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<?php |
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|
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/** |
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* This file is part of the Nette Framework (https://nette.org) |
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* Copyright (c) 2004 David Grudl (https://davidgrudl.com) |
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*/ |
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declare (strict_types=1); |
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namespace Packetery\Nette\Utils; |
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|
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use Packetery\Nette; |
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class Helpers |
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{ |
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/** |
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* Executes a callback and returns the captured output as a string. |
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*/ |
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public static function capture(callable $func) : string |
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{ |
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\ob_start(function () { |
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}); |
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try { |
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$func(); |
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return \ob_get_clean(); |
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} catch (\Throwable $e) { |
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\ob_end_clean(); |
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throw $e; |
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} |
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} |
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/** |
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* Returns the last occurred PHP error or an empty string if no error occurred. Unlike error_get_last(), |
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* it is nit affected by the PHP directive html_errors and always returns text, not HTML. |
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*/ |
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public static function getLastError() : string |
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{ |
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$message = \error_get_last()['message'] ?? ''; |
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$message = \ini_get('html_errors') ? Html::htmlToText($message) : $message; |
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$message = \preg_replace('#^\\w+\\(.*?\\): #', '', $message); |
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return $message; |
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} |
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/** |
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* Converts false to null, does not change other values. |
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* @param mixed $value |
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* @return mixed |
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*/ |
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public static function falseToNull($value) |
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{ |
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return $value === \false ? null : $value; |
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} |
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/** |
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* Returns value clamped to the inclusive range of min and max. |
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* @param int|float $value |
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* @param int|float $min |
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* @param int|float $max |
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* @return int|float |
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*/ |
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public static function clamp($value, $min, $max) |
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{ |
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if ($min > $max) { |
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throw new \Packetery\Nette\InvalidArgumentException("Minimum ({$min}) is not less than maximum ({$max})."); |
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} |
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return \min(\max($value, $min), $max); |
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} |
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/** |
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* Looks for a string from possibilities that is most similar to value, but not the same (for 8-bit encoding). |
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* @param string[] $possibilities |
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*/ |
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public static function getSuggestion(array $possibilities, string $value) : ?string |
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{ |
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$best = null; |
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$min = (\strlen($value) / 4 + 1) * 10 + 0.1; |
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foreach (\array_unique($possibilities) as $item) { |
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if ($item !== $value && ($len = \levenshtein($item, $value, 10, 11, 10)) < $min) { |
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$min = $len; |
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$best = $item; |
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} |
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} |
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return $best; |
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} |
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} |
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