simplexml_load_file
(PHP 5, PHP 7)
simplexml_load_file — Interprets an XML file into an object
说明
$filename
[, string $class_name = "SimpleXMLElement"
[, int $options = 0
[, string $ns = ""
[, bool $is_prefix = FALSE
]]]] ) : SimpleXMLElementConvert the well-formed XML document in the given file to an object.
参数
-
filename -
Path to the XML file
Note:
Libxml 2 unescapes the URI, so if you want to pass e.g. b&c as the URI parameter a, you have to call simplexml_load_file(rawurlencode('http://example.com/?a=' . urlencode('b&c'))). Since PHP 5.1.0 you don't need to do this because PHP will do it for you.
class_nameYou may use this optional parameter so that simplexml_load_file() will return an object of the specified class. That class should extend the SimpleXMLElement class.
options
Since PHP 5.1.0 and Libxml 2.6.0, you may also use the
options parameter to specify additional Libxml parameters.
nsNamespace prefix or URI.
is_prefix
TRUE if ns is a prefix, FALSE if it's a URI;
defaults to FALSE.
返回值
Returns an object of class SimpleXMLElement with
properties containing the data held within the XML document, 或者在失败时返回 FALSE.
错误／异常
Produces an E_WARNING error message for each error
found in the XML data.
Use libxml_use_internal_errors() to suppress all XML errors, and libxml_get_errors() to iterate over them afterwards.
范例
Example #1 Interpret an XML document
<?php
// The file test.xml contains an XML document with a root element
// and at least an element /[root]/title.
if (file_exists('test.xml')) {
$xml = simplexml_load_file('test.xml');
print_r($xml);
} else {
exit('Failed to open test.xml.');
}
?>
This script will display, on success:
SimpleXMLElement Object ( [title] => Example Title ... )
At this point, you can go about using $xml->title and any other elements.
参见
- simplexml_load_string() - Interprets a string of XML into an object
- SimpleXMLElement::__construct() - Creates a new SimpleXMLElement object
- Dealing with XML errors
- libxml_use_internal_errors() - Disable libxml errors and allow user to fetch error information as needed
- Basic SimpleXML usage