PHP __construct() Function
 Complete PHP SimpleXML Reference
Definition and Usage
The __construct() function creates a new SimpleXMLElement object.
This function returns an object on success, and FALSE on failure.
Syntax
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__construct(file,class,options,ns,is_prefix)
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| Parameter |
Description |
| xml |
Required. Specifies the XML document or XML data to use |
| options |
Optional. Specifies additional Libxml parameters. Is set by
specifying the option and 1 or 0 (TRUE or FALSE, e.g. LIBXML_NOBLANKS(1))
Possible values:
- LIBXML_COMPACT - Set small nodes allocation optimization. This may
improve the application performance
- LIBXML_DTDATTR - Set default DTD attributes
- LIBXML_DTDLOAD - Load external subset
- LIBXML_DTDVALID - Validate with the DTD
- LIBXML_NOBLANKS - Remove blank nodes
- LIBXML_NOCDATA - Set CDATA as text nodes
- LIBXML_NOEMPTYTAG - Change empty tags (e.g. <br/> to <br></br>),
only available in the DOMDocument->save() and DOMDocument->saveXML()
functions
- LIBXML_NOENT - Substitute entities
- LIBXML_NOERROR - Do not show error reports
- LIBXML_NONET - Stop network access while loading documents
- LIBXML_NOWARNING - Do not show warning reports
- LIBXML_NOXMLDECL - Drop the XML declaration when saving a document
- LIBXML_NSCLEAN - Remove excess namespace declarations
- LIBXML_XINCLUDE - Use XInclude substitution
- LIBXML_ERR_ERROR - Get recoverable errors
- LIBXML_ERR_FATAL - Get fatal errors
- LIBXML_ERR_NONE - Get no errors
- LIBXML_ERR_WARNING - Get simple warnings
- LIBXML_VERSION - Get libxml version (e.g. 20605 or 20617)
- LIBXML_DOTTED_VERSION - Get dotted libxml version (e.g. 2.6.5 or
2.6.17)
|
| is_url |
Optional. Specifies if the xml parameter is an URL. Default
is FALSE |
| ns |
Optional |
| is_prefix |
Optional |
Example
<?php
$xmlstring = <<<XML
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
XML;
$xml = new SimpleXMLElement($xmlstring);
echo $xml->body[0];
?>
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The output of the code above will be:
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Don't forget me this weekend!
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