MongoDB\BSON\Document::has

(mongodb >=1.16.0)

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

说明

final public MongoDB\BSON\Document::has(string $key): bool

参数

key (string): The key to look for in the document.

返回值

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

错误／异常

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

参见

MongoDB\BSON\Document::get() - Returns the value of a key in the document
» BSON Types