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Http Component added
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‎Http.php‎

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<?php
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namespace Flextype\Component\Http;
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use Flextype\Component\Arr\Arr;
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class Http
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{
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/**
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* HTTP status codes and messages
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*
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* @var array
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*/
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public static $http_status_messages = [
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100 => 'Continue',
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101 => 'Switching Protocols',
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102 => 'Processing', // RFC2518
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200 => 'OK',
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201 => 'Created',
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202 => 'Accepted',
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203 => 'Non-Authoritative Information',
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204 => 'No Content',
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205 => 'Reset Content',
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206 => 'Partial Content',
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207 => 'Multi-Status', // RFC4918
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208 => 'Already Reported', // RFC5842
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226 => 'IM Used', // RFC3229
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300 => 'Multiple Choices',
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301 => 'Moved Permanently',
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302 => 'Found',
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303 => 'See Other',
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304 => 'Not Modified',
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305 => 'Use Proxy',
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306 => 'Reserved',
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307 => 'Temporary Redirect',
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308 => 'Permanent Redirect', // RFC-reschke-http-status-308-07
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400 => 'Bad Request',
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401 => 'Unauthorized',
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402 => 'Payment Required',
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403 => 'Forbidden',
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404 => 'Not Found',
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405 => 'Method Not Allowed',
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406 => 'Not Acceptable',
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407 => 'Proxy Authentication Required',
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408 => 'Request Timeout',
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409 => 'Conflict',
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410 => 'Gone',
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411 => 'Length Required',
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412 => 'Precondition Failed',
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413 => 'Request Entity Too Large',
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414 => 'Request-URI Too Long',
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415 => 'Unsupported Media Type',
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416 => 'Requested Range Not Satisfiable',
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417 => 'Expectation Failed',
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418 => 'I\'m a teapot', // RFC2324
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422 => 'Unprocessable Entity', // RFC4918
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423 => 'Locked', // RFC4918
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424 => 'Failed Dependency', // RFC4918
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425 => 'Reserved for WebDAV advanced collections expired proposal', // RFC2817
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426 => 'Upgrade Required', // RFC2817
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428 => 'Precondition Required', // RFC6585
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429 => 'Too Many Requests', // RFC6585
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431 => 'Request Header Fields Too Large', // RFC6585
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500 => 'Internal Server Error',
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501 => 'Not Implemented',
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502 => 'Bad Gateway',
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503 => 'Service Unavailable',
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504 => 'Gateway Timeout',
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505 => 'HTTP Version Not Supported',
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506 => 'Variant Also Negotiates (Experimental)', // RFC2295
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507 => 'Insufficient Storage', // RFC4918
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508 => 'Loop Detected', // RFC5842
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510 => 'Not Extended', // RFC2774
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511 => 'Network Authentication Required', // RFC6585
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];
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/**
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* Set response header status
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*
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* Http::setResponseStatus(404);
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*
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* @param integer $status Status code
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* @return void
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*/
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public static function setResponseStatus(int $status) : void
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{
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if (array_key_exists($status, Http::$http_status_messages)) {
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header('HTTP/1.1 ' . $status . ' ' . Http::$http_status_messages[$status]);
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}
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}
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/**
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* Redirects the browser to a page specified by the $url argument.
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*
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* Http::redirect('test');
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*
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* @param string $url The URL
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* @param integer $status Status
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* @param integer $delay Delay
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*/
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public static function redirect(string $url, int $status = 302, int $delay = null)
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{
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// Status codes
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$messages = [];
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$messages[301] = '301 Moved Permanently';
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$messages[302] = '302 Found';
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// Is Headers sent ?
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if (headers_sent()) {
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echo "<script>document.location.href='" . $url . "';</script>\n";
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} else {
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// Redirect headers
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Http::setRequestHeaders('HTTP/1.1 ' . $status . ' ' . Arr::get($messages, $status, 302));
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// Delay execution
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if ($delay !== null) {
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sleep((int) $delay);
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}
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// Redirect
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Http::setRequestHeaders("Location: $url");
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// Shutdown request
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Http::requestShutdown();
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}
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}
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/**
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* Set one or multiple headers.
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*
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* Http::setRequestHeaders('Location: http://site.com/');
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*
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* @param mixed $headers String or array with headers to send.
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*/
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public static function setRequestHeaders($headers)
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{
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// Loop elements
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foreach ((array) $headers as $header) {
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// Set header
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header((string) $header);
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}
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}
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/**
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* Get
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*
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* $action = Http::get('action');
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*
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* @param string $key Key
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* @param mixed
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*/
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public static function get(string $key)
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{
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return Arr::get($_GET, $key);
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}
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/**
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* Post
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*
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* $login = Http::post('login');
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*
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* @param string $key Key
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* @param mixed
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*/
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public static function post(string $key)
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{
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return Arr::get($_POST, $key);
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}
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/**
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* Gets the base URL
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*
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* echo Http::getBaseUrl();
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*
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* @return string
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*/
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public static function getBaseUrl() : string
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{
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$https = (isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on') ? 'https://' : 'http://';
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return $https . rtrim(rtrim($_SERVER['HTTP_HOST'], '\\/') . dirname($_SERVER['PHP_SELF']), '\\/');
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}
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/**
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* Gets current URL
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*
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* echo Http::getCurrentUrl();
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*
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* @return string
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*/
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public static function getCurrentUrl() : string
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{
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return (!empty($_SERVER['HTTPS'])) ? "https://".$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'] : "http://".$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'];
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}
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/**
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* Get Uri String
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*
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* $uri_string = Http::getUriString();
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*
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* @access public
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* @return string
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*/
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public static function getUriString() : string
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{
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// Get request url and script url
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$url = '';
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$request_url = (isset($_SERVER['REQUEST_URI'])) ? $_SERVER['REQUEST_URI'] : '';
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$script_url = (isset($_SERVER['PHP_SELF'])) ? $_SERVER['PHP_SELF'] : '';
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// Get our url path and trim the / of the left and the right
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if ($request_url != $script_url) {
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$url = trim(preg_replace('/'. str_replace('/', '\/', str_replace('index.php', '', $script_url)) .'/', '', $request_url, 1), '/');
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}
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$url = preg_replace('/\?.*/', '', $url); // Strip query string
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return $url;
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}
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/**
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* Get Uri Segments
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*
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* $uri_segments = Http::getUriSegments();
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*
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* @access public
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* @return array
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*/
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public static function getUriSegments() : array
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{
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return explode('/', self::getUriString());
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}
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/**
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* Get Uri Segment
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*
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* $uri_segment = Http::getUriSegment(1);
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*
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* @access public
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* @param int $segment segment
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* @return string
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*/
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public static function getUriSegment(int $segment) : string
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{
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$segments = self::getUriSegments();
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return isset($segments[$segment]) ? $segments[$segment] : null;
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}
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/**
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* Returns whether this is an ajax request or not
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*
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* if (Http::isAjax()) {
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* // do something...
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* }
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*
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* @return boolean
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*/
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public static function isAjax() : bool
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{
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return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] === 'XMLHttpRequest';
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}
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/**
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* Terminate request
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*
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* Http::requestShutdown();
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*
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*/
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public static function requestShutdown()
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{
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exit(0);
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}
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}

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