PHP - xmlwriter_output_memory() 函数

定义和用法

XML 是一种标记语言，用于在网络上共享数据，XML 既可供人类阅读，也可供机器阅读。XMLWriter 扩展内部具有 libxml xmlWriter API，用于写入/创建 XML 文档的内容。由此生成的 XML 文档是非缓存的且仅向前。

xmlwriter_output_memory() 函数返回当前缓冲区。

语法

xmlwriter_output_memory($writer, $bool);

参数

返回值

如果成功，此函数返回一个 XMLWriter 对象；如果失败，则返回布尔值 FALSE。

PHP 版本

此函数首次引入于 PHP 5 版本，并在所有后续版本中均有效。

示例

以下示例演示了 xmlwriter_output_memory() 函数的用法：

<?php
   //Opening a writer
   $writer = xmlwriter_open_memory();

   //Starting the document
   xmlwriter_start_document($writer);

   //Starting an element
   xmlwriter_start_element($writer, 'Msg');

   //Adding text to the element
   xmlwriter_text($writer, 'Welcome to Tutorialspoint');  

   //Ending the element
   xmlwriter_end_element($writer);

   //Ending the document
   xmlwriter_end_document($writer);

   $res = xmlwriter_output_memory($writer);
   print($res);
?>

这将生成以下 XML 文档：

<?xml version="1.0"?>
<Msg>Welcome to Tutorialspoint</Msg>

示例

以下是此函数的面向对象风格示例：

<?php
   //Creating an XMLWriter
   $writer = new XMLWriter();

   //$uri = "result.xml";
   //Opening a writer
   $writer->openMemory();

   //Starting the document
   $writer->startDocument();

   //Starting an element
   $writer->startElement('Msg');

   //Adding text to the element
   $writer->text('Welcome to Tutorialspoint');  

   //Ending the element
   $writer->endElement();

   //Ending the document
   $writer->endDocument();
   $res = $writer->outputMemory();
   print($res);
?>

这将生成以下 XML 文档：

<?xml version="1.0"?>
<Msg>Welcome to Tutorialspoint</Msg>