I have the following code at the moment:
$ip = '195.72.186.157';
$xmlDoc = new DOMDocument();
$xmlDoc->loadXML(file_get_contents('http://www.geoffmeierhans.com/services/geo-locator/locate/?ip='.$ip.'&output=xml'));
foreach($xmlDoc->getElementsByTagName('city') as $link) {
$links = array('text' => $link->nodeValue);
}
$city = $links['text'];
echo $city;
Is there a better way to get the city variable? Since there is only one tag called city a loop isn't really needed but I can't get it to work any other way
Well, you can use the length parameter to DomNodeList (what's returned by the getElementsByTagName call.
If you want only the first result:
$nodes = $xmlDoc->getElementsByTagName('city');
if ($nodes->length > 0) {
$city = $nodes->item(0)->nodeValue;
} else {
$city = ''; // There is no city element
}
Related
I've been trying unsuccessfully with PHP to loop through two XML files and print the result to the screen. The aim is to take a country's name and output its regions/states/provinces as the case may be.
The first block of code successfully prints all the countries but the loop through both files gives me a blank screen.
The countries file is in the format:
<row>
<id>6</id>
<name>Andorra</name>
<iso2>AD</iso2>
<phone_code>376</phone_code>
</row>
And the states.xml:
<row>
<id>488</id>
<name>Andorra la Vella</name>
<country_id>6</country_id>
<country_code>AD</country_code>
<state_code>07</state_code>
</row>
so that country_id = id.
This gives a perfect list of countries:
$xml = simplexml_load_file("countries.xml");
$xml1 = simplexml_load_file("states.xml");
foreach($xml->children() as $key => $children) {
print((string)$children->name); echo "<br>";
}
This gives me a blank screen except for the HTML stuff on the page:
$xml = simplexml_load_file("countries.xml");
$xml1 = simplexml_load_file("states.xml");
$s = "Jamaica";
foreach($xml->children() as $child) {
foreach($xml1->children() as $child2){
if ($child->id == $child2->country_id && $child->name == $s) {
print((string)$child2->name);
echo "<br>";
}
}
}
Where have I gone wrong?
Thanks.
I suspect your problem is not casting the name to a string before doing your comparison. But why are you starting the second loop before checking if it's needed? You're looping through every single item in states.xml needlessly.
$countries = simplexml_load_file("countries.xml");
$states = simplexml_load_file("states.xml");
$search = "Jamaica";
foreach($countries->children() as $country) {
if ((string)$country->name !== $search) {
continue;
}
foreach($states->children() as $state) {
if ((string)$country->id === (string)$state->country_id) {
echo (string)$state->name . "<br/>";
}
}
}
Also, note that naming your variables in a descriptive manner makes it much easier to figure out what's going on with code.
You could probably get rid of the loops altogether using an XPath query to match the sibling value. I don't use SimpleXML, but here's what it would look like with DomDocument:
$search = "Jamaica";
$countries = new DomDocument();
$countries->load("countries.xml");
$xpath = new DomXPath($countries);
$country = $xpath->query("//row[name/text() = '$search']/id/text()");
$country_id = $country[0]->nodeValue;
$states = new DomDocument();
$states->load("states.xml");
$xpath = new DomXPath($states);
$states = $xpath->query("//row[country_id/text() = '$country_id']/name/text()");
foreach ($states as $state) {
echo $state->nodeValue . "<br/>";
}
I'm stuck on something extremely simple.
Here is my xml feed:
http://xml.betfred.com/Horse-Racing-Daily.xml
Here is my code
<?php
function HRList5($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;
I'm working on a function that gets the whole content of the style.css file, and returns only the CSS rules that needed by the currently viewed page (it will be cached too, so the function only runs when the page was changed).
