Convert CSV File to php array

csv_to_array.php

<?php

function csv_to_array(string $file, ?string $key_line = null, string $delimiter = ',', string $enclosure = '"', string $escape = '\\'): array
{
    if (!is_readable($file)) {
        throw new \InvalidArgumentException("The file {$file} doesn't exists or not readable.");
    }

    $titles = $content = [];

    if (false === ($handle = fopen($file, 'r'))) {
        return $content;
    }

    // Détection et suppression du BOM UTF8
    $bom = "\xEF\xBB\xBF";
    $firstLine = fgets($handle);

    if (str_starts_with($firstLine, $bom)) {
        $firstLine = substr($firstLine, 3);
    }

    // Analyser la première ligne pour les titres
    $data = str_getcsv($firstLine, $delimiter, $enclosure, $escape);
    foreach ($data as $index => $var) {
        $titles[$index] = trim($var);
    }

    // Intégration du contenu
    while (false !== ($data = fgetcsv($handle, 3000, $delimiter, $enclosure, $escape))) {
        // Récupérer le contenu
        $line = [];
        $row_content = 0;

        foreach ($data as $index => $var) {
            if (!isset($titles[$index])) {
                continue;
            }

            $var = trim($var);
            if (empty($var)) {
                $line[$titles[$index]] = null;
                continue;
            }
            $line[$titles[$index]] = $var;

            $row_content += mb_strlen($var);
        }

        // Vérifier que la ligne inscrite n'est pas vide
        if (!empty($row_content)) {
            if (!empty($key_line) && array_key_exists($key_line, $line)) {
                $content[$line[$key_line]] = $line;
            } else {
                $content[] = $line;
            }
        }
    }
    fclose($handle);

    return $content;
}