I am not very sure why my inner loop data is added to the external loop data-
XML I am parsing - http://pastebin.com/vGc5NhXr
Code I am using -
<?php
$dom = new DomDocument;
$dom->preserveWhiteSpace = FALSE;
$dom->load('course/Golf/imsmanifest.xml');
// get the resources element
$organization = $dom->getElementsByTagName( "item" );
echo '<ul>';
foreach( $organization as $organizationItem )
{
$unitTitle = $organizationItem->getElementsByTagName("title");
$unitName = $unitTitle->item(0)->nodeValue;
echo '<li>',$unitName,'</li>';
echo '<ul>';
$item1 = $organizationItem->getElementsByTagName( "item" );
foreach( $item1 as $myitem ) {
$title = $myitem->getElementsByTagName("title");
$author = $title->item(0)->nodeValue;
echo '<li>',$author,'</li>';
}
echo '</ul>';
}
echo '</ul>';
Generated output - http://codepad.org/J2vP71rd
Expected Output - http://codepad.org/uzUtehgT
Let me know what I am doing wrong with the for each loop.
Because the item elements are nested. $dom->getElementsByTagName( "item" ) gets all the item elements, including those lie within another item. That's not what you want.
I'd suggest using XPath for this kind of job.
Related
Why does not display the attribute html via xpath php
<?php
$content = '<div class="keep-me">Keep this div</div><div class="remove-me" id="test">Remove this div</div>';
$badClasses = array('');
$dom = new DOMDocument;
libxml_use_internal_errors(true);
$dom->loadHTML($content);
libxml_clear_errors();
$xPath = new DOMXpath($dom);
foreach($badClasses as $badClass){
$domNodeList = $xPath->query('//div[#class="remove-me"]/#id');
$domElemsToRemove = ''; // container of deleted elements
foreach ( $domNodeList as $domElement ) {
$domElemsToRemove .= $dom->saveHTML($domElement); // concat them
$domElement->parentNode->removeChild($domElement); // then remove
}
}
$content = $dom->saveHTML();
echo htmlentities($domElemsToRemove);
?>
Works - //div[#class="remove-me"] or //div[#class="remove-me"]/text()
Not working - //div[#class="remove-me"]/#id
Maybe there is a way easier
The XPath //div[#class="remove-me"]/#id is correct, but you need to just loop over the returned elements and add the nodeValue to a list of matching ID's...
$xPath = new DOMXpath($dom);
$domNodeList = $xPath->query('//div[#class="remove-me"]/#id');
$ids = []; // container of deleted elements
foreach ( $domNodeList as $domElement ) {
$ids[] = $domElement->nodeValue;
}
print_r($ids);
If the aim is to fetch the ID of any element with class "remove-me" as is how I interpret the question then perhaps you can try like this - untested btw...
.... other code before
$xp=new DOMXpath( $dom );
$col= $xp->query( '*[#class="remove-me"]' );
if( $col->length > 0 ){
foreach($col as $node){
$id=$node->hasAttribute('id') ? $node->getAttribute('id') : 'banana';
echo $id;
}
}
however looking at the code in the question suggests that you wish to delete nodes - in which case build an array of nodes ( nodelist ) and iterate through it from the end to the front - ie: backwards...
I am trying to add tag <input type="checkbox"> before every li that has class menu-item-has-children but the dom is updating only for the last item not all. The code is written below:
$dom = new DOMDocument();
$dom->loadHTML( $sanitized_menu );
$finder = new DOMXPath( $dom );
$inner_menus = $finder->query( "/html/body//li[ contains( #class, 'menu-item-has-children' ) ]");
// element to be added
$elem = $dom->createElement('input');
$elem_attr = $dom->createAttribute( 'type' );
$elem_attr->value = 'checkbox';
$elem->appendChild( $elem_attr );
$index = 0;
while( $index < $inner_menus->length ) {
$insert_val = $inner_menus->item( $index );
$insert_val->parentNode->insertBefore( $elem, $insert_val);
$index++;
}
$html = $dom->saveHTML();
print_r( $html );
You only create one input and then you append it multiple times.
Since an element can't exist in multiple places at once, that moves it.
Create the element inside the while loop.
Im parsing a xml file but im having some issues regarding a tag (":g"), i cant access the information, his content, the problem is when i try to get the categories, i have more than one category.
xml:
<item>
<g:id>4011700742288</g:id>
<title><![CDATA[4711 Acqua Colonia Blood Orange & Basil Eau de Cologne 170ml]]></title>
<link><![CDATA[https://url/asdasd.html]]></link>
<g:image_link><![CDATA[https://url/media/catalog/product/4/7/4711-acqua-colonia-blood-_2.jpg]]></g:image_link>
<g:price>34.86 EUR</g:price>
<g:product_type><![CDATA[Mulher]]></g:product_type>
<g:product_type><![CDATA[Homem]]></g:product_type>
<g:product_type><![CDATA[Unisexo]]></g:product_type>
</item>
I try getting the categories using for example:
$categories = $item->children('g', TRUE)->product_type;
But it only brings the first category, is not geting the rest of the categories.
