| System | Linux campsych.vs.mythic-beasts.com 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 | 
| Build Date | Jul 27 2025 11:10:22 | 
| Server API | FPM/FastCGI | 
| Virtual Directory Support | disabled | 
| Configuration File (php.ini) Path | /etc/php/7.4/fpm | 
| Loaded Configuration File | /etc/php/7.4/fpm/php.ini | 
| Scan this dir for additional .ini files | /etc/php/7.4/fpm/conf.d | 
| Additional .ini files parsed | /etc/php/7.4/fpm/conf.d/10-mysqlnd.ini,
/etc/php/7.4/fpm/conf.d/10-opcache.ini,
/etc/php/7.4/fpm/conf.d/10-pdo.ini,
/etc/php/7.4/fpm/conf.d/20-calendar.ini,
/etc/php/7.4/fpm/conf.d/20-ctype.ini,
/etc/php/7.4/fpm/conf.d/20-exif.ini,
/etc/php/7.4/fpm/conf.d/20-ffi.ini,
/etc/php/7.4/fpm/conf.d/20-fileinfo.ini,
/etc/php/7.4/fpm/conf.d/20-ftp.ini,
/etc/php/7.4/fpm/conf.d/20-gettext.ini,
/etc/php/7.4/fpm/conf.d/20-iconv.ini,
/etc/php/7.4/fpm/conf.d/20-json.ini,
/etc/php/7.4/fpm/conf.d/20-mysqli.ini,
/etc/php/7.4/fpm/conf.d/20-pdo_mysql.ini,
/etc/php/7.4/fpm/conf.d/20-phar.ini,
/etc/php/7.4/fpm/conf.d/20-posix.ini,
/etc/php/7.4/fpm/conf.d/20-readline.ini,
/etc/php/7.4/fpm/conf.d/20-shmop.ini,
/etc/php/7.4/fpm/conf.d/20-sockets.ini,
/etc/php/7.4/fpm/conf.d/20-sysvmsg.ini,
/etc/php/7.4/fpm/conf.d/20-sysvsem.ini,
/etc/php/7.4/fpm/conf.d/20-sysvshm.ini,
/etc/php/7.4/fpm/conf.d/20-tokenizer.ini | 
| PHP API | 20190902 | 
| PHP Extension | 20190902 | 
| Zend Extension | 320190902 | 
| Zend Extension Build | API320190902,NTS | 
| PHP Extension Build | API20190902,NTS | 
| Debug Build | no | 
| Thread Safety | disabled | 
| Zend Signal Handling | enabled | 
| Zend Memory Manager | enabled | 
| Zend Multibyte Support | disabled | 
| IPv6 Support | enabled | 
| DTrace Support | available, disabled | 
| Registered PHP Streams | https, ftps, compress.zlib, php, file, glob, data, http, ftp, phar | 
| Registered Stream Socket Transports | tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2, tlsv1.3 | 
| Registered Stream Filters | zlib.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, convert.iconv.* | 
| Directive | Local Value | Master Value | 
|---|
| allow_url_fopen | On | On | 
| allow_url_include | Off | Off | 
| arg_separator.input | & | & | 
| arg_separator.output | & | & | 
| auto_append_file | no value | no value | 
| auto_globals_jit | On | On | 
| auto_prepend_file | no value | no value | 
| browscap | no value | no value | 
| default_charset | UTF-8 | UTF-8 | 
| default_mimetype | text/html | text/html | 
| disable_classes | no value | no value | 
| disable_functions | pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, | pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, | 
| display_errors | Off | Off | 
| display_startup_errors | Off | Off | 
| doc_root | no value | no value | 
| docref_ext | no value | no value | 
| docref_root | no value | no value | 
| enable_dl | Off | Off | 
| enable_post_data_reading | On | On | 
| error_append_string | no value | no value | 
| error_log | no value | no value | 
| error_prepend_string | no value | no value | 
| error_reporting | 22527 | 22527 | 
| expose_php | Off | Off | 
| extension_dir | /usr/lib/php/20190902 | /usr/lib/php/20190902 | 
| file_uploads | On | On | 
| hard_timeout | 2 | 2 | 
| highlight.comment | #FF8000 | #FF8000 | 
| highlight.default | #0000BB | #0000BB | 
| highlight.html | #000000 | #000000 | 
| highlight.keyword | #007700 | #007700 | 
| highlight.string | #DD0000 | #DD0000 | 
| html_errors | On | On | 
