CODEWITHSUNDEEP
phparrays
Venelin
Venelin

Reputation: 3308

PHP - How to merge foreach arrays into one loop

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!

Upvotes: 1

Views: 80

Answers (4)

MinusFour
MinusFour

Reputation: 14423

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.

Upvotes: 1

Vinie
Vinie

Reputation: 2993

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

Upvotes: 0

DKSan
DKSan

Reputation: 4197

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);
}

Upvotes: 0

Daimos
Daimos

Reputation: 1473

use $key variable inside loop

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

Upvotes: 0

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