The front underline Of construct in Php construct is double _

Definition and usage

The _ construct () function creates a new SimpleXMLElement object.

If yes, the function returns an object. If it fails, false is returned.

Syntax

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

Parameters	Description
Data	Required. The path or URL of an XML string or XML document.
Options	Optional. Specifies the additional Libxml parameter.
Is_url	Optional. Specifies whether the data parameter is a URL. The default value is false.
Ns	Optional.
Is_prefix	Optional.

Return Value

Returns a SimpleXMLElement object that represents data.

Example

<?php$xmlstring = <<<XML<?xml version="1.0" encoding="ISO-8859-1"?><note><to>George</to><from>John</from>SimpleXMLElement($xmlstring);echo $xml->body[0];?>

The output is similar:

Don't forget the meeting!
Later, we can see that the front _ of construct is one. I rely on it. This is also the last error. I forgot, but now I remember it.
Function _ construct ()
{}

No
Function _ construct ()
{}