| ignore_repeated_errors | Off | Off | 
| ignore_repeated_source | Off | Off | 
| ignore_user_abort | Off | Off | 
| implicit_flush | Off | Off | 
| include_path | .:/usr/share/php | .:/usr/share/php | 
| input_encoding | no value | no value | 
| internal_encoding | no value | no value | 
| log_errors | On | On | 
| log_errors_max_len | 1024 | 1024 | 
| mail.add_x_header | Off | Off | 
| mail.force_extra_parameters | no value | no value | 
| mail.log | no value | no value | 
| max_execution_time | 30 | 30 | 
| max_file_uploads | 20 | 20 | 
| max_input_nesting_level | 64 | 64 | 
| max_input_time | 60 | 60 | 
| max_input_vars | 1000 | 1000 | 
| max_multipart_body_parts | -1 | -1 | 
| memory_limit | 128M | 128M | 
| open_basedir | no value | no value | 
| output_buffering | 4096 | 4096 | 
| output_encoding | no value | no value | 
| output_handler | no value | no value | 
| post_max_size | 8M | 8M | 
| precision | 14 | 14 | 
| realpath_cache_size | 4096K | 4096K | 
| realpath_cache_ttl | 120 | 120 | 
| register_argc_argv | Off | Off | 
| report_memleaks | On | On | 
| report_zend_debug | On | On | 
| request_order | GP | GP | 
| sendmail_from | no value | no value | 
| sendmail_path | /usr/sbin/sendmail -t -i | /usr/sbin/sendmail -t -i | 
| serialize_precision | -1 | -1 | 
| short_open_tag | Off | Off | 
| SMTP | localhost | localhost | 
| smtp_port | 25 | 25 | 
| sys_temp_dir | no value | no value | 
| syslog.facility | LOG_USER | LOG_USER | 
| syslog.filter | no-ctrl | no-ctrl | 
| syslog.ident | php | php | 
| track_errors | Off | Off | 
| unserialize_callback_func | no value | no value | 
| upload_max_filesize | 2M | 2M | 
| upload_tmp_dir | no value | no value | 
| user_dir | no value | no value | 
| user_ini.cache_ttl | 300 | 300 | 
| user_ini.filename | .user.ini | .user.ini | 
| variables_order | GPCS | GPCS | 
| xmlrpc_error_number | 0 | 0 | 
| xmlrpc_errors | Off | Off | 
| zend.assertions | -1 | -1 | 
| zend.detect_unicode | On | On | 
| zend.enable_gc | On | On | 
| zend.exception_ignore_args | On | On | 
| zend.multibyte | Off | Off | 
| zend.script_encoding | no value | no value | 
| zend.signal_check | Off | Off | 
| SPL support | enabled | 
|---|
| Interfaces | OuterIterator, RecursiveIterator, SeekableIterator, SplObserver, SplSubject | 
| Classes | AppendIterator, ArrayIterator, ArrayObject, BadFunctionCallException, BadMethodCallException, CachingIterator, CallbackFilterIterator, DirectoryIterator, DomainException, EmptyIterator, FilesystemIterator, FilterIterator, GlobIterator, InfiniteIterator, InvalidArgumentException, IteratorIterator, LengthException, LimitIterator, LogicException, MultipleIterator, NoRewindIterator, OutOfBoundsException, OutOfRangeException, OverflowException, ParentIterator, RangeException, RecursiveArrayIterator, RecursiveCachingIterator, RecursiveCallbackFilterIterator, RecursiveDirectoryIterator, RecursiveFilterIterator, RecursiveIteratorIterator, RecursiveRegexIterator, RecursiveTreeIterator, RegexIterator, RuntimeException, SplDoublyLinkedList, SplFileInfo, SplFileObject, SplFixedArray, SplHeap, SplMinHeap, SplMaxHeap, SplObjectStorage, SplPriorityQueue, SplQueue, SplStack, SplTempFileObject, UnderflowException, UnexpectedValueException | 
| Variable | Value | 
|---|
| $_REQUEST['a'] | Array
(
    [0] => <a href=http://www.hotel-discount.com/cheap-hotels-in-portugal/>Cheap Hotels within Portugal</a>
)
 | 
| $_GET['a'] | Array
(
