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Diffstat (limited to 'bin/wiki/vendor/guzzlehttp/psr7/src/functions.php')
| -rw-r--r-- | bin/wiki/vendor/guzzlehttp/psr7/src/functions.php | 898 |
1 files changed, 898 insertions, 0 deletions
diff --git a/bin/wiki/vendor/guzzlehttp/psr7/src/functions.php b/bin/wiki/vendor/guzzlehttp/psr7/src/functions.php new file mode 100644 index 00000000..957bfb42 --- /dev/null +++ b/bin/wiki/vendor/guzzlehttp/psr7/src/functions.php @@ -0,0 +1,898 @@ +<?php +namespace GuzzleHttp\Psr7; + +use Psr\Http\Message\MessageInterface; +use Psr\Http\Message\RequestInterface; +use Psr\Http\Message\ResponseInterface; +use Psr\Http\Message\ServerRequestInterface; +use Psr\Http\Message\StreamInterface; +use Psr\Http\Message\UriInterface; + +/** + * Returns the string representation of an HTTP message. + * + * @param MessageInterface $message Message to convert to a string. + * + * @return string + */ +function str(MessageInterface $message) +{ + if ($message instanceof RequestInterface) { + $msg = trim($message->getMethod() . ' ' + . $message->getRequestTarget()) + . ' HTTP/' . $message->getProtocolVersion(); + if (!$message->hasHeader('host')) { + $msg .= "\r\nHost: " . $message->getUri()->getHost(); + } + } elseif ($message instanceof ResponseInterface) { + $msg = 'HTTP/' . $message->getProtocolVersion() . ' ' + . $message->getStatusCode() . ' ' + . $message->getReasonPhrase(); + } else { + throw new \InvalidArgumentException('Unknown message type'); + } + + foreach ($message->getHeaders() as $name => $values) { + $msg .= "\r\n{$name}: " . implode(', ', $values); + } + + return "{$msg}\r\n\r\n" . $message->getBody(); +} + +/** + * Returns a UriInterface for the given value. + * + * This function accepts a string or {@see Psr\Http\Message\UriInterface} and + * returns a UriInterface for the given value. If the value is already a + * `UriInterface`, it is returned as-is. + * + * @param string|UriInterface $uri + * + * @return UriInterface + * @throws \InvalidArgumentException + */ +function uri_for($uri) +{ + if ($uri instanceof UriInterface) { + return $uri; + } elseif (is_string($uri)) { + return new Uri($uri); + } + + throw new \InvalidArgumentException('URI must be a string or UriInterface'); +} + +/** + * Create a new stream based on the input type. + * + * Options is an associative array that can contain the following keys: + * - metadata: Array of custom metadata. + * - size: Size of the stream. + * + * @param resource|string|null|int|float|bool|StreamInterface|callable|\Iterator $resource Entity body data + * @param array $options Additional options + * + * @return StreamInterface + * @throws \InvalidArgumentException if the $resource arg is not valid. + */ +function stream_for($resource = '', array $options = []) +{ + if (is_scalar($resource)) { + $stream = fopen('php://temp', 'r+'); + if ($resource !== '') { + fwrite($stream, $resource); + fseek($stream, 0); + } + return new Stream($stream, $options); + } + + switch (gettype($resource)) { + case 'resource': + return new Stream($resource, $options); + case 'object': + if ($resource instanceof StreamInterface) { + return $resource; + } elseif ($resource instanceof \Iterator) { + return new PumpStream(function () use ($resource) { + if (!