simplexml_load_string

Name:simplexml_load_string

Category:Uncategorized

Programming Language:php

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

Definition and usage

The simplexml_load_string() function converts a well-formed XML string into an object.

Example

Example 1

Convert an XML string to an object, and output the object's keys and elements:

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

$xml = simplexml_load_string ( $note ) ;
print_r ( $xml ) ;
?>

Run the instance

Example 2

Output data for each element in the XML string:

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

$xml = simplexml_load_string ( $note ) ;
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 string:

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

$xml = simplexml_load_string ( $note ) ;
echo $xml -> getName ( ) . "<br>" ;

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

Run the instance

grammar

 simplexml_load_string ( data , class , options , ns , is_prefix )

parameter	describe
data	Required. Specifies a well-formed XML string.
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.