PHP constructor construct the front underscore is a double __php technique

The

definition and Usage

__construct () function creates a new SimpleXMLElement object. If the

succeeds, the function returns an object. If it fails, it returns false.

Syntax

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

parameter	description
Data	is required. A well-formed XML string or path or URL to an XML document.
options	is optional. Specify the additional Libxml parameters.
is_url	is optional. Specify whether the data parameter is a URL. The default is False.
NS	is optional.
is_prefix	is optional. The

return value

Returns a SimpleXMLElement object that represents the 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]; 

Output is similar:

 Don ' t forget the meeting! 
 Then look at the construct before _ is a, I, I was this mistake last time, forget, now remember the 
 function __construct () 
 {} 
 
 is not a 
 function _construct () 
 {}