MongoDB\BSON\ObjectId
PHP Manual

MongoDB\BSON\ObjectId::__toString

(mongodb >=1.0.0)

MongoDB\BSON\ObjectId::__toStringReturns the hexidecimal representation of this ObjectId

说明

final public string MongoDB\BSON\ObjectId::__toString ( void )

参数

此函数没有参数。

返回值

Returns the hexidecimal representation of this ObjectId.

错误/异常

范例

Example #1 MongoDB\BSON\ObjectId::__toString() example

<?php

var_dump
((string) new MongoDB\BSON\ObjectId());
var_dump((string) new MongoDB\BSON\ObjectId('000000000000000000000001'));

?>

以上例程的输出类似于:

string(24) "56731b49da14d8747d701211"
string(24) "000000000000000000000001"

参见


MongoDB\BSON\ObjectId
PHP Manual