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The leading underscore of the Php constructor construct is double__PHP Tutorial

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Release： 2016-07-21 15:42:26
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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)
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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];
?>
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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>{}
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www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/320957.htmlTechArticleDefinition and usage The __construct() function creates a new SimpleXMLElement object. If successful, the function returns an object. If failed, returns false. Syntax __constru...
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