The Rise of Contactless Payments:...
In recent years, contactless payments have surged in popularity, driven...
<?php
declare(strict_types=1);
namespace GuzzleHttp\Psr7;
final class Query
{
/**
* Parse a query string into an associative array.
*
* If multiple values are found for the same key, the value of that key
* value pair will become an array. This function does not parse nested
* PHP style arrays into an associative array (e.g., `foo[a]=1&foo[b]=2`
* will be parsed into `['foo[a]' => '1', 'foo[b]' => '2'])`.
*
* @param string $str Query string to parse
* @param int|bool $urlEncoding How the query string is encoded
*/
public static function parse(string $str, $urlEncoding = true): array
{
$result = [];
if ($str === '') {
return $result;
}
if ($urlEncoding === true) {
$decoder = function ($value) {
return rawurldecode(str_replace('+', ' ', (string) $value));
};
} elseif ($urlEncoding === PHP_QUERY_RFC3986) {
$decoder = 'rawurldecode';
} elseif ($urlEncoding === PHP_QUERY_RFC1738) {
$decoder = 'urldecode';
} else {
$decoder = function ($str) {
return $str;
};
}
foreach (explode('&', $str) as $kvp) {
$parts = explode('=', $kvp, 2);
$key = $decoder($parts[0]);
$value = isset($parts[1]) ? $decoder($parts[1]) : null;
if (!array_key_exists($key, $result)) {
$result[$key] = $value;
} else {
if (!is_array($result[$key])) {
$result[$key] = [$result[$key]];
}
$result[$key][] = $value;
}
}
return $result;
}
/**
* Build a query string from an array of key value pairs.
*
* This function can use the return value of `parse()` to build a query
* string. This function does not modify the provided keys when an array is
* encountered (like `http_build_query()` would).
*
* @param array $params Query string parameters.
* @param int|false $encoding Set to false to not encode, PHP_QUERY_RFC3986
* to encode using RFC3986, or PHP_QUERY_RFC1738
* to encode using RFC1738.
*/
public static function build(array $params, $encoding = PHP_QUERY_RFC3986): string
{
if (!$params) {
return '';
}
if ($encoding === false) {
$encoder = function (string $str): string {
return $str;
};
} elseif ($encoding === PHP_QUERY_RFC3986) {
$encoder = 'rawurlencode';
} elseif ($encoding === PHP_QUERY_RFC1738) {
$encoder = 'urlencode';
} else {
throw new \InvalidArgumentException('Invalid type');
}
$qs = '';
foreach ($params as $k => $v) {
$k = $encoder((string) $k);
if (!is_array($v)) {
$qs .= $k;
$v = is_bool($v) ? (int) $v : $v;
if ($v !== null) {
$qs .= '='.$encoder((string) $v);
}
$qs .= '&';
} else {
foreach ($v as $vv) {
$qs .= $k;
$vv = is_bool($vv) ? (int) $vv : $vv;
if ($vv !== null) {
$qs .= '='.$encoder((string) $vv);
}
$qs .= '&';
}
}
}
return $qs ? (string) substr($qs, 0, -1) : '';
}
}
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Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.
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