XMLWriter::startDocument

(PHP 5 >= 5.1.2, PECL xmlwriter >= 0.1.0)

XMLWriter::startDocument — Create document tag

面向对象风格

bool XMLWriter::startDocument ([ string $version [, string $encoding [, string $standalone ]]] )

过程化风格

bool xmlwriter_start_document ( resource $xmlwriter [, string $version [, string $encoding [, string $standalone = NULL ]]] )

Starts a document.

xmlwriter: 仅用于过程调用。被修改的 XMLWriter resource。此资源来自于对 xmlwriter_open_uri() 或 xmlwriter_open_memory() 的调用。
version: The version number of the document as part of the XML declaration. Defaults to 1.0.
encoding: The encoding of the document as part of the XML declaration. NULL by default.
standalone: yes or no.

成功时返回 TRUE，或者在失败时返回 FALSE.