PHP Manual
MongoId
Check if a value is a valid ObjectId

MongoId::isValid

(PECL mongo >= 1.5.0)

MongoId::isValid — Check if a value is a valid ObjectId

说明

public static MongoId::isValid ( mixed $value ) : bool

This method may be used to check a variable before passing it as an argument to MongoId::__construct().

参数

value: The value to check for validity.

返回值

Returns TRUE if value is a MongoId instance or a string consisting of exactly 24 hexadecimal characters; otherwise, FALSE is returned.

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