Viewing file:  url_helper.php (18.16 KB) -rw-r--r--
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<?php
/**
* This file is part of CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
use CodeIgniter\HTTP\IncomingRequest;
use CodeIgniter\HTTP\URI;
use CodeIgniter\Router\Exceptions\RouterException;
use Config\App;
use Config\Services;
// CodeIgniter URL Helpers
if (! function_exists('_get_uri')) {
/**
* Used by the other URL functions to build a
* framework-specific URI based on the App config.
*
* @internal Outside of the framework this should not be used directly.
*
* @param string $relativePath May include queries or fragments
*
* @throws InvalidArgumentException For invalid paths or config
*/
function _get_uri(string $relativePath = '', ?App $config = null): URI
{
$config ??= config('App');
if ($config->baseURL === '') {
throw new InvalidArgumentException('_get_uri() requires a valid baseURL.');
}
// If a full URI was passed then convert it
if (is_int(strpos($relativePath, '://'))) {
$full = new URI($relativePath);
$relativePath = URI::createURIString(null, null, $full->getPath(), $full->getQuery(), $full->getFragment());
}
$relativePath = URI::removeDotSegments($relativePath);
// Build the full URL based on $config and $relativePath
$url = rtrim($config->baseURL, '/ ') . '/';
// Check for an index page
if ($config->indexPage !== '') {
$url .= $config->indexPage;
// Check if we need a separator
if ($relativePath !== '' && $relativePath[0] !== '/' && $relativePath[0] !== '?') {
$url .= '/';
}
}
$url .= $relativePath;
$uri = new URI($url);
// Check if the baseURL scheme needs to be coerced into its secure version
if ($config->forceGlobalSecureRequests && $uri->getScheme() === 'http') {
$uri->setScheme('https');
}
return $uri;
}
}
if (! function_exists('site_url')) {
/**
* Returns a site URL as defined by the App config.
*
* @param mixed $relativePath URI string or array of URI segments
* @param App|null $config Alternate configuration to use
*/
function site_url($relativePath = '', ?string $scheme = null, ?App $config = null): string
{
// Convert array of segments to a string
if (is_array($relativePath)) {
$relativePath = implode('/', $relativePath);
}
$uri = _get_uri($relativePath, $config);
return URI::createURIString($scheme ?? $uri->getScheme(), $uri->getAuthority(), $uri->getPath(), $uri->getQuery(), $uri->getFragment());
}
}
if (! function_exists('base_url')) {
/**
* Returns the base URL as defined by the App config.
* Base URLs are trimmed site URLs without the index page.
*
* @param mixed $relativePath URI string or array of URI segments
* @param string $scheme
*/
function base_url($relativePath = '', ?string $scheme = null): string
{
$config = clone config('App');
$config->indexPage = '';
return rtrim(site_url($relativePath, $scheme, $config), '/');
}
}
if (! function_exists('current_url')) {
/**
* Returns the current full URL based on the Config\App settings and IncomingRequest.
* String returns ignore query and fragment parts.
*
* @param bool $returnObject True to return an object instead of a string
* @param IncomingRequest|null $request A request to use when retrieving the path
*
* @return string|URI
*/
function current_url(bool $returnObject = false, ?IncomingRequest $request = null)
{
$request ??= Services::request();
$path = $request->getPath();
// Append queries and fragments
if ($query = $request->getUri()->getQuery()) {
$path .= '?' . $query;
}
if ($fragment = $request->getUri()->getFragment()) {
$path .= '#' . $fragment;
}
$uri = _get_uri($path);
return $returnObject ? $uri : URI::createURIString($uri->getScheme(), $uri->getAuthority(), $uri->getPath());
}
}
if (! function_exists('previous_url')) {
/**
* Returns the previous URL the current visitor was on. For security reasons
* we first check in a saved session variable, if it exists, and use that.
* If that's not available, however, we'll use a sanitized url from $_SERVER['HTTP_REFERER']
* which can be set by the user so is untrusted and not set by certain browsers/servers.
*
* @return mixed|string|URI
*/
function previous_url(bool $returnObject = false)
{
// Grab from the session first, if we have it,
// since it's more reliable and safer.
// Otherwise, grab a sanitized version from $_SERVER.
$referer = $_SESSION['_ci_previous_url'] ?? Services::request()->getServer('HTTP_REFERER', FILTER_SANITIZE_URL);
$referer ??= site_url('/');
return $returnObject ? new URI($referer) : $referer;
}
}
if (! function_exists('uri_string')) {
/**
* URL String
*
* Returns the path part of the current URL
*
* @param bool $relative Whether the resulting path should be relative to baseURL
*/
function uri_string(bool $relative = false): string
{
return $relative
? ltrim(Services::request()->getPath(), '/')
: Services::request()->getUri()->getPath();
}
}
if (! function_exists('index_page')) {
/**
* Index page
*
* Returns the "index_page" from your config file
*
* @param App|null $altConfig Alternate configuration to use
*/
function index_page(?App $altConfig = null): string
{
// use alternate config if provided, else default one
$config = $altConfig ?? config(App::class);
return $config->indexPage;
}
}
if (! function_exists('anchor')) {
/**
* Anchor Link
*
* Creates an anchor based on the local URL.
