(PHP 5, PHP 7, PHP 8)
SimpleXMLElement::__construct — Creates a new SimpleXMLElement object
$data
, int $options = 0
, bool $data_is_url = false
, string $ns = ""
, bool $is_prefix = false
)Creates a new SimpleXMLElement object.
data
A well-formed XML string or the path or URL to an XML document if
data_is_url 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.
data_is_url
By default, data_is_url is false. Use true to
specify that data is a path or URL to an XML
document instead of string data.
nsNamespace prefix or URI.
is_prefix
true if ns is a prefix, false if it's a URI;
defaults to false.
Returns a SimpleXMLElement object representing
data.
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.
| 版本 | 说明 |
|---|---|
| 5.2.0 | Added the ns and is_prefix parameters. |
| 5.1.2 | Added the options and data_is_url parameters. |
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();
?>