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How to create a simple xml file through php

Posted on 2010-08-25
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How to create a simple xml file through php, simple date.
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Question by:mugsinc
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jezweb earned 2000 total points
ID: 33519208
There's a lot of examples about this on the web, eg ref to
http://www.developerfusion.com/code/3944/how-to-create-xml-files/


If you need to create XML files in PHP, you can do it without having to create the tags yourself with strings. This code shows you how to use the new_child functions to create an XML file.

<?
$doc = new_xmldoc('1.0');
$root = $doc->add_root('members');
$member = $root->new_child('member','');

$member->new_child('lastName','John');
$member->new_child('firstName','Adams');
$member->new_child('contribution','3400');

$member = $root->new_child('member','');

$member->new_child('lastName','Debra');
$member->new_child('firstName','Hones');
$member->new_child('contribution','2400');

$member = $root->new_child('member','');

$member->new_child('lastName','Jake');
$member->new_child('firstName','Tudor');
$member->new_child('contribution','1200');

$fp = @fopen('members.xml','w');
if(!$fp) {
    die('Error cannot create XML file');
}
fwrite($fp,$doc->dumpmem());
fclose($fp);
?>
would create the following XML file.

<members>
  <member>
    <lastName>John</lastName>
    <firstName>Adams</firstName>
    <contribution>3400</contribution>
  </member>
  <member>
    <lastName>Debra</lastName>
    <firstName>Hones</firstName>
    <contribution>2400</contribution>
  </member>
  <member>
    <lastName>Jake</lastName>
    <firstName>Tudor</firstName>
    <contribution>1200</contribution>
  </member>
</members>

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Author Comment

by:mugsinc
ID: 33519229
i get the below error when i run the file

Fatal error: Call to undefined function new_xmldoc() in D:\xxxx\xxxxx\html\xirr\create.php on line 13
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Expert Comment

by:jezweb
ID: 33519296
if you use

$doc = new xmldoc('1.0');

instead of

$doc = new_xmldoc('1.0');

does it work?
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Author Comment

by:mugsinc
ID: 33519345
nope, i get this error now

Fatal error: Class 'xmldoc' not found in D:\Hosting\5806313\html\xirr\create.php on line 13
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Expert Comment

by:Beverley Portlock
ID: 33519348
You may not have the XML_DOM functions installed in PHP. However simpleXML is installed by default and is good enough for general use.

http://uk2.php.net/manual/en/book.simplexml.php


<?php

$xml = new SimpleXMLElement("<base></base>");

$xml->addChild("field1", "a value");
$xml->addChild("field2", "another value");
$xml->addChild("multi");
$xml->multi->addChild("Another", "1234");
$xml->multi->addChild("Another", "9876");

echo $xml->asXml();

// To show it "directly" in the browser we will use htmlentities

echo "<br/>";
echo htmlentities( $xml->asXml() );

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Author Comment

by:mugsinc
ID: 33519374
bportlock, whats the file name it creates?
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Expert Comment

by:Beverley Portlock
ID: 33519417
It does not create a file, it creates the XML in memory but it is easily written to a file using file_put_contents

   file_put_contents("anXmlFile.xml", $xml->asXml() );

http://www.php.net/file_put_contents


Unless you are creating *huge* amounts of XML then SimpleXML will work fine. If your XML is going to be (say) 10 MB in size then install the XML_WRITER or XML_DOM tools or write it directly to file yourself.
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Author Comment

by:mugsinc
ID: 33519441
this is the error i get when i try to create the file

Warning: file_put_contents(anXmlFile.xml) [function.file-put-contents]: failed to open stream: Permission denied in
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Expert Comment

by:Beverley Portlock
ID: 33519510
That is not an XML error, it simply means that the web daemon (Apache) has no permission to write to whatever folder it is trying to use. Try putting in a full path

file_put_contents("/path/to/my/folder/anXmlFile.xml", $xml->asXml() );


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Author Comment

by:mugsinc
ID: 33519530
Warning: file_put_contents(D:\Hosting806313\html\xirr\members.xml) [function.file-put-contents]: failed to open stream: Invalid argument in D:\Hosting\5806313\html\xirr\create.php on line 24
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Author Comment

by:mugsinc
ID: 33519535
i used a coldfusion and created a xml file in the same folder, but i cant replicate the same function in PHP
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Expert Comment

by:Beverley Portlock
ID: 33519645
Please post the code fragment you are using. Also in PHP path names use '/' rather than '\' even if you are on Windows. You cannot use '\' in a doublequoted PHP string as it acts as an escaping mechanism. PHP will translate the foward slashes to back slashes automatically.
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Author Comment

by:mugsinc
ID: 33519700
i tried both and got the same error
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Expert Comment

by:Beverley Portlock
ID: 33520006
Please post the code here.
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Expert Comment

by:wmadrid1
ID: 33520009
mugsinc
You can try retireve the xml file without have the xml extension loaded in the server:


<?
echo '<?xml version="1.0" encoding="UTF-8" ?>';
echo '<Data>';
echo "<record att='nothing'></record>";
echo '</Data>';
?>

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