205 lines
4.9 KiB
PHP
205 lines
4.9 KiB
PHP
<?php
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namespace Safe;
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use Safe\Exceptions\UrlException;
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/**
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* Decodes a base64 encoded string.
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*
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* @param string $string The encoded data.
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* @param bool $strict If the strict parameter is set to TRUE
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* then the base64_decode function will return
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* FALSE if the input contains character from outside the base64
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* alphabet. Otherwise invalid characters will be silently discarded.
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* @return string Returns the decoded data. The returned data may be
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* binary.
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* @throws UrlException
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*
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*/
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function base64_decode(string $string, bool $strict = false): string
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{
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error_clear_last();
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$result = \base64_decode($string, $strict);
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if ($result === false) {
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throw UrlException::createFromPhpError();
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}
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return $result;
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}
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/**
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* get_headers returns an array with the headers sent
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* by the server in response to a HTTP request.
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*
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* @param string $url The target URL.
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* @param bool $associative If the optional associative parameter is set to true,
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* get_headers parses the response and sets the
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* array's keys.
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* @param resource $context A valid context resource created with
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* stream_context_create, or NULL to use the
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* default context.
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* @return array Returns an indexed or associative array with the headers.
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* @throws UrlException
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*
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*/
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function get_headers(string $url, bool $associative = false, $context = null): array
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{
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error_clear_last();
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if ($context !== null) {
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$result = \get_headers($url, $associative, $context);
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} else {
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$result = \get_headers($url, $associative);
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}
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if ($result === false) {
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throw UrlException::createFromPhpError();
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}
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return $result;
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}
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/**
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* Opens filename and parses it line by line for
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* <meta> tags in the file. The parsing stops at
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* </head>.
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*
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* @param string $filename The path to the HTML file, as a string. This can be a local file or an
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* URL.
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*
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*
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* What get_meta_tags parses
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*
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*
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*
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*
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*
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*
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* ]]>
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*
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*
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* @param bool $use_include_path Setting use_include_path to TRUE will result
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* in PHP trying to open the file along the standard include path as per
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* the include_path directive.
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* This is used for local files, not URLs.
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* @return array Returns an array with all the parsed meta tags.
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*
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* The value of the name property becomes the key, the value of the content
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* property becomes the value of the returned array, so you can easily use
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* standard array functions to traverse it or access single values.
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* Special characters in the value of the name property are substituted with
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* '_', the rest is converted to lower case. If two meta tags have the same
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* name, only the last one is returned.
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*
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* Returns FALSE on failure.
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* @throws UrlException
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*
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*/
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function get_meta_tags(string $filename, bool $use_include_path = false): array
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{
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error_clear_last();
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$result = \get_meta_tags($filename, $use_include_path);
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if ($result === false) {
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throw UrlException::createFromPhpError();
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}
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return $result;
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}
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/**
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* This function parses a URL and returns an associative array containing any
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* of the various components of the URL that are present.
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* The values of the array elements are not URL decoded.
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*
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* This function is not meant to validate
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* the given URL, it only breaks it up into the parts listed below. Partial and invalid
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* URLs are also accepted, parse_url tries its best to
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* parse them correctly.
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*
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* @param string $url The URL to parse.
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* @param int $component Specify one of PHP_URL_SCHEME,
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* PHP_URL_HOST, PHP_URL_PORT,
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* PHP_URL_USER, PHP_URL_PASS,
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* PHP_URL_PATH, PHP_URL_QUERY
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* or PHP_URL_FRAGMENT to retrieve just a specific
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* URL component as a string (except when
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* PHP_URL_PORT is given, in which case the return
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* value will be an int).
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* @return array|int|string|null On seriously malformed URLs, parse_url.
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*
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* If the component parameter is omitted, an
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* associative array is returned. At least one element will be
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* present within the array. Potential keys within this array are:
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*
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*
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*
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* scheme - e.g. http
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*
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*
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*
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*
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* host
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*
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*
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*
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*
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* port
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*
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*
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*
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*
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* user
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*
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*
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*
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*
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* pass
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*
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*
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*
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*
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* path
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*
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*
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*
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*
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* query - after the question mark ?
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*
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*
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*
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*
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* fragment - after the hashmark #
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*
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*
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*
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*
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* If the component parameter is specified,
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* parse_url returns a string (or an
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* int, in the case of PHP_URL_PORT)
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* instead of an array. If the requested component doesn't exist
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* within the given URL, NULL will be returned.
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* As of PHP 8.0.0, parse_url distinguishes absent and empty
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* queries and fragments:
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*
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*
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*
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*
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*
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*
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*
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* Previously all cases resulted in query and fragment being NULL.
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*
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* Note that control characters (cf. ctype_cntrl) in the
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* components are replaced with underscores (_).
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* @throws UrlException
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*
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*/
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function parse_url(string $url, int $component = -1)
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{
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error_clear_last();
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$result = \parse_url($url, $component);
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if ($result === false) {
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throw UrlException::createFromPhpError();
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}
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return $result;
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}
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