Download Xml File Php
Basic SimpleXML usage
Many examples in this reference require an XML string. Instead of repeating this string in every example, we put it into a file which we include in each example. This included file is shown in the following example section. Alternatively, you could create an XML document and read it with simplexml_load_file().
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Example #1 Include file example.php with XML string
<?php
$xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<movies>
<movie>
<title>PHP: Behind the Parser</title>
<characters>
<character>
<name>Ms. Coder</name>
<actor>Onlivia Actora</actor>
</character>
<character>
<name>Mr. Coder</name>
<actor>El ActÓr</actor>
</character>
</characters>
<plot>
So, this language. It's like, a programming language. Or is it a
scripting language? All is revealed in this thrilling horror spoof
of a documentary.
</plot>
<great-lines>
<line>PHP solves all my web problems</line>
</great-lines>
<rating type='thumbs'>7</rating>
<rating type='stars'>5</rating>
</movie>
</movies>
XML;
?>The simplicity of SimpleXML appears most clearly when one extracts a string or number from a basic XML document.
Example #2 Getting <plot>
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
echo $movies->movie[0]->plot;
?>Accessing elements within an XML document that contain characters not permitted under PHP's naming convention (e.g. the hyphen) can be accomplished by encapsulating the element name within braces and the apostrophe.
Example #3 Getting <line>
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
echo $movies->movie->{'great-lines'}->line;
?>Example #4 Accessing non-unique elements in SimpleXML
When multiple instances of an element exist as children of a single parent element, normal iteration techniques apply.
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
/* For each <character> node, we echo a separate <name>. */
foreach ($movies->movie->characters->character as $character) {
echo $character->name, ' played by ', $character->actor, PHP_EOL;
}
?>Note:
Properties ($movies->movie in previous example) are not arrays. They are iterable and accessible objects.
Example #5 Using attributes
So far, we have only covered the work of reading element names and their values. SimpleXML can also access element attributes. Access attributes of an element just as you would elements of an array.
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
/* Access the <rating> nodes of the first movie.
* Output the rating scale, too. */
foreach ($movies->movie[0]->rating as $rating) {
switch((string) $rating['type']) { // Get attributes as element indices
case 'thumbs':
echo $rating, ' thumbs up';
break;
case 'stars':
echo $rating, ' stars';
break;
}
}
?>Download Xml File From Url
Example #6 Comparing Elements and Attributes with Text
To compare an element or attribute with a string or pass it into a function that requires a string, you must cast it to a string using (string). Otherwise, PHP treats the element as an object.
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<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
if ((string) $movies->movie->title 'PHP: Behind the Parser') {
print 'My favorite movie.';
}
echo htmlentities((string) $movies->movie->title);
?>Example #7 Comparing Two Elements
Two SimpleXMLElements are considered different even if they point to the same element since PHP 5.2.0.
<?php
include 'example.php';
$movies1 = new SimpleXMLElement($xmlstr);
$movies2 = new SimpleXMLElement($xmlstr);
var_dump($movies1 $movies2); // false since PHP 5.2.0
?>Example #8 Using XPath
SimpleXML includes built-in XPath support. To find all <character> elements:
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
foreach ($movies->xpath('//character') as $character) {
echo $character->name, ' played by ', $character->actor, PHP_EOL;
}
?>'//' serves as a wildcard. To specify absolute paths, omit one of the slashes.
Example #9 Setting values
Data in SimpleXML doesn't have to be constant. The object allows for manipulation of all of its elements.
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
$movies->movie[0]->characters->character[0]->name = 'Miss Coder';
echo $movies->asXML();
?>Example #10 Adding elements and attributes
Since PHP 5.1.3, SimpleXML has had the ability to easily add children and attributes.
<?php
include 'example.php';
$movies = new SimpleXMLElement($xmlstr);
$character = $movies->movie[0]->characters->addChild('character');
$character->addChild('name', 'Mr. Parser');
$character->addChild('actor', 'John Doe');
$rating = $movies->movie[0]->addChild('rating', 'PG');
$rating->addAttribute('type', 'mpaa');
echo $movies->asXML();
?>Example #11 DOM Interoperability
PHP has a mechanism to convert XML nodes between SimpleXML and DOM formats. This example shows how one might change a DOM element to SimpleXML.
<?php
$dom = new DOMDocument;
$dom->loadXML('<books><book><title>blah</title></book></books>');
if (!$dom) {
echo 'Error while parsing the document';
exit;
}
$books = simplexml_import_dom($dom);
echo $books->book[0]->title;
?>Because most modern browsers display PDF and media files inline, use the PHP programming language — which allows you to change the HTTP headers of files that you’re writing — to force the browser to download rather than display a given file type.
You'll need PHP on the web server where your files will be hosted, a file to be downloaded, and the MIME type of the file in question.
How to Use PHP to Force a File to Download
This process requires two separate steps. First, you'll create a PHP file that governs the file you wish to protect, and then you'll add a reference to that PHP file within the HTML of the page in which it appears.
After you upload a file to the server, create a PHP document in a text editor. If, for example, you wish to force sample.pdf to download instead of to display inline, create a script like this:
The content-type reference in the PHP is important — it's the MIME type of the file you're protecting. If, for example, you saved an MP3 file instead, you'd need to replace application/pdf with audio/mpeg.
There should be no spaces or carriage returns anywhere in the file (except after a semi-colon). Blank lines will cause PHP to default to the MIME type of text/html and your file won't download.
Save the PHP file to the same location as your HTML pages. Then modify the page's link to the PDF as follows:
Php Xml Example
Considerations
Download Xml File Into Excel
Two important considerations govern this procedure. First, if someone discovered the direct link to the PDF file, he or she can access it directly without the PHP getting in the way. Second, you'll need PHP protection for each file you wish to protect using this quick-and-easy approach. To protect several files in this manner, it makes sense to name the protected file and the PHP file with the same name, differing only in the extension, to keep everything straight.