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Linux 5.14.0-427.33.1.el9_4.x86_64

PHP Version:

7.4.33

User:

infinio

Directory:

/home/infinio/public_html/moodle/lib/mlbackend/php/phpml/src/Phpml/Preprocessing

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✏️ Editing: ColumnFilter.php

<?php

declare(strict_types=1);

namespace Phpml\Preprocessing;

final class ColumnFilter implements Preprocessor
{
    /**
     * @var string[]
     */
    private $datasetColumns = [];

/**
     * @var string[]
     */
    private $filterColumns = [];

public function __construct(array $datasetColumns, array $filterColumns)
    {
        $this->datasetColumns = array_map(static function (string $column): string {
            return $column;
        }, $datasetColumns);
        $this->filterColumns = array_map(static function (string $column): string {
            return $column;
        }, $filterColumns);
    }

public function fit(array $samples, ?array $targets = null): void
    {
        //nothing to do
    }

public function transform(array &$samples, ?array &$targets = null): void
    {
        $keys = array_intersect($this->datasetColumns, $this->filterColumns);

foreach ($samples as &$sample) {
            $sample = array_values(array_intersect_key($sample, $keys));
        }
    }
}

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