*
* @param mixed $uri URI string or array of URI segments
* @param string $title The link title
* @param mixed $attributes Any attributes
* @param App|null $altConfig Alternate configuration to use
*/
function anchor($uri = '', string $title = '', $attributes = '', ?App $altConfig = null): string
{
// use alternate config if provided, else default one
$config = $altConfig ?? config(App::class);
$siteUrl = is_array($uri) ? site_url($uri, null, $config) : (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri, null, $config));
// eliminate trailing slash
$siteUrl = rtrim($siteUrl, '/');
if ($title === '') {
$title = $siteUrl;
}
if ($attributes !== '') {
$attributes = stringify_attributes($attributes);
}
return '<a href="' . $siteUrl . '"' . $attributes . '>' . $title . '</a>';
}
}
if (! function_exists('anchor_popup')) {
/**
* Anchor Link - Pop-up version
*
* Creates an anchor based on the local URL. The link
* opens a new window based on the attributes specified.
*
* @param string $uri the URL
* @param string $title the link title
* @param mixed $attributes any attributes
* @param App|null $altConfig Alternate configuration to use
*/
function anchor_popup($uri = '', string $title = '', $attributes = false, ?App $altConfig = null): string
{
// use alternate config if provided, else default one
$config = $altConfig ?? config(App::class);
$siteUrl = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri, null, $config);
$siteUrl = rtrim($siteUrl, '/');
if ($title === '') {
$title = $siteUrl;
}
if ($attributes === false) {
return '<a href="' . $siteUrl . '" onclick="window.open(\'' . $siteUrl . "', '_blank'); return false;\">" . $title . '</a>';
}
if (! is_array($attributes)) {
$attributes = [$attributes];
// Ref: http://www.w3schools.com/jsref/met_win_open.asp
$windowName = '_blank';
} elseif (! empty($attributes['window_name'])) {
$windowName = $attributes['window_name'];
unset($attributes['window_name']);
} else {
$windowName = '_blank';
}
foreach (['width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0'] as $key => $val) {
$atts[$key] = $attributes[$key] ?? $val;
unset($attributes[$key]);
}
$attributes = stringify_attributes($attributes);
return '<a href="' . $siteUrl
. '" onclick="window.open(\'' . $siteUrl . "', '" . $windowName . "', '" . stringify_attributes($atts, true) . "'); return false;\""
. $attributes . '>' . $title . '</a>';
}
}
if (! function_exists('mailto')) {
/**
* Mailto Link
*
* @param string $email the email address
* @param string $title the link title
* @param mixed $attributes any attributes
*/
function mailto(string $email, string $title = '', $attributes = ''): string
{
if (trim($title) === '') {
$title = $email;
}
return '<a href="mailto:' . $email . '"' . stringify_attributes($attributes) . '>' . $title . '</a>';
}
}
if (! function_exists('safe_mailto')) {
/**
* Encoded Mailto Link
*
* Create a spam-protected mailto link written in Javascript
*
* @param string $email the email address
* @param string $title the link title
* @param mixed $attributes any attributes
*/
function safe_mailto(string $email, string $title = '', $attributes = ''): string
{
if (trim($title) === '') {
$title = $email;
}
$x = str_split('<a href="mailto:', 1);
for ($i = 0, $l = strlen($email); $i < $l; $i++) {
$x[] = '|' . ord($email[$i]);
}
$x[] = '"';
if ($attributes !== '') {
if (is_array($attributes)) {
foreach ($attributes as $key => $val) {
$x[] = ' ' . $key . '="';
for ($i = 0, $l = strlen($val); $i < $l; $i++) {
$x[] = '|' . ord($val[$i]);
}
$x[] = '"';
}
} else {
for ($i = 0, $l = mb_strlen($attributes); $i < $l; $i++) {
$x[] = mb_substr($attributes, $i, 1);
}
}
}
$x[] = '>';
$temp = [];
for ($i = 0, $l = strlen($title); $i < $l; $i++) {
$ordinal = ord($title[$i]);
if ($ordinal < 128) {
$x[] = '|' . $ordinal;
} else {
if (empty($temp)) {
$count = ($ordinal < 224) ? 2 : 3;
}
$temp[] = $ordinal;
if (count($temp) === $count) {
$number = ($count === 3) ? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64) : (($temp[0] % 32) * 64) + ($temp[1] % 64);
$x[] = '|' . $number;
$count = 1;
$temp = [];
}
}
}
$x[] = '<';
$x[] = '/';
$x[] = 'a';
$x[] = '>';
$x = array_reverse($x);
// improve obfuscation by eliminating newlines & whitespace
$output = '<script type="text/javascript">'
. 'var l=new Array();';
foreach ($x as $i => $value) {
$output .= 'l[' . $i . "] = '" . $value . "';";
}
return $output . ('for (var i = l.length-1; i >= 0; i=i-1) {'
. "if (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");"
. 'else document.write(unescape(l[i]));'
. '}'
. '</script>');
}
}
if (! function_exists('auto_link')) {
/**
* Auto-linker
*
* Automatically links URL and Email addresses.
