PHP - How to merge foreach arrays into one loop

Question

Here is my code:

$url = "https://www.leaseweb.com/dedicated-servers/single-processor";

libxml_use_internal_errors(true); 
$doc = new DOMDocument();
$doc->loadHTMLFile($url);

$xpath = new DOMXpath($doc);

$n = $xpath->query('//td[@data-column-name="Model"]');
$r = $xpath->query('//td[@data-column-name="RAM"]');

foreach ($n as $entry) {
    $Name = $entry->nodeValue;
    $RAM  = $r->nodeValue;
    echo " $Name - RAM: $RAM<br>";
}

I successfully echo $Name but i can not get the value for $RAM because i do not have it in my array. My question is how i can add $r into this foreach loop and make it work ?

Thanks in advance!

foreach ($n as $key => $entry) { $Name = $entry->nodeValue; $RAM = $r[$key]->nodeValue; echo " $Name - RAM: $RAM<br>"; } — Mark Baker
– Mark Baker, Commented Aug 4, 2015 at 10:44
can you please tell me how data of $r is related to data of $n then i can help you. — Vinie
– Vinie, Commented Aug 4, 2015 at 11:02

MinusFour · Accepted Answer · 2015-08-04 12:17:08Z

1

PHP Documentation is kind of ambiguous at this point. DOMXPath::query returns a DOMNodeList which isn't really an Iterator nor does it seems to implement ArrayAccess but rather implements Traversable which doesn't have a particular signature that's helpful to traverse the object.

Here's something that comes to mind:

$item = 0;
foreach ($n as $entry) {
    $Name = $entry->nodeValue;
    $RAM  = $r->item($item)->nodeValue;
    echo " $Name - RAM: $RAM<br>";
    $item++;
}

Something else that might work:

$iterator = new IteratorIterator($r);
$iterator->rewind();
foreach ($n as $entry) {
    $Name = $entry->nodeValue;
    $node = $iterator->current();
    $RAM  = $node->nodeValue;
    $iterator->next();
    echo " $Name - RAM: $RAM<br>";
}

IteratorIterator class:

This iterator wrapper allows the conversion of anything that is Traversable into an Iterator. It is important to understand that most classes that do not implement Iterators have reasons as most likely they do not allow the full Iterator feature set. If so, techniques should be provided to prevent misuse, otherwise expect exceptions or fatal errors.

edited Aug 4, 2015 at 12:17

answered Aug 4, 2015 at 11:53

MinusFour

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1 Comment

Venelin Over a year ago

This is the only one working answer so far! Thank you so much!

Daimos · Accepted Answer · 2015-08-04 10:48:18Z

0

use $key variable inside loop

   foreach ($n as $key => $entry) {
        $Name = $entry->nodeValue;
        $RAM  = $r[$key]->nodeValue;
        echo " $Name - RAM: $RAM<br>";
    }

answered Aug 4, 2015 at 10:48

Daimos

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1 Comment

DKSan Over a year ago

Your blank screen could be a result of an error. Please check the errorlog

DKSan · Accepted Answer · 2015-08-04 11:11:56Z

0

You could try with current and next array functions (php doc)

libxml_use_internal_errors(true); 
$doc = new DOMDocument();
$doc->loadHTMLFile($url);

$xpath = new DOMXpath($doc);

$n = $xpath->query('//td[@data-column-name="Model"]');
$r = $xpath->query('//td[@data-column-name="RAM"]');
//Reset pointer to first element and assign to currR
$currR = reset($r);

foreach ($n as $entry) {
    $Name = $entry->nodeValue;
    $RAM  = $currR->nodeValue;
    echo " $Name - RAM: $RAM<br>";
    //Move pointer to next element and assign this to currR
    $currR = next($r);
}

answered Aug 4, 2015 at 11:11

DKSan

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1 Comment

Venelin Over a year ago

It is not working. The complete code is posted above in the edited question. You can now test it.

Vinie · Accepted Answer · 2015-08-04 11:14:21Z

0

$i=0;
foreach ($n as $entry) {
    $Name = $entry->nodeValue;
    $RAM  = $r[$i]->nodeValue;
    echo " $Name - RAM: $RAM<br>";
    $i++;
}

answered Aug 4, 2015 at 11:14

Vinie

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1 Comment

Vinie Over a year ago

if you can post print_r($r) then i can do some help

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