$resource->valid()) { + return false; + } + $result = $resource->current(); + $resource->next(); + return $result; + }, $options); + } elseif (method_exists($resource, '__toString')) { + return stream_for((string) $resource, $options); + } + break; + case 'NULL': + return new Stream(fopen('php://temp', 'r+'), $options); + } + + if (is_callable($resource)) { + return new PumpStream($resource, $options); + } + + throw new \InvalidArgumentException('Invalid resource type: ' . gettype($resource)); +} + +/** + * Parse an array of header values containing ";" separated data into an + * array of associative arrays representing the header key value pair + * data of the header. When a parameter does not contain a value, but just + * contains a key, this function will inject a key with a '' string value. + * + * @param string|array $header Header to parse into components. + * + * @return array Returns the parsed header values. + */ +function parse_header($header) +{ + static $trimmed = "\"' \n\t\r"; + $params = $matches = []; + + foreach (normalize_header($header) as $val) { + $part = []; + foreach (preg_split('/;(?=([^"]*"[^"]*")*[^"]*$)/', $val) as $kvp) { + if (preg_match_all('/<[^>]+>|[^=]+/', $kvp, $matches)) { + $m = $matches[0]; + if (isset($m[1])) { + $part[trim($m[0], $trimmed)] = trim($m[1], $trimmed); + } else { + $part[] = trim($m[0], $trimmed); + } + } + } + if ($part) { + $params[] = $part; + } + } + + return $params; +} + +/** + * Converts an array of header values that may contain comma separated + * headers into an array of headers with no comma separated values. + * + * @param string|array $header Header to normalize. + * + * @return array Returns the normalized header field values. + */ +function normalize_header($header) +{ + if (!is_array($header)) { + return array_map('trim', explode(',', $header)); + } + + $result = []; + foreach ($header as $value) { + foreach ((array) $value as $v) { + if (strpos($v, ',') === false) { + $result[] = $v; + continue; + } + foreach (preg_split('/,(?=([^"]*"[^"]*")*[^"]*$)/', $v) as $vv) { + $result[] = trim($vv); + } + } + } + + return $result; +} + +/** + * Clone and modify a request with the given changes. + * + * The changes can be one of: + * - method: (string) Changes the HTTP method. + * - set_headers: (array) Sets the given headers. + * - remove_headers: (array) Remove the given headers. + * - body: (mixed) Sets the given body. + * - uri: (UriInterface) Set the URI. + * - query: (string) Set the query string value of the URI. + * - version: (string) Set the protocol version. + * + * @param RequestInterface $request Request to clone and modify. + * @param array $changes Changes to apply. + * + * @return RequestInterface + */ +function modify_request(RequestInterface $request, array $changes) +{ + if (!$changes) { + return $request; + } + + $headers = $request->getHeaders(); + + if (!isset($changes['uri'])) { + $uri = $request->getUri(); + } else { + // Remove the host header if one is on the URI + if ($host = $changes['uri']->getHost()) { + $changes['set_headers']['Host'] = $host; + + if ($port = $changes['uri']->getPort()) { + $standardPorts = ['http' => 80, 'https' => 443]; + $scheme = $changes['uri']->getScheme(); + if (isset($standardPorts[$scheme]) && $port != $standardPorts[$scheme]) { + $changes['set_headers']['Host'] .= ':'.$port; + } + } + } + $uri = $changes['uri']; + } + + if (!empty($changes['remove_headers'])) { + $headers = _caseless_remove($changes['remove_headers'], $headers); + } + + if (!empty($changes['set_headers'])) { + $headers = _caseless_remove(array_keys($changes['set_headers']), $headers); + $headers = $changes['set_headers'] + $headers; + } + + if (isset($changes['query'])) { + $uri = $uri->withQuery($changes['query']); + } + + if ($request instanceof ServerRequestInterface) { + return (new ServerRequest( + isset($changes['method']) ? $changes['method'] : $request->getMethod(), + $uri, + $headers, + isset($changes['body']) ? $changes['body'] : $request->getBody(), + isset($changes['version']) + ? $changes['version'] + : $request->getProtocolVersion(), + $request->getServerParams() + )) + ->withParsedBody($request->getParsedBody()) + ->withQueryParams($request->getQueryParams()) + ->withCookieParams($request->getCookieParams()) + ->withUploadedFiles($request->getUploadedFiles()); + } + + return