/home/kueuepay/public_html/vendor/nette/utils/src/Utils/Strings.php
<?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 JetBrains\PhpStorm\Language;
use Nette;
use function is_array, is_object, strlen;


/**
 * String tools library.
 */
class Strings
{
	use Nette\StaticClass;

	public const TrimCharacters = " \t\n\r\0\x0B\u{A0}\u{2000}\u{2001}\u{2002}\u{2003}\u{2004}\u{2005}\u{2006}\u{2007}\u{2008}\u{2009}\u{200A}\u{200B}";

	/** @deprecated use Strings::TrimCharacters */
	public const TRIM_CHARACTERS = self::TrimCharacters;


	/**
	 * @deprecated use Nette\Utils\Validator::isUnicode()
	 */
	public static function checkEncoding(string $s): bool
	{
		return $s === self::fixEncoding($s);
	}


	/**
	 * Removes all invalid UTF-8 characters from a string.
	 */
	public static function fixEncoding(string $s): string
	{
		// removes xD800-xDFFF, x110000 and higher
		return htmlspecialchars_decode(htmlspecialchars($s, ENT_NOQUOTES | ENT_IGNORE, 'UTF-8'), ENT_NOQUOTES);
	}


	/**
	 * Returns a specific character in UTF-8 from code point (number in range 0x0000..D7FF or 0xE000..10FFFF).
	 * @throws Nette\InvalidArgumentException if code point is not in valid range
	 */
	public static function chr(int $code): string
	{
		if ($code < 0 || ($code >= 0xD800 && $code <= 0xDFFF) || $code > 0x10FFFF) {
			throw new Nette\InvalidArgumentException('Code point must be in range 0x0 to 0xD7FF or 0xE000 to 0x10FFFF.');
		} elseif (!extension_loaded('iconv')) {
			throw new Nette\NotSupportedException(__METHOD__ . '() requires ICONV extension that is not loaded.');
		}

		return iconv('UTF-32BE', 'UTF-8//IGNORE', pack('N', $code));
	}


	/**
	 * Returns a code point of specific character in UTF-8 (number in range 0x0000..D7FF or 0xE000..10FFFF).
	 */
	public static function ord(string $c): int
	{
		if (!extension_loaded('iconv')) {
			throw new Nette\NotSupportedException(__METHOD__ . '() requires ICONV extension that is not loaded.');
		}

		$tmp = iconv('UTF-8', 'UTF-32BE//IGNORE', $c);
		if (!$tmp) {
			throw new Nette\InvalidArgumentException('Invalid UTF-8 character "' . ($c === '' ? '' : '\x' . strtoupper(bin2hex($c))) . '".');
		}

		return unpack('N', $tmp)[1];
	}


	/**
	 * @deprecated use str_starts_with()
	 */
	public static function startsWith(string $haystack, string $needle): bool
	{
		return str_starts_with($haystack, $needle);
	}


	/**
	 * @deprecated use str_ends_with()
	 */
	public static function endsWith(string $haystack, string $needle): bool
	{
		return str_ends_with($haystack, $needle);
	}


	/**
	 * @deprecated use str_contains()
	 */
	public static function contains(string $haystack, string $needle): bool
	{
		return str_contains($haystack, $needle);
	}


	/**
	 * Returns a part of UTF-8 string specified by starting position and length. If start is negative,
	 * the returned string will start at the start'th character from the end of string.
	 */
	public static function substring(string $s, int $start, ?int $length = null): string
	{
		if (function_exists('mb_substr')) {
			return mb_substr($s, $start, $length, 'UTF-8'); // MB is much faster
		} elseif (!extension_loaded('iconv')) {
			throw new Nette\NotSupportedException(__METHOD__ . '() requires extension ICONV or MBSTRING, neither is loaded.');
		} elseif ($length === null) {
			$length = self::length($s);
		} elseif ($start < 0 && $length < 0) {
			$start += self::length($s); // unifies iconv_substr behavior with mb_substr
		}

		return iconv_substr($s, $start, $length, 'UTF-8');
	}


	/**
	 * Removes control characters, normalizes line breaks to `\n`, removes leading and trailing blank lines,
	 * trims end spaces on lines, normalizes UTF-8 to the normal form of NFC.
	 */
	public static function normalize(string $s): string
	{
		// convert to compressed normal form (NFC)
		if (class_exists('Normalizer', false) && ($n = \Normalizer::normalize($s, \Normalizer::FORM_C)) !== false) {
			$s = $n;
		}

