MongoDB\BSON\Document::offsetExists

(mongodb >=1.17.0)

MongoDB\BSON\Document::offsetExists — Returns whether a key is present in the document

说明

final public MongoDB\BSON\Document::offsetExists(mixed $key): bool

参数

key: The key to look for in the document.

返回值

Returns true if the key is present in the document and false otherwise.

参见

ArrayAccess::offsetExists() - 检查一个偏移位置是否存在
MongoDB\BSON\Document::has() - Returns whether a key is present in the document