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Editing: Php83.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Polyfill\Php83;

/**
 * @author Ion Bazan <ion.bazan@gmail.com>
 * @author Pierre Ambroise <pierre27.ambroise@gmail.com>
 *
 * @internal
 */
final class Php83
{
    private const JSON_MAX_DEPTH = 0x7FFFFFFF; // see https://www.php.net/manual/en/function.json-decode.php

public static function json_validate(string $json, int $depth = 512, int $flags = 0): bool
    {
        if (0 !== $flags && \defined('JSON_INVALID_UTF8_IGNORE') && \JSON_INVALID_UTF8_IGNORE !== $flags) {
            throw new \ValueError('json_validate(): Argument #3 ($flags) must be a valid flag (allowed flags: JSON_INVALID_UTF8_IGNORE)');
        }

if ($depth <= 0) {
            throw new \ValueError('json_validate(): Argument #2 ($depth) must be greater than 0');
        }

if ($depth > self::JSON_MAX_DEPTH) {
            throw new \ValueError(sprintf('json_validate(): Argument #2 ($depth) must be less than %d', self::JSON_MAX_DEPTH));
        }

json_decode($json, true, $depth, $flags);

return \JSON_ERROR_NONE === json_last_error();
    }

public static function mb_str_pad(string $string, int $length, string $pad_string = ' ', int $pad_type = \STR_PAD_RIGHT, ?string $encoding = null): string
    {
        if (!\in_array($pad_type, [\STR_PAD_RIGHT, \STR_PAD_LEFT, \STR_PAD_BOTH], true)) {
            throw new \ValueError('mb_str_pad(): Argument #4 ($pad_type) must be STR_PAD_LEFT, STR_PAD_RIGHT, or STR_PAD_BOTH');
        }

if (null === $encoding) {
            $encoding = mb_internal_encoding();
        }

try {
            $validEncoding = @mb_check_encoding('', $encoding);
        } catch (\ValueError $e) {
            throw new \ValueError(sprintf('mb_str_pad(): Argument #5 ($encoding) must be a valid encoding, "%s" given', $encoding));
        }

// BC for PHP 7.3 and lower
        if (!$validEncoding) {
            throw new \ValueError(sprintf('mb_str_pad(): Argument #5 ($encoding) must be a valid encoding, "%s" given', $encoding));
        }

if (mb_strlen($pad_string, $encoding) <= 0) {
            throw new \ValueError('mb_str_pad(): Argument #3 ($pad_string) must be a non-empty string');
        }

$paddingRequired = $length - mb_strlen($string, $encoding);

if ($paddingRequired < 1) {
            return $string;
        }

switch ($pad_type) {
            case \STR_PAD_LEFT:
                return mb_substr(str_repeat($pad_string, $paddingRequired), 0, $paddingRequired, $encoding).$string;
            case \STR_PAD_RIGHT:
                return $string.mb_substr(str_repeat($pad_string, $paddingRequired), 0, $paddingRequired, $encoding);
            default:
                $leftPaddingLength = floor($paddingRequired / 2);
                $rightPaddingLength = $paddingRequired - $leftPaddingLength;

return mb_substr(str_repeat($pad_string, $leftPaddingLength), 0, $leftPaddingLength, $encoding).$string.mb_substr(str_repeat($pad_string, $rightPaddingLength), 0, $rightPaddingLength, $encoding);
        }
    }

public static function str_increment(string $string): string
    {
        if ('' === $string) {
            throw new \ValueError('str_increment(): Argument #1 ($string) cannot be empty');
        }

if (!preg_match('/^[a-zA-Z0-9]+$/', $string)) {
            throw new \ValueError('str_increment(): Argument #1 ($string) must be composed only of alphanumeric ASCII characters');
        }

if (is_numeric($string)) {
            $offset = stripos($string, 'e');
            if (false !== $offset) {
                $char = $string[$offset];
                ++$char;
                $string[$offset] = $char;
                ++$string;

switch ($string[$offset]) {
                    case 'f':
                        $string[$offset] = 'e';
                        break;
                    case 'F':
                        $string[$offset] = 'E';
                        break;
                    case 'g':
                        $string[$offset] = 'f';
                        break;
                    case 'G':
                        $string[$offset] = 'F';
                        break;
                }

return $string;
            }
        }

return ++$string;
    }

public static function str_decrement(string $string): string
    {
        if ('' === $string) {
            throw new \ValueError('str_decrement(): Argument #1 ($string) cannot be empty');
        }

if (!preg_match('/^[a-zA-Z0-9]+$/', $string)) {
            throw new \ValueError('str_decrement(): Argument #1 ($string) must be composed only of alphanumeric ASCII characters');
        }

if (preg_match('/\A(?:0[aA0]?|[aA])\z/', $string)) {
            throw new \ValueError(sprintf('str_decrement(): Argument #1 ($string) "%s" is out of decrement range', $string));
        }

if (!\in_array(substr($string, -1), ['A', 'a', '0'], true)) {
            return implode('', \array_slice(str_split($string), 0, -1)).\chr(\ord(substr($string, -1)) - 1);
        }

$carry = '';
        $decremented = '';

for ($i = \strlen($string) - 1; $i >= 0; --$i) {
            $char = $string[$i];

switch ($char) {
                case 'A':
                    if ('' !== $carry) {
                        $decremented = $carry.$decremented;
                        $carry = '';
                    }
                    $carry = 'Z';

break;
                case 'a':
                    if ('' !== $carry) {
                        $decremented = $carry.$decremented;
                        $carry = '';
                    }
                    $carry = 'z';

break;
                case '0':
                    if ('' !== $carry) {
                        $decremented = $carry.$decremented;
                        $carry = '';
                    }
                    $carry = '9';

break;
                case '1':
                    if ('' !== $carry) {
                        $decremented = $carry.$decremented;
                        $carry = '';
                    }

break;
                default:
                    if ('' !== $carry) {
                        $decremented = $carry.$decremented;
                        $carry = '';
                    }

if (!\in_array($char, ['A', 'a', '0'], true)) {
                        $decremented = \chr(\ord($char) - 1).$decremented;
                    }
            }
        }

return $decremented;
    }
}

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