		$s = self::unixNewLines($s);

		// remove control characters; leave \t + \n
		$s = self::pcre('preg_replace', ['#[\x00-\x08\x0B-\x1F\x7F-\x9F]+#u', '', $s]);

		// right trim
		$s = self::pcre('preg_replace', ['#[\t ]+$#m', '', $s]);

		// leading and trailing blank lines
		$s = trim($s, "\n");

		return $s;
	}


	/** @deprecated use Strings::unixNewLines() */
	public static function normalizeNewLines(string $s): string
	{
		return self::unixNewLines($s);
	}


	/**
	 * Converts line endings to \n used on Unix-like systems.
	 * Line endings are: \n, \r, \r\n, U+2028 line separator, U+2029 paragraph separator.
	 */
	public static function unixNewLines(string $s): string
	{
		return preg_replace("~\r\n?|\u{2028}|\u{2029}~", "\n", $s);
	}


	/**
	 * Converts line endings to platform-specific, i.e. \r\n on Windows and \n elsewhere.
	 * Line endings are: \n, \r, \r\n, U+2028 line separator, U+2029 paragraph separator.
	 */
	public static function platformNewLines(string $s): string
	{
		return preg_replace("~\r\n?|\n|\u{2028}|\u{2029}~", PHP_EOL, $s);
	}


	/**
	 * Converts UTF-8 string to ASCII, ie removes diacritics etc.
	 */
	public static function toAscii(string $s): string
	{
		$iconv = defined('ICONV_IMPL') ? trim(ICONV_IMPL, '"\'') : null;
		static $transliterator = null;
		if ($transliterator === null) {
			if (class_exists('Transliterator', false)) {
				$transliterator = \Transliterator::create('Any-Latin; Latin-ASCII');
			} else {
				trigger_error(__METHOD__ . "(): it is recommended to enable PHP extensions 'intl'.", E_USER_NOTICE);
				$transliterator = false;
			}
		}

		// remove control characters and check UTF-8 validity
		$s = self::pcre('preg_replace', ['#[^\x09\x0A\x0D\x20-\x7E\xA0-\x{2FF}\x{370}-\x{10FFFF}]#u', '', $s]);

		// transliteration (by Transliterator and iconv) is not optimal, replace some characters directly
		$s = strtr($s, ["\u{201E}" => '"', "\u{201C}" => '"', "\u{201D}" => '"', "\u{201A}" => "'", "\u{2018}" => "'", "\u{2019}" => "'", "\u{B0}" => '^', "\u{42F}" => 'Ya', "\u{44F}" => 'ya', "\u{42E}" => 'Yu', "\u{44E}" => 'yu', "\u{c4}" => 'Ae', "\u{d6}" => 'Oe', "\u{dc}" => 'Ue', "\u{1e9e}" => 'Ss', "\u{e4}" => 'ae', "\u{f6}" => 'oe', "\u{fc}" => 'ue', "\u{df}" => 'ss']); // „ “ ” ‚ ‘ ’ ° Я я Ю ю Ä Ö Ü ẞ ä ö ü ß
		if ($iconv !== 'libiconv') {
			$s = strtr($s, ["\u{AE}" => '(R)', "\u{A9}" => '(c)', "\u{2026}" => '...', "\u{AB}" => '<<', "\u{BB}" => '>>', "\u{A3}" => 'lb', "\u{A5}" => 'yen', "\u{B2}" => '^2', "\u{B3}" => '^3', "\u{B5}" => 'u', "\u{B9}" => '^1', "\u{BA}" => 'o', "\u{BF}" => '?', "\u{2CA}" => "'", "\u{2CD}" => '_', "\u{2DD}" => '"', "\u{1FEF}" => '', "\u{20AC}" => 'EUR', "\u{2122}" => 'TM', "\u{212E}" => 'e', "\u{2190}" => '<-', "\u{2191}" => '^', "\u{2192}" => '->', "\u{2193}" => 'V', "\u{2194}" => '<->']); // ® © … « » £ ¥ ² ³ µ ¹ º ¿ ˊ ˍ ˝ ` € ™ ℮ ← ↑ → ↓ ↔
		}