    [0] => <a href=http://www.hotel-discount.com/cheap-hotels-in-portugal/>Cheap Hotels within Portugal</a>
)
 | 
| $_SERVER['USER'] | www-data | 
| $_SERVER['HOME'] | /var/www | 
| $_SERVER['SCRIPT_NAME'] | /jdmollon/papers/hello.php | 
| $_SERVER['REQUEST_URI'] | /jdmollon/papers/hello.php?a%5B%5D=%3Ca+href%3Dhttp%3A%2F%2Fwww.hotel-discount.com%2Fcheap-hotels-in-portugal%2F%3ECheap+Hotels+within+Portugal%3C%2Fa%3E | 
| $_SERVER['QUERY_STRING'] | a%5B%5D=%3Ca+href%3Dhttp%3A%2F%2Fwww.hotel-discount.com%2Fcheap-hotels-in-portugal%2F%3ECheap+Hotels+within+Portugal%3C%2Fa%3E | 
| $_SERVER['REQUEST_METHOD'] | GET | 
| $_SERVER['SERVER_PROTOCOL'] | HTTP/1.1 | 
| $_SERVER['GATEWAY_INTERFACE'] | CGI/1.1 | 
| $_SERVER['REMOTE_PORT'] | 63238 | 
| $_SERVER['SCRIPT_FILENAME'] | /var/www/vision.psychol.cam.ac.uk/jdmollon/papers/hello.php | 
| $_SERVER['SERVER_ADMIN'] | support@mythic-beasts.com | 
| $_SERVER['CONTEXT_DOCUMENT_ROOT'] | /var/www/vision.psychol.cam.ac.uk | 
| $_SERVER['CONTEXT_PREFIX'] | no value | 
| $_SERVER['REQUEST_SCHEME'] | http | 
| $_SERVER['DOCUMENT_ROOT'] | /var/www/vision.psychol.cam.ac.uk | 
| $_SERVER['REMOTE_ADDR'] | 216.73.216.27 | 
| $_SERVER['SERVER_PORT'] | 80 | 
| $_SERVER['SERVER_ADDR'] | 176.126.240.38 | 
| $_SERVER['SERVER_NAME'] | vision.psychol.cam.ac.uk | 
| $_SERVER['SERVER_SOFTWARE'] | Apache/2.4.65 (Debian) | 
| $_SERVER['SERVER_SIGNATURE'] | <address>Apache/2.4.65 (Debian) Server at vision.psychol.cam.ac.uk Port 80</address> | 
| $_SERVER['PATH'] | /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin | 
| $_SERVER['HTTP_CONNECTION'] | keep-alive | 
| $_SERVER['HTTP_CACHE_CONTROL'] | max-age=0 | 
| $_SERVER['HTTP_X_FORWARDED_FOR'] | 10.1.135.28 | 
| $_SERVER['HTTP_VIA'] | 1.1 squid-proxy-5b5d847c96-dn5n8 (squid/6.13) | 
| $_SERVER['HTTP_HOST'] | vision.psychol.cam.ac.uk | 
| $_SERVER['HTTP_ACCEPT_ENCODING'] | gzip, br, zstd, deflate | 
| $_SERVER['HTTP_USER_AGENT'] | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) | 
| $_SERVER['HTTP_ACCEPT'] | */* | 
| $_SERVER['proxy-nokeepalive'] | 1 | 
| $_SERVER['FCGI_ROLE'] | RESPONDER | 
| $_SERVER['PHP_SELF'] | /jdmollon/papers/hello.php | 
| $_SERVER['REQUEST_TIME_FLOAT'] | 1761915966.4035 | 
| $_SERVER['REQUEST_TIME'] | 1761915966 | 
| PHP Authors | 
|---|
| Contribution | Authors | 
|---|
| Zend Scripting Language Engine | Andi Gutmans, Zeev Suraski, Stanislav Malyshev, Marcus Boerger, Dmitry Stogov, Xinchen Hui, Nikita Popov | 
| Extension Module API | Andi Gutmans, Zeev Suraski, Andrei Zmievski | 
| UNIX Build and Modularization | Stig Bakken, Sascha Schumann, Jani Taskinen, Peter Kokot | 
| Windows Support | Shane Caraveo, Zeev Suraski, Wez Furlong, Pierre-Alain Joye, Anatol Belski, Kalle Sommer Nielsen | 
| Server API (SAPI) Abstraction Layer | Andi Gutmans, Shane Caraveo, Zeev Suraski | 
| Streams Abstraction Layer | Wez Furlong, Sara Golemon | 
| PHP Data Objects Layer | Wez Furlong, Marcus Boerger, Sterling Hughes, George Schlossnagle, Ilia Alshanetsky | 
| Output Handler | Zeev Suraski, Thies C. Arntzen, Marcus Boerger, Michael Wallner | 
| Consistent 64 bit support | Anthony Ferrara, Anatol Belski | 
| Module Authors | 
|---|
| Module | Authors | 
|---|
| BC Math | Andi Gutmans | 
| Bzip2 | Sterling Hughes | 
| Calendar | Shane Caraveo, Colin Viebrock, Hartmut Holzgraefe, Wez Furlong | 
| COM and .Net | Wez Furlong | 
| ctype | Hartmut Holzgraefe | 
| cURL | Sterling Hughes | 
| Date/Time Support | Derick Rethans | 
| DB-LIB (MS SQL, Sybase) | Wez Furlong, Frank M. Kromann, Adam Baratz | 
