__construct

Name:__construct

Category:Uncategorized

Programming Language:php

One-line Description:Creates a new SimpleXMLElement object.

Definition and usage

The __construct() function is used to create a new SimpleXMLElement object.

Example

Example 1

Create a SimpleXMLElement object from a string:

 <?php
$note = <<< XML
<note>
<to>George</to>
<from>John</from>
<heading>Reminder</heading>
<body>Do not forget the meeting!</body>
</note>
XML ;

$xml = new SimpleXMLElement ( $note ) ;
echo $xml -> asXML ( ) ;
?>

Run the instance

Example 2

Suppose we have the following XML file " note.xml ":

 <? xml version = "1.0" encoding = "UTF-8" ?>
< note >
    < to > George </ to >
    < from > John </ from >
    < heading > Reminder </ heading >
    < body > Don't forget me this weekend! </ body >
</ note >

Create a SimpleXMLElement object from the URL:

 <?php
$xml = new SimpleXMLElement ( "note.xml" , 0 , TRUE ) ;
echo $xml -> asXML ( ) ;
?>

Run the instance

grammar

 SimpleXMLElement :: __construct ( data , options , data_is_url , ns , is_prefix )

parameter	describe
data	Required. Specifies a well-formed XML string. If data_is_url is TRUE, specify the path or URL of the XML document.
options	Optional. Specify additional Libxml parameters. Set by specifying options and 1 or 0 (TRUE or FALSE, such as LIBXML_NOBLANKS(1)). Possible values include: LIBXML_COMPACT - Activate node allocation optimization (may accelerate application) LIBXML_DTDATTR - Set the default DTD attribute LIBXML_DTDLOAD - Loading external subsets LIBXML_DTDVALID - Verify using DTD LIBXML_NOBLANKS - Remove blank nodes LIBXML_NOCDATA - Merge CDATA into text nodes LIBXML_NOEMPTYTAG - Extended empty tags (e.g. <br/> to <br></br>) (Available only in the DOMDocument->save() and DOMDocument->saveXML() functions) LIBXML_NOENT - Replace entity LIBXML_NOERROR - No error report displayed LIBXML_NONET - Disable network access when loading a document LIBXML_NOWARNING - Warning report not displayed LIBXML_NOXMLDECL - Omit XML declaration when saving a document LIBXML_NSCLEAN - Remove redundant namespace declarations LIBXML_PARSEHUGE - Set the XML_PARSE_HUGE flag to relax the hard-coded limits of the parser. (This affects the maximum depth of the document and the limits of the text node size) LIBXML_XINCLUDE - Implement XInclude replacement LIBXML_ERR_ERROR - Get recoverable errors LIBXML_ERR_FATAL - Get a fatal error LIBXML_ERR_NONE - Get No Errors LIBXML_ERR_WARNING - Get a simple warning LIBXML_VERSION - Get the libxml version (for example 20605 or 20617) LIBXML_DOTTED_VERSION - Get the dotted version of libxml (for example, 2.6.5 or 2.6.17)
data_is_url	Optional. TRUE Specifies that data is the path/url of the XML document rather than string data. The default is FALSE.
ns	Optional. Specifies a namespace prefix or URI.
is_prefix	Optional. Specifies a boolean value. TRUE if ns is a prefix, and FALSE if ns is a URI. The default is FALSE.