		if ($transliterator) {
			$s = $transliterator->transliterate($s);
			// use iconv because The transliterator leaves some characters out of ASCII, eg → ʾ
			if ($iconv === 'glibc') {
				$s = strtr($s, '?', "\x01"); // temporarily hide ? to distinguish them from the garbage that iconv creates
				$s = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $s);
				$s = str_replace(['?', "\x01"], ['', '?'], $s); // remove garbage and restore ? characters
			} elseif ($iconv === 'libiconv') {
				$s = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $s);
			} else { // null or 'unknown' (#216)
				$s = self::pcre('preg_replace', ['#[^\x00-\x7F]++#', '', $s]); // remove non-ascii chars
			}
		} elseif ($iconv === 'glibc' || $iconv === 'libiconv') {
			// temporarily hide these characters to distinguish them from the garbage that iconv creates
			$s = strtr($s, '`\'"^~?', "\x01\x02\x03\x04\x05\x06");
			if ($iconv === 'glibc') {
				// glibc implementation is very limited. transliterate into Windows-1250 and then into ASCII, so most Eastern European characters are preserved
				$s = iconv('UTF-8', 'WINDOWS-1250//TRANSLIT//IGNORE', $s);
				$s = strtr(
					$s,
					"\xa5\xa3\xbc\x8c\xa7\x8a\xaa\x8d\x8f\x8e\xaf\xb9\xb3\xbe\x9c\x9a\xba\x9d\x9f\x9e\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf8\xf9\xfa\xfb\xfc\xfd\xfe\x96\xa0\x8b\x97\x9b\xa6\xad\xb7",
					'ALLSSSSTZZZallssstzzzRAAAALCCCEEEEIIDDNNOOOOxRUUUUYTsraaaalccceeeeiiddnnooooruuuuyt- <->|-.',
				);
				$s = self::pcre('preg_replace', ['#[^\x00-\x7F]++#', '', $s]);
			} else {
				$s = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $s);
			}

			// remove garbage that iconv creates during transliteration (eg Ý -> Y')
			$s = str_replace(['`', "'", '"', '^', '~', '?'], '', $s);
			// restore temporarily hidden characters
			$s = strtr($s, "\x01\x02\x03\x04\x05\x06", '`\'"^~?');
		} else {
			$s = self::pcre('preg_replace', ['#[^\x00-\x7F]++#', '', $s]); // remove non-ascii chars
		}

		return $s;
	}


	/**
	 * Modifies the UTF-8 string to the form used in the URL, ie removes diacritics and replaces all characters
	 * except letters of the English alphabet and numbers with a hyphens.
	 */
	public static function webalize(string $s, ?string $charlist = null, bool $lower = true): string
	{
		$s = self::toAscii($s);
		if ($lower) {
			$s = strtolower($s);
		}

		$s = self::pcre('preg_replace', ['#[^a-z0-9' . ($charlist !== null ? preg_quote($charlist, '#') : '') . ']+#i', '-', $s]);
		$s = trim($s, '-');
		return $s;
	}


	/**
	 * Truncates a UTF-8 string to given maximal length, while trying not to split whole words. Only if the string is truncated,
	 * an ellipsis (or something else set with third argument) is appended to the string.
	 */
	public static function truncate(string $s, int $maxLen, string $append = "\u{2026}"): string
	{
		if (self::length($s) > $maxLen) {
			$maxLen -= self::length($append);
			if ($maxLen < 1) {
				return $append;

			} elseif ($matches = self::match($s, '#^.{1,' . $maxLen . '}(?=[\s\x00-/:-@\[-`{-~])#us')) {
				return $matches[0] . $append;

