共属性。可能是更有效的 ReflectionClass::getProperties。
在编辑器中编码,以测试:
//$array = array(object1,object2,object3);
//$attributes example array('first_name'=>'value','last_name'=>'value');
function filter_by_key($array, $attributes) {
$filtered = array();
foreach($array as $obj) {
$found = true;
$obj_attr = get_object_vars($obj);
foreach($attributes as $attr => $val){
if(!isset($obj_attr[$attr]) || $obj_attr[$attr] != $val){
$found = false;
break;
}
}
if($found){
$filtered[$k] = $obj;
}
}
return $filtered;
}
我希望它能帮助你
数组( [945] =>成员对象 ( [id] => 13317 [名称] => 测试 999 [last_name] => 测试 999 ) [54] => 成员对象 ( [id] => 13316 [姓名] => 曼努埃尔 [last_name] => 玛丽亚·帕拉 ) [654] =>成员对象 ( [id] => 13315 [姓名] => 拜伦 [last_name] => 卡斯蒂略 ) [656] =>成员对象 ( [id] => 13314 [姓名] => 塞萨尔 [last_name] => 巴斯克斯 ))
function filter_by_key($array, $member, $attributes) {
$filtered = array();
foreach ($array as $k => $v) {
if (in_array($v->$member, $attributes)) {
$filtered[$k] = $v;
}
}
return $filtered;
}
$filterd = filter_by_key($array, 'id', array('13316','13317'));