new Request( + isset($changes['method']) ? $changes['method'] : $request->getMethod(), + $uri, + $headers, + isset($changes['body']) ? $changes['body'] : $request->getBody(), + isset($changes['version']) + ? $changes['version'] + : $request->getProtocolVersion() + ); +} + +/** + * Attempts to rewind a message body and throws an exception on failure. + * + * The body of the message will only be rewound if a call to `tell()` returns a + * value other than `0`. + * + * @param MessageInterface $message Message to rewind + * + * @throws \RuntimeException + */ +function rewind_body(MessageInterface $message) +{ + $body = $message->getBody(); + + if ($body->tell()) { + $body->rewind(); + } +} + +/** + * Safely opens a PHP stream resource using a filename. + * + * When fopen fails, PHP normally raises a warning. This function adds an + * error handler that checks for errors and throws an exception instead. + * + * @param string $filename File to open + * @param string $mode Mode used to open the file + * + * @return resource + * @throws \RuntimeException if the file cannot be opened + */ +function try_fopen($filename, $mode) +{ + $ex = null; + set_error_handler(function () use ($filename, $mode, &$ex) { + $ex = new \RuntimeException(sprintf( + 'Unable to open %s using mode %s: %s', + $filename, + $mode, + func_get_args()[1] + )); + }); + + $handle = fopen($filename, $mode); + restore_error_handler(); + + if ($ex) { + /** @var $ex \RuntimeException */ + throw $ex; + } + + return $handle; +} + +/** + * Copy the contents of a stream into a string until the given number of + * bytes have been read. + * + * @param StreamInterface $stream Stream to read + * @param int $maxLen Maximum number of bytes to read. Pass -1 + * to read the entire stream. + * @return string + * @throws \RuntimeException on error. + */ +function copy_to_string(StreamInterface $stream, $maxLen = -1) +{ + $buffer = ''; + + if ($maxLen === -1) { + while (!$stream->eof()) { + $buf = $stream->read(1048576); + // Using a loose equality here to match on '' and false. + if ($buf == null) { + break; + } + $buffer .= $buf; + } + return $buffer; + } + + $len = 0; + while (!$stream->eof() && $len < $maxLen) { + $buf = $stream->read($maxLen - $len); + // Using a loose equality here to match on '' and false. + if ($buf == null) { + break; + } + $buffer .= $buf; + $len = strlen($buffer); + } + + return $buffer; +} + +/** + * Copy the contents of a stream into another stream until the given number + * of bytes have been read. + * + * @param StreamInterface $source Stream to read from + * @param StreamInterface $dest Stream to write to + * @param int $maxLen Maximum number of bytes to read. Pass -1 + * to read the entire stream. + * + * @throws \RuntimeException on error. + */ +function copy_to_stream( + StreamInterface $source, + StreamInterface $dest, + $maxLen = -1 +) { + $bufferSize = 8192; + + if ($maxLen === -1) { + while (!$source->eof()) { + if (!$dest->write($source->read($bufferSize))) { + break; + } + } + } else { + $remaining = $maxLen; + while ($remaining > 0 && !$source->eof()) { + $buf = $source->read(min($bufferSize, $remaining)); + $len = strlen($buf); + if (!$len) { + break; + } + $remaining -= $len; + $dest->write($buf); + } + } +} + +/** + * Calculate a hash of a Stream + * + * @param StreamInterface $stream Stream to calculate the hash for + * @param string $algo Hash algorithm (e.g. md5, crc32, etc) + * @param bool $rawOutput Whether or not to use raw output + * + * @return string Returns the hash of the stream + * @throws \RuntimeException on error. + */ +function hash( + StreamInterface $stream, + $algo, + $rawOutput = false +) { + $pos = $stream->tell(); + + if ($pos > 0) { + $stream->rewind(); + } + + $ctx = hash_init($algo); + while (!