My problem is with parsing the DOM (I'm never doing it before with PHP DOM). I have the following function, but $element->tagname returns NULL. I also want to check the element's "class" attribute, but I'm stuck here.
function get_rules($html) {
$arr = array();
$dom = new DOMDocument();
$dom->loadHTML($html);
foreach($dom->getElementsByTagName('*') as $element ){
$arr[sizeof($arr)] = $element->tagname;
}
return array_unique($arr);
}
What can I do? How can I get all of the DOM elements tag name, and class from HTML?
Because tagname should be an undefined index because its supposed to be tagName (camel cased).
function get_rules($html) {
$arr = array();
$dom = new DOMDocument();
$dom->loadHTML($html);
foreach($dom->getElementsByTagName('*') as $element ){
$e = array();
$e['tagName'] = $element->tagName; // tagName not tagname
// get all elements attributes
foreach($element->attributes as $attr) {
$attrs = array();
$attrs['name'] = $attr->nodeName;
$attrs['value'] = $attr->nodeValue;
$e['attributes'][] = $attrs;
}
$arr[] = $e;
}
return $arr;
}
Simple Output
I have an XML schema that looks as follows:
<xml>
<user id="1">
<first_name>Bill</first_name>
<last_name>Steve</last_name>
<phone_numbers>
<work>xxx-xxx-xxxx</work>
<home>xxx-xxx-xxxx</home>
</phone_numbers>
</user>
<user id="2">
........
</user>
</xml>
Im working on parsing all of this information into PHP using DOM. Ex.
$userInfo = $doc->getElementsByTagName( "user" );
foreach($userInfo as $row)
{
$first_name = $row->getElementsByTagName("first_name");
}
When I try to nest this to select the phone numbers however I get an error. I've tried using XPath to select the phone numbers with equal problems. I tried something along the lines of
$userInfo = $doc->getElementsByTagName( "user" );
foreach($userInfo as $row)
{
$phoneInfo = $row->getElementsByTagName("phone_numbers");
foreach($phoneInfo as $row2)
{
$work = $row2->getElementsByTagName("work");
}
}
Im curious if Im doing something fundamentally wrong, or how to get this going. I've been tearing my hair out for a few hours now.
You can't get the value directly from a DOMNodeList Object, try this :
$userInfo = $doc->getElementsByTagName( "user" );
foreach($userInfo as $row)
{
$phoneInfo = $row->getElementsByTagName("phone_numbers");
foreach($phoneInfo as $row2)
{
// get the value from the first child
$work = $row2->getElementsByTagName("work")->item(0)->nodeValue;
$home = $row2->getElementsByTagName("home")->item(0)->nodeValue;
}
}
Well, you could switch it to SimpleXml which makes this type of parsing easier:
$userInfo = $doc->getElementsByTagName( "user" );
foreach ($userInfo as $user) {
$node = simplexml_import_dom($user);
$id = (string) $node['id'];
$first = (string) $node->first_name;
$last = (string) $node->last_name;
$workPhone = (string) $node->phone_numbers->work;
$homePhone = (string) $node->phone_numbers->home;
}
Now, in DomDocument, you could do this by using DomXpath:
$userInfo = $doc->getElementsByTagName( "user" );
$xpath = new DomXpath($doc);
foreach ($userInfo as $user) {
$id = $user->getAttribute('id');
$first = $xpath->query('//first_name', $user)->item(0)->textContent;
$last = $xpath->query('//last_name', $user)->item(0)->textContent;
$work = $xpath->query('//phone_numbers/work', $user)->item(0)->textContent;
$home = $xpath->query('//phone_numbers/home', $user)->item(0)->textContent;
}
Note that the above code (both parts) require that the format is exactly that. If you have conditionals, you might want to change it to something like this (the firstname conditional only):
$userInfo = $doc->getElementsByTagName( "user" );
$xpath = new DomXpath($doc);
foreach ($userInfo as $user) {
$id = $user->getAttribute('id');
$firstQuery = $xpath->query('//first_name', $user);
if ($firstQuery->length > 0) {
$first = $firstQuery->item(0)->textContent;
} else {
$first = '';
}
}
I'm having difficulty extracting a single node value from a nodelist.
