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What does construct mean in PHP?

藏色散人Original: 2021-12-31 10:57:372413browse

Construct in PHP refers to the __construct() function, which is used to create a new SimpleXMLElement object. Its syntax is "__construct(data, options, is_url, ns, is_prefix)".

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

What does construct mean in PHP?

PHP __construct() function

#__construct() function creates a new SimpleXMLElement object.

If successful, the function returns an object. If failed, returns false.

Syntax

__construct(data,options,is_url,ns,is_prefix)

参数 
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&#39;t forget the meeting!</body>
</note>
XML;
$xml = new SimpleXMLElement($xmlstring);
echo $xml->body[0];
?>

Output is similar:

Don&#39;t forget the meeting!

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