MIME types trait

MimeTypeTrait.php

<?php
namespace App\Traits;

trait MimeTypeTrait
{
    /**
     * MIME Types
     *
     * @link http://stackoverflow.com/questions/6654351/check-file-uploaded-is-in-csv-format#answer-13032788
     * @link http://www.rfc-editor.org/rfc/rfc3778.txt
     * @link http://filext.com/faq/office_mime_types.php
     * @var array
     */
    public static $mimeTypes = [
        'csv' => [
            'text/csv',
            'text/csv',
            'text/plain',
            'text/comma-separated-values',
            'text/anytext',
            'application/csv',
            'application/excel',
            'application/vnd.ms-excel',
            'application/vnd.msexcel',
            'application/octet-stream',
            'application/txt',
        ],
        'pdf' => [
            'application/pdf',
        ],
        'word' => [
            'application/msword',
            'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
            'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
            'application/vnd.ms-word.document.macroEnabled.12',
            'application/vnd.ms-word.template.macroEnabled.12',
        ],
        'excel' => [
            'application/vnd.ms-excel',
            'application/vnd.msexcel',
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
            'application/vnd.ms-excel.sheet.macroEnabled.12',
            'application/vnd.ms-excel.template.macroEnabled.12',
            'application/vnd.ms-excel.addin.macroEnabled.12',
            'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
        ]
    ];

    /**
     * Returns all defined MIME types.
     *
     * @param  string|array $types MIME type
     * @return array
     */
    public static function getMimeTypes($types = [])
    {
        $result = [];
        if (empty($types)) {
        	$types = ['csv', 'pdf', 'word', 'excel'];
        }

        if (is_string($types)) {
            $types = (array)$types;
        }

        foreach ($types as $type) {
            if (isset(static::$mimeTypes[$type])) {
                $result = array_merge($result, static::$mimeTypes[$type]);
            }
        }

        return $result;
    }
}