$stream->eof()) { + hash_update($ctx, $stream->read(1048576)); + } + + $out = hash_final($ctx, (bool) $rawOutput); + $stream->seek($pos); + + return $out; +} + +/** + * Read a line from the stream up to the maximum allowed buffer length + * + * @param StreamInterface $stream Stream to read from + * @param int $maxLength Maximum buffer length + * + * @return string + */ +function readline(StreamInterface $stream, $maxLength = null) +{ + $buffer = ''; + $size = 0; + + while (!$stream->eof()) { + // Using a loose equality here to match on '' and false. + if (null == ($byte = $stream->read(1))) { + return $buffer; + } + $buffer .= $byte; + // Break when a new line is found or the max length - 1 is reached + if ($byte === "\n" || ++$size === $maxLength - 1) { + break; + } + } + + return $buffer; +} + +/** + * Parses a request message string into a request object. + * + * @param string $message Request message string. + * + * @return Request + */ +function parse_request($message) +{ + $data = _parse_message($message); + $matches = []; + if (!preg_match('/^[\S]+\s+([a-zA-Z]+:\/\/|\/).*/', $data['start-line'], $matches)) { + throw new \InvalidArgumentException('Invalid request string'); + } + $parts = explode(' ', $data['start-line'], 3); + $version = isset($parts[2]) ? explode('/', $parts[2])[1] : '1.1'; + + $request = new Request( + $parts[0], + $matches[1] === '/' ? _parse_request_uri($parts[1], $data['headers']) : $parts[1], + $data['headers'], + $data['body'], + $version + ); + + return $matches[1] === '/' ? $request : $request->withRequestTarget($parts[1]); +} + +/** + * Parses a response message string into a response object. + * + * @param string $message Response message string. + * + * @return Response + */ +function parse_response($message) +{ + $data = _parse_message($message); + // According to https://tools.ietf.org/html/rfc7230#section-3.1.2 the space + // between status-code and reason-phrase is required. But browsers accept + // responses without space and reason as well. + if (!preg_match('/^HTTP\/.* [0-9]{3}( .*|$)/', $data['start-line'])) { + throw new \InvalidArgumentException('Invalid response string: ' . $data['start-line']); + } + $parts = explode(' ', $data['start-line'], 3); + + return new Response( + $parts[1], + $data['headers'], + $data['body'], + explode('/', $parts[0])[1], + isset($parts[2]) ? $parts[2] : null + ); +} + +/** + * 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 $urlEncoding How the query string is encoded + * + * @return array + */ +function parse_query($str, $urlEncoding = true) +{ + $result = []; + + if ($str === '') { + return $result; + } + + if ($urlEncoding === true) { + $decoder = function ($value) { + return rawurldecode(str_replace('+', ' ', $value)); + }; + } elseif ($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 (!isset($result[$key])) { + $result[$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_query() 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. + * @return string + */ +function build_query(array $params, $encoding = PHP_QUERY_RFC3986) +{ + if (!$params) { + return ''; + } + + if ($encoding === false) { + $encoder = function ($str) { 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 = $encoder($k); + if (!is_array($v)) { + $qs .= $k; + if ($v !== null) { + $qs .= '=' . $encoder($v); + } + $qs .= '&'; + } else { + foreach ($v as $vv) { + $qs .= $k; + if ($vv !== null) { + $qs .= '=' . $encoder($vv); + } + $qs .