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<?php
namespace Safe;
use Safe\Exceptions\UrlException;
/**
* Decodes a base64 encoded data.
*
* @param string $data The encoded data.
* @param bool $strict If the strict parameter is set to TRUE
* then the base64_decode function will return
* FALSE if the input contains character from outside the base64
* alphabet. Otherwise invalid characters will be silently discarded.
* @return string Returns the decoded data. The returned data may be
* binary.
* @throws UrlException
*
*/
function base64_decode(string $data, bool $strict = false): string
{
error_clear_last();
$result = \base64_decode($data, $strict);
if ($result === false) {
throw UrlException::createFromPhpError();
}
return $result;
}
/**
* get_headers returns an array with the headers sent
* by the server in response to a HTTP request.
*
* @param string $url The target URL.
* @param int $format If the optional format parameter is set to non-zero,
* get_headers parses the response and sets the
* array's keys.
* @param resource $context A valid context resource created with
* stream_context_create.
* @return array Returns an indexed or associative array with the headers.
* @throws UrlException
*
*/
function get_headers(string $url, int $format = 0, $context = null): array
{
error_clear_last();
if ($context !== null) {
$result = \get_headers($url, $format, $context);
} else {
$result = \get_headers($url, $format);
}
if ($result === false) {
throw UrlException::createFromPhpError();
}
return $result;
}
/**
* This function parses a URL and returns an associative array containing any
* of the various components of the URL that are present.
* The values of the array elements are not URL decoded.
*
* This function is not meant to validate
* the given URL, it only breaks it up into the above listed parts. Partial
* URLs are also accepted, parse_url tries its best to
* parse them correctly.
*
* @param string $url The URL to parse. Invalid characters are replaced by
* _.
* @param int $component Specify one of PHP_URL_SCHEME,
* PHP_URL_HOST, PHP_URL_PORT,
* PHP_URL_USER, PHP_URL_PASS,
* PHP_URL_PATH, PHP_URL_QUERY
* or PHP_URL_FRAGMENT to retrieve just a specific
* URL component as a string (except when
* PHP_URL_PORT is given, in which case the return
* value will be an integer).
* @return mixed On seriously malformed URLs, parse_url.
*
* If the component parameter is omitted, an
* associative array is returned. At least one element will be
* present within the array. Potential keys within this array are:
*
*
*
* scheme - e.g. http
*
*
*
*
* host
*
*
*
*
* port
*
*
*
*
* user
*
*
*
*
* pass
*
*
*
*
* path
*
*
*
*
* query - after the question mark ?
*
*
*
*
* fragment - after the hashmark #
*
*
*
*
* If the component parameter is specified,
* parse_url returns a string (or an
* integer, in the case of PHP_URL_PORT)
* instead of an array. If the requested component doesn't exist
* within the given URL, NULL will be returned.
* @throws UrlException
*
*/
function parse_url(string $url, int $component = -1)
{
error_clear_last();
$result = \parse_url($url, $component);
if ($result === false) {
throw UrlException::createFromPhpError();
}
return $result;
}
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