学说如何搜索对象数组

Question

我有对象数组

$states = $this->getDoctrine()->getRepository(LocationState::class)->findAll();

如何检查$states是否包含带有数据的对象？

LocationState {#102960 ▼
  -id: 1
  -ident: "02"
  -name: "NAME"
  -country: LocationCountry {#102992 ▶}
}

这不是 ArrayCollection，而是 Array of Objects。

Answer 1

对于对象数组：

$found = !empty(array_filter($objects, function ( $obj ) {
    return $obj->name == 'NAME' && $obj->id == 1;
}));

对于 ArrayCollection：

$found = $objects->exists(function ( $obj ) {
    return $obj->name == 'NAME' && $obj->id == 1;
});

Answer 2

如果您希望查询检索它们：

$this->getDoctrine()->getRepository(LocationState::class)
  ->findBy(['name' => 'NAME', 'ident' => '02']);

如果您只想知道指定的对象是否在您的集合中，则必须使用一些代码

 $states = $this->getDoctrine()->getRepository(LocationState::class)->findAll();
  $found = false;
  foreach($state in $states) {
    if($state->getName() == 'NAME' && $state->getIdent() == '02' ) {
      $found = true;
    }
  }

学说2 数组集合过滤方法