Subversion-Projekte lars-tiefland.laravel_shop

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Utils;

use Nette;


class Helpers
{
        /**
         * Executes a callback and returns the captured output as a string.
         */
        public static function capture(callable $func): string
        {
                ob_start(function () {});
                try {
                        $func();
                        return ob_get_clean();
                } catch (\Throwable $e) {
                        ob_end_clean();
                        throw $e;
                }
        }


        /**
         * Returns the last occurred PHP error or an empty string if no error occurred. Unlike error_get_last(),
         * it is nit affected by the PHP directive html_errors and always returns text, not HTML.
         */
        public static function getLastError(): string
        {
                $message = error_get_last()['message'] ?? '';
                $message = ini_get('html_errors') ? Html::htmlToText($message) : $message;
                $message = preg_replace('#^\w+\(.*?\): #', '', $message);
                return $message;
        }


        /**
         * Converts false to null, does not change other values.
         * @param  mixed  $value
         * @return mixed
         */
        public static function falseToNull($value)
        {
                return $value === false ? null : $value;
        }


        /**
         * Returns value clamped to the inclusive range of min and max.
         * @param  int|float  $value
         * @param  int|float  $min
         * @param  int|float  $max
         * @return int|float
         */
        public static function clamp($value, $min, $max)
        {
                if ($min > $max) {
                        throw new Nette\InvalidArgumentException("Minimum ($min) is not less than maximum ($max).");
                }

                return min(max($value, $min), $max);
        }


        /**
         * Looks for a string from possibilities that is most similar to value, but not the same (for 8-bit encoding).
         * @param  string[]  $possibilities
         */
        public static function getSuggestion(array $possibilities, string $value): ?string
        {
                $best = null;
                $min = (strlen($value) / 4 + 1) * 10 + .1;
                foreach (array_unique($possibilities) as $item) {
                        if ($item !== $value && ($len = levenshtein($item, $value, 10, 11, 10)) < $min) {
                                $min = $len;
                                $best = $item;
                        }
                }

                return $best;
        }
}