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(PHP 5, PHP 7, PHP 8)
SimpleXMLElement::__construct — Creates a new SimpleXMLElement object
$data,$options = 0,$dataIsURL = false,$namespaceOrPrefix = "",$isPrefix = falseCreates a new SimpleXMLElement object.
data
A well-formed XML string or the path or URL to an XML document if
dataIsURL is true.
options
Optionally used to specify additional
Libxml parameters, which affect reading of XML documents. Options which affect the
output of XML documents (e.g. LIBXML_NOEMPTYTAG) are silently ignored.
注意:
It may be necessary to pass
LIBXML_PARSEHUGEto be able to process deeply nested XML or very large text nodes.
dataIsURL
By default, dataIsURL is false. Use true to
specify that data is a path or URL to an XML
document instead of string data.
namespaceOrPrefix
Namespace prefix or URI.
isPrefix
true if namespaceOrPrefix is a prefix, false if it's a URI;
defaults to false.
Produces an E_WARNING error message for each error
found in the XML data and additionally throws an Exception if the XML data
could not be parsed.
Use libxml_use_internal_errors() to suppress all XML errors, and libxml_get_errors() to iterate over them afterwards.
注意:
Listed examples may include
example.php, which refers to the XML string found in the first example of the basic usage guide.
示例 #1 Create a SimpleXMLElement object
<?php
include 'example.php';
$sxe = new SimpleXMLElement($xmlstr);
echo $sxe->movie[0]->title;
?>
以上例程会输出：
PHP: Behind the Parser
示例 #2 Create a SimpleXMLElement object from a URL
<?php
$sxe = new SimpleXMLElement('http://example.org/document.xml', NULL, TRUE);
echo $sxe->asXML();
?>