= '&'; + } + } + } + + return $qs ? (string) substr($qs, 0, -1) : ''; +} + +/** + * Determines the mimetype of a file by looking at its extension. + * + * @param $filename + * + * @return null|string + */ +function mimetype_from_filename($filename) +{ + return mimetype_from_extension(pathinfo($filename, PATHINFO_EXTENSION)); +} + +/** + * Maps a file extensions to a mimetype. + * + * @param $extension string The file extension. + * + * @return string|null + * @link http://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x/conf/mime.types + */ +function mimetype_from_extension($extension) +{ + static $mimetypes = [ + '3gp' => 'video/3gpp', + '7z' => 'application/x-7z-compressed', + 'aac' => 'audio/x-aac', + 'ai' => 'application/postscript', + 'aif' => 'audio/x-aiff', + 'asc' => 'text/plain', + 'asf' => 'video/x-ms-asf', + 'atom' => 'application/atom+xml', + 'avi' => 'video/x-msvideo', + 'bmp' => 'image/bmp', + 'bz2' => 'application/x-bzip2', + 'cer' => 'application/pkix-cert', + 'crl' => 'application/pkix-crl', + 'crt' => 'application/x-x509-ca-cert', + 'css' => 'text/css', + 'csv' => 'text/csv', + 'cu' => 'application/cu-seeme', + 'deb' => 'application/x-debian-package', + 'doc' => 'application/msword', + 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', + 'dvi' => 'application/x-dvi', + 'eot' => 'application/vnd.ms-fontobject', + 'eps' => 'application/postscript', + 'epub' => 'application/epub+zip', + 'etx' => 'text/x-setext', + 'flac' => 'audio/flac', + 'flv' => 'video/x-flv', + 'gif' => 'image/gif', + 'gz' => 'application/gzip', + 'htm' => 'text/html', + 'html' => 'text/html', + 'ico' => 'image/x-icon', + 'ics' => 'text/calendar', + 'ini' => 'text/plain', + 'iso' => 'application/x-iso9660-image', + 'jar' => 'application/java-archive', + 'jpe' => 'image/jpeg', + 'jpeg' => 'image/jpeg', + 'jpg' => 'image/jpeg', + 'js' => 'text/javascript', + 'json' => 'application/json', + 'latex' => 'application/x-latex', + 'log' => 'text/plain', + 'm4a' => 'audio/mp4', + 'm4v' => 'video/mp4', + 'mid' => 'audio/midi', + 'midi' => 'audio/midi', + 'mov' => 'video/quicktime', + 'mkv' => 'video/x-matroska', + 'mp3' => 'audio/mpeg', + 'mp4' => 'video/mp4', + 'mp4a' => 'audio/mp4', + 'mp4v' => 'video/mp4', + 'mpe' => 'video/mpeg', + 'mpeg' => 'video/mpeg', + 'mpg' => 'video/mpeg', + 'mpg4' => 'video/mp4', + 'oga' => 'audio/ogg', + 'ogg' => 'audio/ogg', + 'ogv' => 'video/ogg', + 'ogx' => 'application/ogg', + 'pbm' => 'image/x-portable-bitmap', + 'pdf' => 'application/pdf', + 'pgm' => 'image/x-portable-graymap', + 'png' => 'image/png', + 'pnm' => 'image/x-portable-anymap', + 'ppm' => 'image/x-portable-pixmap', + 'ppt' => 'application/vnd.ms-powerpoint', + 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', + 'ps' => 'application/postscript', + 'qt' => 'video/quicktime', + 'rar' => 'application/x-rar-compressed', + 'ras' => 'image/x-cmu-raster', + 'rss' => 'application/rss+xml', + 'rtf' => 'application/rtf', + 'sgm' => 'text/sgml', + 'sgml' => 'text/sgml', + 'svg' => 'image/svg+xml', + 'swf' => 'application/x-shockwave-flash', + 'tar' => 'application/x-tar', + 'tif' => 'image/tiff', + 'tiff' => 'image/tiff', + 'torrent' => 'application/x-bittorrent', + 'ttf' => 'application/x-font-ttf', + 'txt' => 'text/plain', + 'wav' => 'audio/x-wav', + 'webm' => 'video/webm', + 'wma' => 'audio/x-ms-wma', + 'wmv' => 'video/x-ms-wmv', + 'woff' => 'application/x-font-woff', + 'wsdl' => 'application/wsdl+xml', + 'xbm' => 'image/x-xbitmap', + 'xls' => 'application/vnd.ms-excel', + 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', + 'xml' => 'application/xml', + 'xpm' => 'image/x-xpixmap', + 'xwd' => 'image/x-xwindowdump', + 'yaml' => 'text/yaml', + 'yml' => 'text/yaml', + 'zip' => 'application/zip', + ]; + + $extension = strtolower($extension); + + return isset($mimetypes[$extension]) + ? $mimetypes[$extension] + : null; +} + +/** + * Parses an HTTP message into an associative array. + * + * The array contains the "start-line" key containing the start line of + * the message, "headers" key containing an associative array of header + * array values, and a "body" key containing the body of the message. + * + * @param string $message HTTP request or response to parse. + * + * @return array + * @internal + */ +function _parse_message($message) +{ + if (!