XMLReader::readString()

(PHP 5 >= 5.2.0, PHP 7)

Reads the contents of the current node as a string

说明

publicXMLReader::readString(void): string

Reads the contents of the current node as a string.

参数

此函数没有参数。

返回值

Returns the content of the current node as a string. Empty string on failure.

注释

Caution

此函数仅在 PHP 与 libxml 20620 或以上版本编译时可用。

参见

XMLReader::readOuterXml() Retrieve XML from current node, including itself
XMLReader::readInnerXml() Retrieve XML from current node
XMLReader::expand() Returns a copy of the current node as a DOM object

For those who, like me, are having trouble figuring out the difference between getString() an getInnerXML(), the difference is that getString() does NOT include markup. So, for:
<foo>bar<baz>Hello, world!</baz></foo>
getString() on the <foo> node would return
bar Hello, world!
whereas getInnerXML() would return
bar<baz>Hello, world!</baz>

I would like to reiterate that this does not work when compiled with versions of libxml lower than 20620. I found that it just presents a blank page.
<?php $string = $reader->readString(); ?>
I worked around this issue by adding the following helper function:
<?php
function read_string($reader) {
  $node = $reader->expand();
  return $node->textContent;
}
?>
And then using:
<?php $string = read_string($reader); ?>

Important:
When using it use -> instead of ::.
You have to use :: only on static functions and then you have not to create a class object.