Here above is my code example of how i get the data.
ex:
foreach($rss->channel->item as $item) {
$categories = $item->children('g', TRUE)->product_type;
// bringing in to array <content:encoded> items from SimpleXMLElement Object()
$content = xmlObjToArr($item->children('content', true)->encoded);
echo $categories . PHP_EOL;
return;
}
function xmlObjToArr($obj) {
$namespace = $obj->getDocNamespaces(true);
$namespace[NULL] = NULL;
$children = array();
$attributes = array();
$name = strtolower((string)$obj->getName());
$text = trim((string)$obj);
if( strlen($text) <= 0 ) {
$text = NULL;
}
// get info for all namespaces
if(is_object($obj)) {
foreach( $namespace as $ns=>$nsUrl ) {
// atributes
$objAttributes = $obj->attributes($ns, true);
foreach( $objAttributes as $attributeName => $attributeValue ) {
$attribName = strtolower(trim((string)$attributeName));
$attribVal = trim((string)$attributeValue);
if (!empty($ns)) {
$attribName = $ns . ':' . $attribName;
}
$attributes[$attribName] = $attribVal;
}
// children
$objChildren = $obj->children($ns, true);
foreach( $objChildren as $childName=>$child ) {
$childName = strtolower((string)$childName);
if( !empty($ns) ) {
$childName = $ns.':'.$childName;
}
$children[$childName][] = xmlObjToArr($child);
}
}
}
return array(
'name'=>$name,
'text'=>$text,
'attributes'=>$attributes,
'children'=>$children
);
}
Your code is correct.
$categories = $item->children('g', TRUE)->product_type;
This will set $categories to an object which gives you access to all the <g:product_type> elements.
Your problem is when you write:
echo $categories . PHP_EOL;
This displays the text content of a single XML element. Since $categories is a collection of multiple elements, SimpleXML guesses that you want the first one. In other words, it's equivalent to:
echo (string)$categories[0] . PHP_EOL;
Where (string) extracts the text content and is implied by echo, and [0] gets the first item in the collection.
Looping over the collection of elements works exactly how you'd expect a list to work - you use foreach:
foreach ( $categories as $cat ) {
echo $cat . PHP_EOL;
}
I'm stuck on something extremely simple.
Here is my xml feed:
http://xml.betfred.com/Horse-Racing-Daily.xml
Here is my code
<?php
function HRList5($viewbets) {
$xmlData = 'http://xml.betfred.com/Horse-Racing-Daily.xml';
$xml = simplexml_load_file($xmlData);
$curdate = date('d/m/Y');
$new_array = array();
foreach ($xml->event as $event) {
if($event->bettype->attributes()->bettypeid == $viewbets){//$_GET['evid']){
// $eventid = $_GET['eventid'];
// if ($limit == $c) {
// break;
// }
// $c++;
$eventd = substr($event->attributes()->{'date'},6,2);
$eventm = substr($event->attributes()->{'date'},4,2);
$eventy = substr($event->attributes()->{'date'},0,4);
$eventt = $event->attributes()->{'time'};
$eventid = $event->attributes()->{'eventid'};
$betname = $event->bettype->bet->attributes()->{'name'};
$bettypeid = $event->bettype->attributes()->{'bettypeid'};
$betprice = $event->bettype->bet->attributes()->{'price'};
$betid = $event->bettype->bet->attributes()->{'id'};
$new_array[$betname.$betid] = array(
'betname' => $betname,
'viewbets' => $viewbets,
'betid' => $betid,
'betname' => $betname,
'betprice' => $betprice,
'betpriceid' => $event->bettype->attributes()->{'betid'},
);
}
ksort($new_array);
$limit = 10;
$c = 0;
foreach ($new_array as $event_time => $event_data) {
// $racedate = $event_data['eventy'].$event_data['eventm'].$event_data['eventd'];
$today = date('Ymd');
//if($today == $racedate){
// if ($limit == $c) {
// break;
//}
//$c++;
$replace = array("/"," ");
// $eventname = str_replace($replace,'-', $event_data['eventname']);
//$venue = str_replace($replace,'-', $event_data['venue']);
echo "<div class=\"units-row unit-100\">
<div class=\"unit-20\" style=\"margin-left:0px;\">
".$event_data['betprice']."
</div>
<div class=\"unit-50\">
".$event_data['betname'].' - '.$event_data['betprice']."
</div>
<div class=\"unit-20\">
<img src=\"betnow.gif\" ><br />
</div>
</div>";
}
}//echo "<strong>View ALL Horse Races</strong> <strong>>></strong>";
//var_dump($event_data);
}
?>
Now basically the XML file contains a list of horse races that are happening today.
The page I call the function on also declares
<?php $viewbets = $_GET['EVID'];?>
Then where the function is called I have
<?php HRList5($viewbets);?>
I've just had a play around and now it displays the data in the first <bet> node
but the issue is it's not displaying them ALL, its just repeating the 1st one down the page.