			} else {
				return self::substring($s, 0, $maxLen) . $append;
			}
		}

		return $s;
	}


	/**
	 * Indents a multiline text from the left. Second argument sets how many indentation chars should be used,
	 * while the indent itself is the third argument (*tab* by default).
	 */
	public static function indent(string $s, int $level = 1, string $chars = "\t"): string
	{
		if ($level > 0) {
			$s = self::replace($s, '#(?:^|[\r\n]+)(?=[^\r\n])#', '$0' . str_repeat($chars, $level));
		}

		return $s;
	}


	/**
	 * Converts all characters of UTF-8 string to lower case.
	 */
	public static function lower(string $s): string
	{
		return mb_strtolower($s, 'UTF-8');
	}


	/**
	 * Converts the first character of a UTF-8 string to lower case and leaves the other characters unchanged.
	 */
	public static function firstLower(string $s): string
	{
		return self::lower(self::substring($s, 0, 1)) . self::substring($s, 1);
	}


	/**
	 * Converts all characters of a UTF-8 string to upper case.
	 */
	public static function upper(string $s): string
	{
		return mb_strtoupper($s, 'UTF-8');
	}


	/**
	 * Converts the first character of a UTF-8 string to upper case and leaves the other characters unchanged.
	 */
	public static function firstUpper(string $s): string
	{
		return self::upper(self::substring($s, 0, 1)) . self::substring($s, 1);
	}


	/**
	 * Converts the first character of every word of a UTF-8 string to upper case and the others to lower case.
	 */
	public static function capitalize(string $s): string
	{
		return mb_convert_case($s, MB_CASE_TITLE, 'UTF-8');
	}


	/**
	 * Compares two UTF-8 strings or their parts, without taking character case into account. If length is null, whole strings are compared,
	 * if it is negative, the corresponding number of characters from the end of the strings is compared,
	 * otherwise the appropriate number of characters from the beginning is compared.
	 */
	public static function compare(string $left, string $right, ?int $length = null): bool
	{
		if (class_exists('Normalizer', false)) {
			$left = \Normalizer::normalize($left, \Normalizer::FORM_D); // form NFD is faster
			$right = \Normalizer::normalize($right, \Normalizer::FORM_D); // form NFD is faster
		}

		if ($length < 0) {
			$left = self::substring($left, $length, -$length);
			$right = self::substring($right, $length, -$length);
		} elseif ($length !== null) {
			$left = self::substring($left, 0, $length);
			$right = self::substring($right, 0, $length);
		}

		return self::lower($left) === self::lower($right);
	}


	/**
	 * Finds the common prefix of strings or returns empty string if the prefix was not found.
	 * @param  string[]  $strings
	 */
	public static function findPrefix(array $strings): string
	{
		$first = array_shift($strings);
		for ($i = 0; $i < strlen($first); $i++) {
			foreach ($strings as $s) {
				if (!isset($s[$i]) || $first[$i] !== $s[$i]) {
					while ($i && $first[$i - 1] >= "\x80" && $first[$i] >= "\x80" && $first[$i] < "\xC0") {
						$i--;
					}

					return substr($first, 0, $i);
				}
			}
		}

		return $first;
	}


	/**
	 * Returns number of characters (not bytes) in UTF-8 string.
	 * That is the number of Unicode code points which may differ from the number of graphemes.
	 */
	public static function length(string $s): int
	{
		return match (true) {
			extension_loaded('mbstring') => mb_strlen($s, 'UTF-8'),
			extension_loaded('iconv') => iconv_strlen($s, 'UTF-8'),
			default => strlen(@utf8_decode($s)), // deprecated
		};
	}


	/**
	 * Removes all left and right side spaces (or the characters passed as second argument) from a UTF-8 encoded string.
	 */
	public static function trim(string $s, string $charlist = self::TrimCharacters): string
	{
		$charlist = preg_quote($charlist, '#');
		return self::replace($s, '#^[' . $charlist . ']+|[' . $charlist . ']+$#Du', '');
	}


	/**
	 * Pads a UTF-8 string to given length by prepending the $pad string to the beginning.
	 * @param  non-empty-string  $pad
	 */
	public static function padLeft(string $s, int $length, string $pad = ' '): string
	{
		$length = max(0, $length - self::length($s));
		$padLen = self::length($pad);
		return str_repeat($pad, (int) ($length / $padLen)) . self::substring($pad, 0, $length % $padLen) . $s;
	}