* Note: There's a bit of extra code here to deal with
* URLs or emails that end in a period. We'll strip these
* off and add them after the link.
*
* @param string $str the string
* @param string $type the type: email, url, or both
* @param bool $popup whether to create pop-up links
*/
function auto_link(string $str, string $type = 'both', bool $popup = false): string
{
// Find and replace any URLs.
if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[^\s()<>;]+\w#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
// Set our target HTML if using popup links.
$target = ($popup) ? ' target="_blank"' : '';
// We process the links in reverse order (last -> first) so that
// the returned string offsets from preg_match_all() are not
// moved as we add more HTML.
foreach (array_reverse($matches) as $match) {
// $match[0] is the matched string/link
// $match[1] is either a protocol prefix or 'www.'
//
// With PREG_OFFSET_CAPTURE, both of the above is an array,
// where the actual value is held in [0] and its offset at the [1] index.
$a = '<a href="' . (strpos($match[1][0], '/') ? '' : 'http://') . $match[0][0] . '"' . $target . '>' . $match[0][0] . '</a>';
$str = substr_replace($str, $a, $match[0][1], strlen($match[0][0]));
}
}
// Find and replace any emails.
if ($type !== 'url' && preg_match_all('#([\w\.\-\+]+@[a-z0-9\-]+\.[a-z0-9\-\.]+[^[:punct:]\s])#i', $str, $matches, PREG_OFFSET_CAPTURE)) {
foreach (array_reverse($matches[0]) as $match) {
if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== false) {
$str = substr_replace($str, safe_mailto($match[0]), $match[1], strlen($match[0]));
}
}
}
return $str;
}
}
if (! function_exists('prep_url')) {
/**
* Prep URL - Simply adds the http:// or https:// part if no scheme is included.
*
* Formerly used URI, but that does not play nicely with URIs missing
* the scheme.
*
* @param string $str the URL
* @param bool $secure set true if you want to force https://
*/
function prep_url(string $str = '', bool $secure = false): string
{
if (in_array($str, ['http://', 'https://', '//', ''], true)) {
return '';
}
if (parse_url($str, PHP_URL_SCHEME) === null) {
$str = 'http://' . ltrim($str, '/');
}
// force replace http:// with https://
if ($secure) {
$str = preg_replace('/^(?:http):/i', 'https:', $str);
}
return $str;
}
}
if (! function_exists('url_title')) {
/**
* Create URL Title
*
* Takes a "title" string as input and creates a
* human-friendly URL string with a "separator" string
* as the word separator.
*
* @param string $str Input string
* @param string $separator Word separator (usually '-' or '_')
* @param bool $lowercase Whether to transform the output string to lowercase
*/
function url_title(string $str, string $separator = '-', bool $lowercase = false): string
{
$qSeparator = preg_quote($separator, '#');
$trans = [
'&.+?;' => '',
'[^\w\d\pL\pM _-]' => '',
'\s+' => $separator,
'(' . $qSeparator . ')+' => $separator,
];
$str = strip_tags($str);
foreach ($trans as $key => $val) {
$str = preg_replace('#' . $key . '#iu', $val, $str);
}
if ($lowercase === true) {
$str = mb_strtolower($str);
}
return trim(trim($str, $separator));
}
}
if (! function_exists('mb_url_title')) {
/**
* Create URL Title that takes into account accented characters
*
* Takes a "title" string as input and creates a
* human-friendly URL string with a "separator" string
* as the word separator.
*
* @param string $str Input string
* @param string $separator Word separator (usually '-' or '_')
* @param bool $lowercase Whether to transform the output string to lowercase
*/
function mb_url_title(string $str, string $separator = '-', bool $lowercase = false): string
{
helper('text');
return url_title(convert_accented_characters($str), $separator, $lowercase);
}
}
if (! function_exists('url_to')) {
/**
* Get the full, absolute URL to a controller method
* (with additional arguments)
*
* NOTE: This requires the controller/method to
* have a route defined in the routes Config file.
*
* @param mixed ...$args
*
* @throws RouterException
*/
function url_to(string $controller, ...$args): string
{
if (! $route = route_to($controller, ...$args)) {
$explode = explode('::', $controller);
if (isset($explode[1])) {
throw RouterException::forControllerNotFound($explode[0], $explode[1]);
}
throw RouterException::forInvalidRoute($controller);
}
return site_url($route);
}
}
if (! function_exists('url_is')) {
/**
* Determines if current url path contains
* the given path. It may contain a wildcard (*)
* which will allow any valid character.
*
* Example:
* if (url_is('admin*)) ...
*/
function url_is(string $path): bool
{
// Setup our regex to allow wildcards
$path = '/' . trim(str_replace('*', '(\S)*', $path), '/ ');
$currentPath = '/' . trim(uri_string(true), '/ ');
return (bool) preg_match("|^{$path}$|", $currentPath, $matches);
}
}
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