(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0)
XMLWriter::setIndent -- xmlwriter_set_indent — Toggle indentation on/off
面向对象风格
$indent
) : bool过程化风格
$xmlwriter
, bool $indent
) : boolToggles indentation on or off.
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。
indentWhether indentation is enabled.
成功时返回 TRUE， 或者在失败时返回 FALSE。
Example #1 XMLWriter::setIndent() and mixed Content
Enabling indentation is not suitable for mixed content, because the indent string is also inserted before inline elements.
<?php
$writer = new XMLWriter();
$writer->openMemory();
$writer->setIndent(2);
$writer->startDocument();
$writer->startElement('p');
$writer->text('before');
$writer->writeElement('a', 'element');
$writer->text('after');
$writer->endElement();
$writer->endDocument();
echo $writer->outputMemory();
?>
以上例程会输出：
<?xml version="1.0"?> <p>before <a>element</a> after</p>
Note:
The indent is reset when an xmlwriter is opened.