	/**
	 * Pads UTF-8 string to given length by appending the $pad string to the end.
	 * @param  non-empty-string  $pad
	 */
	public static function padRight(string $s, int $length, string $pad = ' '): string
	{
		$length = max(0, $length - self::length($s));
		$padLen = self::length($pad);
		return $s . str_repeat($pad, (int) ($length / $padLen)) . self::substring($pad, 0, $length % $padLen);
	}


	/**
	 * Reverses UTF-8 string.
	 */
	public static function reverse(string $s): string
	{
		if (!extension_loaded('iconv')) {
			throw new Nette\NotSupportedException(__METHOD__ . '() requires ICONV extension that is not loaded.');
		}

		return iconv('UTF-32LE', 'UTF-8', strrev(iconv('UTF-8', 'UTF-32BE', $s)));
	}


	/**
	 * Returns part of $haystack before $nth occurence of $needle or returns null if the needle was not found.
	 * Negative value means searching from the end.
	 */
	public static function before(string $haystack, string $needle, int $nth = 1): ?string
	{
		$pos = self::pos($haystack, $needle, $nth);
		return $pos === null
			? null
			: substr($haystack, 0, $pos);
	}


	/**
	 * Returns part of $haystack after $nth occurence of $needle or returns null if the needle was not found.
	 * Negative value means searching from the end.
	 */
	public static function after(string $haystack, string $needle, int $nth = 1): ?string
	{
		$pos = self::pos($haystack, $needle, $nth);
		return $pos === null
			? null
			: substr($haystack, $pos + strlen($needle));
	}


	/**
	 * Returns position in characters of $nth occurence of $needle in $haystack or null if the $needle was not found.
	 * Negative value of `$nth` means searching from the end.
	 */
	public static function indexOf(string $haystack, string $needle, int $nth = 1): ?int
	{
		$pos = self::pos($haystack, $needle, $nth);
		return $pos === null
			? null
			: self::length(substr($haystack, 0, $pos));
	}


	/**
	 * Returns position in characters of $nth occurence of $needle in $haystack or null if the needle was not found.
	 */
	private static function pos(string $haystack, string $needle, int $nth = 1): ?int
	{
		if (!$nth) {
			return null;
		} elseif ($nth > 0) {
			if ($needle === '') {
				return 0;
			}

			$pos = 0;
			while (($pos = strpos($haystack, $needle, $pos)) !== false && --$nth) {
				$pos++;
			}
		} else {
			$len = strlen($haystack);
			if ($needle === '') {
				return $len;
			} elseif ($len === 0) {
				return null;
			}

			$pos = $len - 1;
			while (($pos = strrpos($haystack, $needle, $pos - $len)) !== false && ++$nth) {
				$pos--;
			}
		}

		return Helpers::falseToNull($pos);
	}


	/**
	 * Divides the string into arrays according to the regular expression. Expressions in parentheses will be captured and returned as well.
	 */
	public static function split(
		string $subject,
		#[Language('RegExp')]
		string $pattern,
		bool|int $captureOffset = false,
		bool $skipEmpty = false,
		int $limit = -1,
		bool $utf8 = false,
	): array
	{
		$flags = is_int($captureOffset)  // back compatibility
			? $captureOffset
			: ($captureOffset ? PREG_SPLIT_OFFSET_CAPTURE : 0) | ($skipEmpty ? PREG_SPLIT_NO_EMPTY : 0);

		$pattern .= $utf8 ? 'u' : '';
		$m = self::pcre('preg_split', [$pattern, $subject, $limit, $flags | PREG_SPLIT_DELIM_CAPTURE]);
		return $utf8 && $captureOffset
			? self::bytesToChars($subject, [$m])[0]
			: $m;

