Arrays 如何检查对象中是否存在属性?

Arrays 如何检查对象中是否存在属性?,arrays,symfony,oop,object,properties,Arrays,Symfony,Oop,Object,Properties,这是我的对象字段: {#7139 ▼ +"id": array:9 [▼ "fieldName" => "id" "type" => "integer" "scale" => 0 "length" => null "unique" => false "nullable" => false "precision" => 0 "id" => true "columnName"

这是我的对象
字段

{#7139 ▼
  +"id": array:9 [▼
    "fieldName" => "id"
    "type" => "integer"
    "scale" => 0
    "length" => null
    "unique" => false
    "nullable" => false
    "precision" => 0
    "id" => true
    "columnName" => "id"
  ]
  +"name": array:8 [▼
    "fieldName" => "name"
    "type" => "string"
    "scale" => 0
    "length" => 255
    "unique" => false
    "nullable" => false
    "precision" => 0
    "columnName" => "name"
  ]
  +"unique_id": array:8 [▼
    "fieldName" => "unique_id"
    "type" => "string"
    "scale" => 0
    "length" => 10
    "unique" => true
    "nullable" => false
    "precision" => 0
    "columnName" => "unique_id"
  ]
  +"productgroup": array:20 [▼
    "fieldName" => "productgroup"
    "joinTable" => array:3 [▶]
    "targetEntity" => "App\Entity\Productgroup"
    "mappedBy" => null
    "inversedBy" => null
    "cascade" => []
    "orphanRemoval" => false
    "fetch" => 2
    "type" => 8
    "isOwningSide" => true
    "sourceEntity" => "App\Entity\Products"
    "isCascadeRemove" => false
    "isCascadePersist" => false
    "isCascadeRefresh" => false
    "isCascadeMerge" => false
    "isCascadeDetach" => false
    "joinTableColumns" => array:2 [▶]
    "isOnDeleteCascade" => true
    "relationToSourceKeyColumns" => array:1 [▶]
    "relationToTargetKeyColumns" => array:1 [▶]
  ]
}
我想获取包含
relationToSourceKeyColumns

这是我的方法:

  foreach ($fields as $field) {
      $ManyToMany = property_exists($field['fieldName'], 'relationToSourceKeyColumns');
      if($ManyToMany == true){
        $result = $field['fieldName'];
      }
    }
结果是:

""
"productgroup"
但我的预期结果是:

""
"productgroup"

函数
属性\u存在
用于对象()。在您的结构中,搜索键位于数组中,可以使用
array\u key\u exists
()

函数
属性_存在
用于对象()。在您的结构中,搜索键位于数组中,可以使用
array\u key\u exists
()

啊,这是正确的解决方案:
array\u key\u exists('relationToSourceKeyColumns',$field)
啊,这是正确的解决方案:
array\u key\u exists('relationToSourceKeyColumns',$field)