Only show items with a particular criteria in an array - php

Question

I am trying to show only items that meet a certain criteria in an array. At the moment I am outputting everything in the array.
What I've got so far:
$records = $d->get("FoundCount");
$result = array();
for($i = 1; $ <= $record; $i++){
// various array components
$show_published = $d->field(show_published); //this is the variable from the DB that will determine if the item is shown on the page. Yes/no string.
if($show_published == 'Yes'){
$results[] = new Result(//various array components, $show_published, //more things);
}
This seems to output all items, including the ones labeled as 'No' .
Any guidance would be great. I have only been using php for a few months now.

Answer 1

I'm not sure if you're familiar with composer and how to install / use php packages.
If you are, you can add illuminate/support package as a dependency for your project and use its Collection to filter records - something along the lines of:
use Illuminate\Support\Collection;
$collection = new Collection($records);
$outputArray = $collection->filter(function($object) {
return (string) $object->field('show_published') === 'Yes';
})->toArray();
https://laravel.com/docs/5.5/collections
After this, the $outputArray will contain only records that have show_published flag set to Yes.
Alternatively you could use php's native function array_filter in pretty much the same manner:
$outputArray = array_filter($records, function($object) {
return (string) $object->field('show_published') === 'Yes';
});
http://php.net/manual/en/function.array-filter.php

Answer 2

Here's a simple example on how to create a new filtered array based on the criteria of strings starting with the character 'b'. I'm not sure what your criteria is but you could certainly take this approach and modify it to suit your needs.
//Original array of things that are un-filtered
$oldArray = array("Baseball", "Basketball", "Bear", "Salmon", "Swordfish");
//An empty filtered array that we will populate in the loop below, based on our criteria.
$filteredArray = array();
foreach($oldArray as $arrayValue) {
//Our criteria is to only add strings to our
//filtered array that start with the letter 'B'
if($arrayValue[0] == "B")
{
array_push($filteredArray, $arrayValue);
}
}
//Our filtered array will only display
//our 3 string items that start with the character 'B'
print_r($filteredArray);
Hope it helps! If not, feel free to reach out.