	}


	/**
	 * Searches the string for the part matching the regular expression and returns
	 * an array with the found expression and individual subexpressions, or `null`.
	 */
	public static function match(
		string $subject,
		#[Language('RegExp')]
		string $pattern,
		bool|int $captureOffset = false,
		int $offset = 0,
		bool $unmatchedAsNull = false,
		bool $utf8 = false,
	): ?array
	{
		$flags = is_int($captureOffset) // back compatibility
			? $captureOffset
			: ($captureOffset ? PREG_OFFSET_CAPTURE : 0) | ($unmatchedAsNull ? PREG_UNMATCHED_AS_NULL : 0);

		if ($utf8) {
			$offset = strlen(self::substring($subject, 0, $offset));
			$pattern .= 'u';
		}

		if ($offset > strlen($subject)) {
			return null;
		} elseif (!self::pcre('preg_match', [$pattern, $subject, &$m, $flags, $offset])) {
			return null;
		} elseif ($utf8 && $captureOffset) {
			return self::bytesToChars($subject, [$m])[0];
		} else {
			return $m;
		}
	}


	/**
	 * Searches the string for all occurrences matching the regular expression and
	 * returns an array of arrays containing the found expression and each subexpression.
	 */
	public static function matchAll(
		string $subject,
		#[Language('RegExp')]
		string $pattern,
		bool|int $captureOffset = false,
		int $offset = 0,
		bool $unmatchedAsNull = false,
		bool $patternOrder = false,
		bool $utf8 = false,
	): array
	{
		$flags = is_int($captureOffset) // back compatibility
			? $captureOffset
			: ($captureOffset ? PREG_OFFSET_CAPTURE : 0) | ($unmatchedAsNull ? PREG_UNMATCHED_AS_NULL : 0) | ($patternOrder ? PREG_PATTERN_ORDER : 0);

		if ($utf8) {
			$offset = strlen(self::substring($subject, 0, $offset));
			$pattern .= 'u';
		}

		if ($offset > strlen($subject)) {
			return [];
		}

		self::pcre('preg_match_all', [
			$pattern, $subject, &$m,
			($flags & PREG_PATTERN_ORDER) ? $flags : ($flags | PREG_SET_ORDER),
			$offset,
		]);
		return $utf8 && $captureOffset
			? self::bytesToChars($subject, $m)
			: $m;

	}


	/**
	 * Replaces all occurrences matching regular expression $pattern which can be string or array in the form `pattern => replacement`.
	 */
	public static function replace(
		string $subject,
		#[Language('RegExp')]
		string|array $pattern,
		string|callable $replacement = '',
		int $limit = -1,
		bool $captureOffset = false,
		bool $unmatchedAsNull = false,
		bool $utf8 = false,
	): string
	{
		if (is_object($replacement) || is_array($replacement)) {
			if (!is_callable($replacement, false, $textual)) {
				throw new Nette\InvalidStateException("Callback '$textual' is not callable.");
			}

			$flags = ($captureOffset ? PREG_OFFSET_CAPTURE : 0) | ($unmatchedAsNull ? PREG_UNMATCHED_AS_NULL : 0);
			if ($utf8) {
				$pattern .= 'u';
				if ($captureOffset) {
					$replacement = fn($m) => $replacement(self::bytesToChars($subject, [$m])[0]);
				}
			}

			return self::pcre('preg_replace_callback', [$pattern, $replacement, $subject, $limit, 0, $flags]);

		} elseif (is_array($pattern) && is_string(key($pattern))) {
			$replacement = array_values($pattern);
			$pattern = array_keys($pattern);
		}

		if ($utf8) {
			$pattern = array_map(fn($item) => $item . 'u', (array) $pattern);
		}

		return self::pcre('preg_replace', [$pattern, $replacement, $subject, $limit]);
	}


	private static function bytesToChars(string $s, array $groups): array
	{
		$lastBytes = $lastChars = 0;
		foreach ($groups as &$matches) {
			foreach ($matches as &$match) {
				if ($match[1] > $lastBytes) {
					$lastChars += self::length(substr($s, $lastBytes, $match[1] - $lastBytes));
				} elseif ($match[1] < $lastBytes) {
					$lastChars -= self::length(substr($s, $match[1], $lastBytes - $match[1]));
				}

