Home > Article > Backend Development > The leading underscore of the Php constructor construct is double__PHP Tutorial
The leading underscore of the Php constructor construct is double__PHP Tutorial
- WBOYOriginal
- 2016-07-21 15:42:261403browse
Definition and usage
__construct() function creates a new SimpleXMLElement object.
If successful, the function returns an object. If failed, returns false.
Grammar
__construct(data,options,is_url,ns,is_prefix)
| 参数 | 描述 |
|---|---|
| data | 必需。形式良好的 XML 字符串或 XML 文档的路径或 URL。 |
| options | 可选。规定附加的 Libxml 参数。 |
| is_url | 可选。规定 data 参数是否是 URL。默认是 false。 |
| ns | 可选。 |
| is_prefix | 可选。 |
Return value
Returns a SimpleXMLElement object representing the data.
Example
<?php $xmlstring = <<<XML <?xml version="1.0" encoding="ISO-8859-1"?> <note> <to>George</to> <from>John</from> <heading>Reminder</heading> <body>Don't forget the meeting!</body> </note> XML; $xml = new <code>SimpleXMLElement($xmlstring)</code>; echo $xml->body[0]; ?>
The output is similar to:
Don't forget the meeting!<br>后来看construct的前_是一个，我靠，上次也是这个错误，忘了，现在记着了 <br>function __construct() <br>{} <br><br>不是 <br>function _construct() <br>{}
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：PHP read file content code (txt, js, etc.)_PHP tutorialNext article：PHP read file content code (txt, js, etc.)_PHP tutorial