My code takes an xml file which holds several fields, some containing text, file paths and full image names with extensions.
I run an expath query over it, looking for the node item with a certain id. It then stores the matched node item and saves it as $oldnode
Now my problem is trying to extract a value from that $oldnode. I have tried to var_dump($oldnode) and print_r($oldnode) but it returns the following: "object(DOMElement)#8 (0) { } "
Im guessing the $oldnode variable is an object, but how do I access it?
I am able to echo out the whole node list by using: echo $oldnode->nodeValue;
This displays all the nodes in the list.
Here is the code which handles the xml file. line 6 is the line in question...
$xpathexp = "//item[#id=". $updateID ."]";
$xpath = new DOMXpath($xml);
$nodelist = $xpath->query($xpathexp);
if((is_null($nodelist)) || (! is_numeric($nodelist))) {
$oldnode = $nodelist->item(0);
echo $oldnode->nodeValue;
//$imgUpload = strchr($oldnode->nodeValue, ' ');
//$imgUpload = strrchr($imgUpload, '/');
//explode('/',$imgUpload);
//$imgUpload = trim($imgUpload);
$newItem = new DomDocument;
$item_node = $newItem ->createElement('item');
//Create attribute on the node as well
$item_node ->setAttribute("id", $updateID);
$largeImageText = $newItem->createElement('largeImgText');
$largeImageText->appendChild( $newItem->createCDATASection($largeImgText));
$item_node->appendChild($largeImageText);
$urlANode = $newItem->createElement('urlA');
$urlANode->appendChild( $newItem->createCDATASection($urlA));
$item_node->appendChild($urlANode);
$largeImg = $newItem->createElement('largeImg');
$largeImg->appendChild( $newItem->createCDATASection($imgUpload));
$item_node->appendChild($largeImg);
$thumbnailTextNode = $newItem->createElement('thumbnailText');
$thumbnailTextNode->appendChild( $newItem->createCDATASection($thumbnailText));
$item_node->appendChild($thumbnailTextNode);
$urlB = $newItem->createElement('urlB');
$urlB->appendChild( $newItem->createCDATASection($urlA));
$item_node->appendChild($urlB);
$thumbnailImg = $newItem->createElement('thumbnailImg');
$thumbnailImg->appendChild( $newItem->createCDATASection(basename($_FILES['thumbnailImg']['name'])));
$item_node->appendChild($thumbnailImg);
$newItem->appendChild($item_node);
$newnode = $xml->importNode($newItem->documentElement, true);
// Replace
$oldnode->parentNode->replaceChild($newnode, $oldnode);
// Display
$xml->save($xmlFileData);
//header('Location: index.php?a=112&id=5');
Any help would be great.
Thanks
Wasn't it supposed to be echo $oldnode->firstChild->nodeValue;? I remember this because technically you need the value from the text node.. but I might be mistaken, it's been a while. You could give it a try?
After our discussion in the comments on this answer, I came up with this solution. I'm not sure if it can be done cleaner, perhaps. But it should work.
$nodelist = $xpath->query($xpathexp);
if((is_null($nodelist)) || (! is_numeric($nodelist))) {
$oldnode = $nodelist->item(0);
$largeImg = null;
$thumbnailImg = null;
foreach( $oldnode->childNodes as $node ) {
if( $node->nodeName == "largeImg" ) {
$largeImg = $node->nodeValue;
} else if( $node->nodeName == "thumbnailImg" ) {
$thumbnailImg = $node->nodeValue;
}
}
var_dump($largeImg);
var_dump($thumbnailImg);
}
You could also use getElementsByTagName on the $oldnode, then see if it found anything (and if a node was found, $oldnode->getElementsByTagName("thumbnailImg")->item(0)->nodeValue). Which might be cleaner then looping through them.