$fluid = fluidify($simplexml);
echo $fluid->xml();
echo "————————————————————————————————————————————————————————————————————————————————\n";
// XML file import.
// $fluid = fluidify('path/to/file.xml');
/******************
* XPath Queries. *
*******************/
/*
* XPath queries can be absolute or relative to the context over they are executed.
*/
$eggs = $food->query('//egg');
$fruits = $food->query('//fruit[@price="expensive"]');
echo "We have {$eggs->length()} eggs and {$fruits->length()} expensive fruit.\n";
echo "————————————————————————————————————————————————————————————————————————————————\n";
$book->query('//chapter')->attr('lang', 'en')->query('..')->attr('lang', 'en')->query('../title')->attr('lang', 'en');
/*
* The previous code presents a repetition: all 'setAttribute' calls are identical.
* It can be refactored taking advantage of an advanced feature of 'query'.
*/
$book->query('//chapter', '//chapters', '/book/title')->attr('lang', 'en');
/*******************************
* Accessing The Node Content. *
********************************/
/*
* The result of a query can be accessed even as array.
* Accessing the result of a query as array performs the unwrapping of the node
* and returns a raw instance of DOMNode.
* You loose the FluidXML interface but gain direct access to the DOMNode apis.
*/
$chapters = $book->query('//chapter');
describe('.asArray', function () {
it('should return an array of nodes inside the context', function () {
$xml = new FluidXml();
$cx = $xml->appendChild(['head', 'body'], true);
$a = $cx->asArray();
$actual = $a;
assert(\is_array($actual));
$actual = \count($a);
$expected = 2;
assert($actual === $expected, __($actual, $expected));
});
});
describe('.length', function () {
it('should return the number of nodes inside the context', function () {
$xml = new FluidXml();
$cx = $xml->query('/*');
$actual = $cx->length();
$expected = 1;
assert($actual === $expected, __($actual, $expected));
$cx = $xml->appendChild(['child1', 'child2'], true);
$actual = $cx->length();
$expected = 2;
assert($actual === $expected, __($actual, $expected));
$cx = $cx->appendChild(['subchild1', 'subchild2', 'subchild3']);
$actual = $cx->length();
$expected = 2;
assert($actual === $expected, __($actual, $expected));
$cx = $cx->appendChild(['subchild4', 'subchild5', 'subchild6', 'subchild7'], true);
$actual = $cx->length();
$expected = 8;
assert($actual === $expected, __($actual, $expected));
