Unset null values in array of DOM elements - php

Question

I am iterating trough array in php and I got result like:
It's a an array with DOM elements within a DOM Crawler library.
{
"data": [
{
"content": null,
"property": null
},
{
"content": "Build your communication strategy and unleash the effectiveness and efficiency of your storytelling",
"property": null
}
}
...
In my code:
$crawler = new Crawler(file_get_contents($url));
$items =$crawler->filter('meta');
$metaData = [];
foreach ($items as $item) {
$itemCrawler = new Crawler($item);
$metaData[] = [
'content' => $itemCrawler->eq(0)->attr('content'),
'property' => $itemCrawler->eq(0)->attr('property')
];
}
What I try to accomplish is to get rid of rows where both fields are NULL like first one (if there is one of the fileds, like second one than skip).
Tried with array_filter() but with no success.
return array_filter($metaData, 'strlen');

Answer 1

Not sure why the first answer wouldn't be accepted. It would be just a bit of tweaks to make it work.
In your loop
$itemCrawler = new Crawler($item);
$content = $itemCrawler->eq(0)->attr('content');
$property = $itemCrawler->eq(0)->attr('property');
if(!is_null($content) || !is_null($property)) {
$metaData[] = compact('content', 'property');
}
Or if you insist on using array_filter after getting the $metaData array
$filteredMetaData = array_filter($metaData, function($item) {
return !is_null($item['content']) || !is_null($item['property']);
});

Answer 2

Actually, array_filter() works for empty elements.
Even if the element values are blank, if the keys are there, the blank values will not be removed.
In the code:
$item Has two keys
So, add explicit conditions to check for blank elements and please modify the code like:
$data = [];
$items =$service->get('allData');
foreach ($items as $item) {
if (! empty($item['content']) && ! empty($item['property'])) {
$data[] = [
'content' => $item['content'],
'property' => $item['property]
];
}
}