simplexml_load_file

Name:simplexml_load_file

Category:Uncategorized

Programming Language:php

One-line Description:Convert an XML document to an object.

Definition and usage

simplexml_load_file() function converts an XML document to an object.

Example

Example 1

Convert the XML file to an object, and output the keys and elements of the object:

 <?php
$xml = simplexml_load_file ( "note.xml" ) ;
print_r ( $xml ) ;
?>

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 >

Output data for each element in the XML file:

 <?php
$xml = simplexml_load_file ( "note.xml" ) ;
echo $xml -> to . "<br>" ;
echo $xml -> from . "<br>" ;
echo $xml -> heading . "<br>" ;
echo $xml -> body ;
?>

Run the instance

Example 3

Output the element name and data of each child node in the XML file:

 <?php
$xml = simplexml_load_file ( "note.xml" ) ;
echo $xml -> getName ( ) . "<br>" ;

foreach ( $xml -> children ( ) as $child )
  {
  echo $child -> getName ( ) . ": " . $child . "<br>" ;
  }
?>

Run the instance

grammar

 simplexml_load_file ( file , class , options , ns , is_prefix )

parameter	describe
file	Required. Specifies the path to the XML file.
class	Optional. Specifies the class name of the new object.
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 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)
ns	Optional. Specifies a namespace prefix or URI.
is_prefix	Optional. Specifies a boolean value. If ns is a prefix, it is TRUE; if ns is a URI, it is FALSE. The default is FALSE.