PHP | XMLWriter startAttributeNs()函数
XMLWriter::startAttributeNs()函数是PHP中的一个内置函数,用于启动命名空间属性。稍后可以使用XMLWriter::endAttribute()函数关闭此属性。通常样式网页在命名空间属性中不起作用。
句法:
bool XMLWriter::startAttributeNs( string $prefix,
string $name, string $uri )
参数:此函数接受三个参数,如上所述,如下所述:
- $prefix:它指定命名空间的前缀。
- $name:它指定命名空间的名称。
- $uri:它指定命名空间的值。
返回值:此函数在成功时返回 TRUE,在失败时返回 FALSE。
下面的示例说明了PHP中的XMLWriter::startAttributeNs()函数:
示例 1:
openURI('php://output');
// Start the document
$writer->startDocument('1.0', 'UTF-8');
// Start a element
$writer->startElement('div');
// Start the namespaced attribute
$writer->startAttributeNs('pre', 'attrib', 'value');
// Add value to the attribute
$writer->text('value');
// End the attribute
$writer->endAttribute();
// End the element
$writer->endElement();
// End the document
$writer->endDocument();
?>
输出:
示例 2:
openURI('php://output');
// Start the document
$writer->startDocument('1.0', 'UTF-8');
// Start a element
$writer->startElement('div');
// Start the namespaced attribute with style attribute
// This will not work because it is namespaced
$writer->startAttributeNs('style', 'attrib', 'value');
// Add value to the attribute
$writer->text('color:blue');
// End the attribute
$writer->endAttribute();
// Add value to the element
$writer->text('Namespaced GeeksforGeeks');
// End the element
$writer->endElement();
// Start a h1 element
$writer->startElement('h1');
// Start the style attribute
$writer->startAttribute('style');
// Add value to the attribute
$writer->text('color:green');
// End the attribute
$writer->endAttribute();
// Add value to the element
$writer->text('Normal GeeksforGeeks');
// End the element
$writer->endElement();
// End the document
$writer->endDocument();
?>
输出:
参考: https://www. PHP.net/manual/en/函数.xmlwriter-start-attribute-ns。 PHP