(mongodb >=1.0.0)
MongoDB\BSON\ObjectID::__construct — Construct a new ObjectID
$id
] )
id (string)A 24-character hexadecimal string. If not provided, the driver will generate an ObjectID.
id is not a 24-character hexadecimal string.Example #1 MongoDB\BSON\ObjectID::__construct() example
<?php
var_dump(new MongoDB\BSON\ObjectId());
var_dump(new MongoDB\BSON\ObjectId('000000000000000000000001'));
?>
以上例程的输出类似于：
object(MongoDB\BSON\ObjectID)#1 (1) {
["oid"]=>
string(24) "56732d3dda14d81214634921"
}
object(MongoDB\BSON\ObjectID)#1 (1) {
["oid"]=>
string(24) "000000000000000000000001"
}