I basically need the xml feed queried & if the event->bettype->attributes()->{'bettypeid'} == $viewbets I want the bet nodes repeated down the page.
I don't use simplexml so can offer no guidance with that - I would say however that to find the elements and attributes you need within the xml feed that you ought to use an XPath query. The following code will hopefully be of use in that respect, it probably has an easy translation into simplexml methods.
Edit: Rather than targeting each bet as the original xpath did which then caused issues, the following should be more useful. It targets the bettype and then processes the childnodes.
/* The `eid` to search for in the DOM document */
$eid=25573360.20;
/* create the DOM object & load the xml */
$dom=new DOMDocument;
$dom->load( 'http://xml.betfred.com/Horse-Racing-Daily.xml' );
/* Create a new XPath object */
$xp=new DOMXPath( $dom );
/* Search the DOM for nodes with particular attribute - bettypeid - use number function from XSLT to test */
$oCol=$xp->query('//event/bettype[ number( #bettypeid )="'.$eid.'" ]');
/* If the query was successful there should be a nodelist object to work with */
if( $oCol ){
foreach( $oCol as $node ) {
echo '
<h1>'.$node->parentNode->getAttribute('name').'</h1>
<h2>'.date('D, j F, Y',strtotime($node->getAttribute('bet-start-date'))).'</h2>';
foreach( $node->childNodes as $bet ){
echo "<div>Name: {$bet->getAttribute('name')} ID: {$bet->getAttribute('id')} Price: {$bet->getAttribute('price')}</div>";
}
}
} else {
echo 'XPath query failed';
}
$dom = $xp = $col = null;
Question
How can I remove empty xml tags in PHP?
Example:
$value1 = "2";
$value2 = "4";
$value3 = "";
xml = '<parentnode>
<tag1> ' .$value1. '</tag1>
<tag2> ' .$value2. '</tag2>
<tag3> ' .$value3. '</tag3>
</parentnode>';
XML Result:
<parentnode>
<tag1>2</tag1>
<tag2>4</tag2>
<tag3></tag3> // <- Empty tag
</parentnode>
What I want!
<parentnode>
<tag1>2</tag1>
<tag2>4</tag2>
</parentnode>
The XML without the empty tags like "tag3"
Thanks!
You can use XPath with the predicate not(node()) to select all elements that do not have child nodes.
<?php
$doc = new DOMDocument;
$doc->preserveWhiteSpace = false;
$doc->loadxml('<parentnode>
<tag1>2</tag1>
<tag2>4</tag2>
<tag3></tag3>
<tag2>4</tag2>
<tag3></tag3>
<tag2>4</tag2>
<tag3></tag3>
</parentnode>');
$xpath = new DOMXPath($doc);
foreach( $xpath->query('//*[not(node())]') as $node ) {
$node->parentNode->removeChild($node);
}
$doc->formatOutput = true;
echo $doc->savexml();
prints
<?xml version="1.0"?>
<parentnode>
<tag1>2</tag1>
<tag2>4</tag2>
<tag2>4</tag2>
<tag2>4</tag2>
</parentnode>
This works recursively and removes nodes that:
contain only spaces
do not have attributes
do not have child notes
// not(*) does not have children elements
// not(#*) does not have attributes
// text()[normalize-space()] nodes that include whitespace text
while (($node_list = $xpath->query('//*[not(*) and not(#*) and not(text()[normalize-space()])]')) && $node_list->length) {
foreach ($node_list as $node) {
$node->parentNode->removeChild($node);
}
}
$dom = new DOMDocument;
$dom->loadXML($xml);
$elements = $dom->getElementsByTagName('*');
foreach($elements as $element) {
if ( ! $element->hasChildNodes() OR $element->nodeValue == '') {
$element->parentNode->removeChild($element);
}
}
echo $dom->saveXML();
CodePad.
The solution that worked with my production PHP SimpleXMLElement object code, by using Xpath, was:
/*
* Remove empty (no children) and blank (no text) XML element nodes, but not an empty root element (/child::*).
* This does not work recursively; meaning after empty child elements are removed, parents are not reexamined.
*/
foreach( $this->xml->xpath('/child::*//*[not(*) and not(text()[normalize-space()])]') as $emptyElement ) {
unset( $emptyElement[0] );
}
Note that it is not required to use PHP DOM, DOMDocument, DOMXPath, or dom_import_simplexml().
//this is a recursively option
do {
$removed = false;
foreach( $this->xml->xpath('/child::*//*[not(*) and not(text()[normalize-space()])]') as $emptyElement ) {
unset( $emptyElement[0] );
$removed = true;
}
} while ($removed) ;
If you're going to be a lot of this, just do something like:
$value[] = "2";
$value[] = "4";
$value[] = "";
$xml = '<parentnode>';
for($i=1,$m=count($value); $i<$m+1; $i++)
$xml .= !empty($value[$i-1]) ? "<tag{$i}>{$value[$i-1]}</tag{$i}>" : null;
$xml .= '</parentnode>';
echo $xml;
Ideally though, you should probably use domdocument.