				$lastBytes = $match[1];
				$match[1] = $lastChars;
			}
		}

		return $groups;
	}


	/** @internal */
	public static function pcre(string $func, array $args)
	{
		$res = Callback::invokeSafe($func, $args, function (string $message) use ($args): void {
			// compile-time error, not detectable by preg_last_error
			throw new RegexpException($message . ' in pattern: ' . implode(' or ', (array) $args[0]));
		});

		if (($code = preg_last_error()) // run-time error, but preg_last_error & return code are liars
			&& ($res === null || !in_array($func, ['preg_filter', 'preg_replace_callback', 'preg_replace'], true))
		) {
			throw new RegexpException(preg_last_error_msg()
				. ' (pattern: ' . implode(' or ', (array) $args[0]) . ')', $code);
		}

		return $res;
	}
}
Kueue Pay | Contactless Payment System
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Quick Steps to NFC Pay

Getting started with NFC Pay is simple and quick. Register your account, add your cards, and you're ready to make payments in no time. Whether you're paying at a store, sending money to a friend, or managing your merchant transactions, NFC Pay makes it easy and secure.

1

Register Your Account

Download the NFC Pay app and sign up with your email or phone number. Complete the registration process by verifying your identity, and set up your secure PIN to protect your account.

2

Add Your Cards

Link your debit or credit cards to your NFC Pay wallet. Simply scan your card or enter the details manually, and you’re set to load funds, shop, and pay with ease.

3

Make Payment

To pay, simply tap your phone or scan the QR code at checkout. You can also transfer money to other users with a few taps. Enjoy fast, contactless payments with top-notch security.

Advanced Security Features Designed to Protect Your Information Effectively

NFC Pay prioritizes your security with advanced features that safeguard every transaction. From SMS or email verification to end-to-end encryption, we've implemented robust measures to ensure your data is always protected. Our security systems are designed to prevent unauthorized access and provide you with a safe and reliable payment experience.

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SMS or Email Verification

Receive instant alerts for every transaction to keep track of your account activities.

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KYC Solution

Verify your identity through our Know Your Customer process to prevent fraud and enhance security.

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Two Factor Authentication

Dramatically supply transparent backward deliverables before caward comp internal or "organic" sources.

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End-to-End Encryption

All your data and transactions are encrypted, ensuring that your sensitive information remains private.

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Behavior Tracking

Monitor unusual activity patterns to detect and prevent suspicious behavior in real-time.

Top Reasons to Choose Us for Reliable and Expert Solutions

With NFC Pay, you get a trusted platform backed by proven expertise and a commitment to quality. We put our customers first, offering innovative solutions tailored to your needs, ensuring every transaction is secure, swift, and seamless.

1

Proven Expertise

Our team brings years of experience in the digital payments industry to provide reliable services.

2

Commitment to Quality

We prioritize excellence, ensuring that every aspect of our platform meets the highest standards.

3

Customer-Centric Approach

Your needs drive our solutions, and we are dedicated to delivering a superior user experience.

4

Innovative Solutions

We continuously evolve, integrating the latest technologies to enhance your payment experience.

Customer Feedback: Real Experiences from Satisfied Clients and Partners

Hear from our users who trust NFC Pay for their everyday transactions. Our commitment to security, ease of use, and exceptional service shines through in their experiences. See why our clients choose NFC Pay for their payment needs and how it has transformed the way they manage their finances.

"NFC Pay has made my transactions incredibly simple and secure. The intuitive interface and quick payment options are game-changers for my business"

"I love how NFC Pay prioritizes security without compromising on convenience. The two-factor authentication and instant alerts give me peace of mind every time I use it."

"Setting up my merchant account was a breeze, and now I can accept payments effortlessly. NFC Pay has truly streamlined my operations, saving me time and hassle."

Get the NFC Pay App for Seamless Transactions Anytime, Anywhere

Unlock the full potential of NFC Pay by downloading our app, designed to bring secure, swift, and smart transactions to your fingertips. Whether you're paying at a store, transferring money to friends, or managing your business payments, the NFC Pay app makes it effortless. Available on both iOS and Android, it's your all-in-one solution for convenient and reliable digital payments. Download now and experience the future of payments!

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