в 10:37, 26 мая 2010

2010-05-26T10:37:27Z

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2010-05-26T07:08:22Z

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==Combine it with an XPath search==



<source lang="html4strict">

<?
$xml = simplexml_load_file("employees.xml");
echo $xml->asXML( );
$xml->employee[1]->age = 55;
$employees = $xml->xpath("/employees/employee[name="A"]");
$employees[0]->title = "Officer";
echo $xml->asXML( );
?>

</source>

==Searching and Filtering with XPath==



<source lang="html4strict">

<?
$xml = simplexml_load_file("employees.xml");
$names = $xml->xpath("/employees/employee/name");
foreach($names as $name) {
echo "Found $name ";
}
echo " ";
$employees = $xml->xpath("/employees/employee");
foreach($employees as $employee) {
echo "Found {$employee->name} ";
}
$names = $xml->xpath("//name");
foreach($names as $name) {
echo "Found $name ";
}
?>

</source>

==Using XPath and DOM==



<source lang="html4strict">

$dom = new DOMDocument;
$dom->load("address-book.xml");
$xpath = new DOMXPath($dom);
$email = $xpath->query("/address-book/person/email");
//
<?xml version="1.0"?>
<address-book>
<person id="1">
<firstname>D</firstname>
<lastname>S</lastname>
<city>New York</city>
<state>NY</state>
<email>s@php.net</email>
</person>
<person id="2">
<firstname>A</firstname>
<lastname>T</lastname>
<city>San Francisco</city>
<state>CA</state>
<email>a@php.net</email>
</person>
</address-book>

</source>

==Using XPath and SimpleXML in a basic example==



<source lang="html4strict">

<?
$s = simplexml_load_file("address-book.xml");
$emails = $s->xpath("/address-book/person/email");
foreach ($emails as $email) {
// do something with $email
}
?>
//
<?xml version="1.0"?>
<address-book>
<person id="1">
<firstname>D</firstname>
<lastname>S</lastname>
<city>New York</city>
<state>NY</state>
<email>s@php.net</email>
</person>
<person id="2">
<firstname>A</firstname>
<lastname>T</lastname>
<city>San Francisco</city>
<state>CA</state>
<email>a@php.net</email>
</person>
</address-book>

</source>

==Using XPath with DOM in a basic example==



<source lang="html4strict">

<?
$dom = new DOMDocument;
$dom->load("address-book.xml");
$xpath = new DOMXPath($dom);
$emails = $xpath->query("/address-book/person/email");
foreach ($emails as $e) {
$email = $e->firstChild->nodeValue;
// do something with $email
}
?>
//
<?xml version="1.0"?>
<address-book>
<person id="1">
<firstname>D</firstname>
<lastname>S</lastname>
<city>New York</city>
<state>NY</state>
<email>s@php.net</email>
</person>
<person id="2">
<firstname>A</firstname>
<lastname>T</lastname>
<city>San Francisco</city>
<state>CA</state>
<email>a@php.net</email>
</person>
</address-book>

</source>

==Using XPath with SimpleXML in a more complicated example==



<source lang="html4strict">

<?
$s = simplexml_load_file("address-book.xml");
$people = $s->xpath("/address-book/person");
foreach($people as $p) {
list($firstname) = $p->xpath("firstname");
list($lastname) = $p->xpath("lastname");

print "$firstname $lastname\n";
}
?>
//
<?xml version="1.0"?>
<address-book>
<person id="1">
<firstname>D</firstname>
<lastname>S</lastname>
<city>New York</city>
<state>NY</state>
<email>s@php.net</email>
</person>
<person id="2">
<firstname>A</firstname>
<lastname>T</lastname>
<city>San Francisco</city>
<state>CA</state>
<email>a@php.net</email>
</person>
</address-book>

</source>

==XPath can be used to filter your results according to any values==



<source lang="html4strict">

<?
$xml = simplexml_load_file("employees.xml");
$employees = $xml->xpath("/employees/employee[name="Laura Pollard"]");
foreach($employees as $employee) {
echo "Found {$employee->name} ";
}
$employees = $xml->xpath("/employees/employee[age<54]");
foreach($employees as $employee) {
echo "Found {$employee->name} ";
}
$employees = $xml->xpath("//employee[age>=48]");
foreach($employees as $employee) {
echo "Found {$employee->name} ";
}
?>

</source>

==XPath DOM Query==



<source lang="html4strict">

<html>
<head>
<title>XPath DOM Query</title>
</head>
<body>

<?php
$dom = new DomDocument();
$dom -> load( "food.xml" );
$xp = new DomXPath( $dom );
$fruits = $xp -> query( "/food/fruit/item" );
foreach($fruits as $node)
{
echo( "<li>" . $node -> textContent . "</li>" );
}
echo( "</ul>" );
?>
</body>
</html>

</source>

==xpath.php==



<source lang="html4strict">

<?php
$xml = simplexml_load_file("books.xml");
$authors = $xml->xpath("/library/book/author");
foreach($authors AS $author) {
echo "$author ";
}
?>

</source>

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PHP/XML/xpath - История изменений

в 10:37, 26 мая 2010

Admin: 1 версия