$message) { + throw new \InvalidArgumentException('Invalid message'); + } + + $message = ltrim($message, "\r\n"); + + $messageParts = preg_split("/\r?\n\r?\n/", $message, 2); + + if ($messageParts === false || count($messageParts) !== 2) { + throw new \InvalidArgumentException('Invalid message: Missing header delimiter'); + } + + list($rawHeaders, $body) = $messageParts; + $rawHeaders .= "\r\n"; // Put back the delimiter we split previously + $headerParts = preg_split("/\r?\n/", $rawHeaders, 2); + + if ($headerParts === false || count($headerParts) !== 2) { + throw new \InvalidArgumentException('Invalid message: Missing status line'); + } + + list($startLine, $rawHeaders) = $headerParts; + + if (preg_match("/(?:^HTTP\/|^[A-Z]+ \S+ HTTP\/)(\d+(?:\.\d+)?)/i", $startLine, $matches) && $matches[1] === '1.0') { + // Header folding is deprecated for HTTP/1.1, but allowed in HTTP/1.0 + $rawHeaders = preg_replace(Rfc7230::HEADER_FOLD_REGEX, ' ', $rawHeaders); + } + + /** @var array[] $headerLines */ + $count = preg_match_all(Rfc7230::HEADER_REGEX, $rawHeaders, $headerLines, PREG_SET_ORDER); + + // If these aren't the same, then one line didn't match and there's an invalid header. + if ($count !== substr_count($rawHeaders, "\n")) { + // Folding is deprecated, see https://tools.ietf.org/html/rfc7230#section-3.2.4 + if (preg_match(Rfc7230::HEADER_FOLD_REGEX, $rawHeaders)) { + throw new \InvalidArgumentException('Invalid header syntax: Obsolete line folding'); + } + + throw new \InvalidArgumentException('Invalid header syntax'); + } + + $headers = []; + + foreach ($headerLines as $headerLine) { + $headers[$headerLine[1]][] = $headerLine[2]; + } + + return [ + 'start-line' => $startLine, + 'headers' => $headers, + 'body' => $body, + ]; +} + +/** + * Constructs a URI for an HTTP request message. + * + * @param string $path Path from the start-line + * @param array $headers Array of headers (each value an array). + * + * @return string + * @internal + */ +function _parse_request_uri($path, array $headers) +{ + $hostKey = array_filter(array_keys($headers), function ($k) { + return strtolower($k) === 'host'; + }); + + // If no host is found, then a full URI cannot be constructed. + if (!$hostKey) { + return $path; + } + + $host = $headers[reset($hostKey)][0]; + $scheme = substr($host, -4) === ':443' ? 'https' : 'http'; + + return $scheme . '://' . $host . '/' . ltrim($path, '/'); +} + +/** + * Get a short summary of the message body + * + * Will return `null` if the response is not printable. + * + * @param MessageInterface $message The message to get the body summary + * @param int $truncateAt The maximum allowed size of the summary + * + * @return null|string + */ +function get_message_body_summary(MessageInterface $message, $truncateAt = 120) +{ + $body = $message->getBody(); + + if (!$body->isSeekable() || !$body->isReadable()) { + return null; + } + + $size = $body->getSize(); + + if ($size === 0) { + return null; + } + + $summary = $body->read($truncateAt); + $body->rewind(); + + if ($size > $truncateAt) { + $summary .= ' (truncated...)'; + } + + // Matches any printable character, including unicode characters: + // letters, marks, numbers, punctuation, spacing, and separators. + if (preg_match('/[^\pL\pM\pN\pP\pS\pZ\n\r\t]/', $summary)) { + return null; + } + + return $summary; +} + +/** @internal */ +function _caseless_remove($keys, array $data) +{ + $result = []; + + foreach ($keys as &$key) { + $key = strtolower($key); + } + + foreach ($data as $k => $v) { + if (!in_array(strtolower($k), $keys)) { + $result[$k] = $v; + } + } + + return $result; +} |