(PECL mongo >= 1.5.0)
Check if a value is a valid ObjectId
public static bool MongoId::isValid ( mixed $value )
This method may be used to check a variable before passing it as an argument to MongoId::__construct().
Parameters:
value
The value to check for validity.
Returns:
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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