| DBA | Sascha Schumann, Marcus Boerger | 
| DOM | Christian Stocker, Rob Richards, Marcus Boerger | 
| enchant | Pierre-Alain Joye, Ilia Alshanetsky | 
| EXIF | Rasmus Lerdorf, Marcus Boerger | 
| FFI | Dmitry Stogov | 
| fileinfo | Ilia Alshanetsky, Pierre Alain Joye, Scott MacVicar, Derick Rethans, Anatol Belski | 
| Firebird driver for PDO | Ard Biesheuvel | 
| FTP | Stefan Esser, Andrew Skalski | 
| GD imaging | Rasmus Lerdorf, Stig Bakken, Jim Winstead, Jouni Ahto, Ilia Alshanetsky, Pierre-Alain Joye, Marcus Boerger | 
| GetText | Alex Plotnick | 
| GNU GMP support | Stanislav Malyshev | 
| Iconv | Rui Hirokawa, Stig Bakken, Moriyoshi Koizumi | 
| IMAP | Rex Logan, Mark Musone, Brian Wang, Kaj-Michael Lang, Antoni Pamies Olive, Rasmus Lerdorf, Andrew Skalski, Chuck Hagenbuch, Daniel R Kalowsky | 
| Input Filter | Rasmus Lerdorf, Derick Rethans, Pierre-Alain Joye, Ilia Alshanetsky | 
| Internationalization | Ed Batutis, Vladimir Iordanov, Dmitry Lakhtyuk, Stanislav Malyshev, Vadim Savchuk, Kirti Velankar | 
| JSON | Jakub Zelenka, Omar Kilani, Scott MacVicar | 
| LDAP | Amitay Isaacs, Eric Warnke, Rasmus Lerdorf, Gerrit Thomson, Stig Venaas | 
| LIBXML | Christian Stocker, Rob Richards, Marcus Boerger, Wez Furlong, Shane Caraveo | 
| Multibyte String Functions | Tsukada Takuya, Rui Hirokawa | 
| MySQL driver for PDO | George Schlossnagle, Wez Furlong, Ilia Alshanetsky, Johannes Schlueter | 
| MySQLi | Zak Greant, Georg Richter, Andrey Hristov, Ulf Wendel | 
| MySQLnd | Andrey Hristov, Ulf Wendel, Georg Richter, Johannes Schlüter | 
| OCI8 | Stig Bakken, Thies C. Arntzen, Andy Sautins, David Benson, Maxim Maletsky, Harald Radi, Antony Dovgal, Andi Gutmans, Wez Furlong, Christopher Jones, Oracle Corporation | 
| ODBC driver for PDO | Wez Furlong | 
| ODBC | Stig Bakken, Andreas Karajannis, Frank M. Kromann, Daniel R. Kalowsky | 
| Opcache | Andi Gutmans, Zeev Suraski, Stanislav Malyshev, Dmitry Stogov, Xinchen Hui | 
| OpenSSL | Stig Venaas, Wez Furlong, Sascha Kettler, Scott MacVicar | 
| Oracle (OCI) driver for PDO | Wez Furlong | 
| pcntl | Jason Greene, Arnaud Le Blanc | 
| Perl Compatible Regexps | Andrei Zmievski | 
| PHP Archive | Gregory Beaver, Marcus Boerger | 
| PHP Data Objects | Wez Furlong, Marcus Boerger, Sterling Hughes, George Schlossnagle, Ilia Alshanetsky | 
| PHP hash | Sara Golemon, Rasmus Lerdorf, Stefan Esser, Michael Wallner, Scott MacVicar | 
| Posix | Kristian Koehntopp | 
| PostgreSQL driver for PDO | Edin Kadribasic, Ilia Alshanetsky | 
| PostgreSQL | Jouni Ahto, Zeev Suraski, Yasuo Ohgaki, Chris Kings-Lynne | 
| Pspell | Vlad Krupin | 
| Readline | Thies C. Arntzen | 
| Reflection | Marcus Boerger, Timm Friebe, George Schlossnagle, Andrei Zmievski, Johannes Schlueter | 
| Sessions | Sascha Schumann, Andrei Zmievski | 
| Shared Memory Operations | Slava Poliakov, Ilia Alshanetsky | 
| SimpleXML | Sterling Hughes, Marcus Boerger, Rob Richards | 
| SNMP | Rasmus Lerdorf, Harrie Hazewinkel, Mike Jackson, Steven Lawrance, Johann Hanne, Boris Lytochkin | 
| SOAP | Brad Lafountain, Shane Caraveo, Dmitry Stogov | 
| Sockets | Chris Vandomelen, Sterling Hughes, Daniel Beulshausen, Jason Greene | 
| Sodium | Frank Denis | 
| SPL | Marcus Boerger, Etienne Kneuss | 
| SQLite 3.x driver for PDO | Wez Furlong | 
| SQLite3 | Scott MacVicar, Ilia Alshanetsky, Brad Dewar | 
| System V Message based IPC | Wez Furlong | 
| System V Semaphores | Tom May | 
| System V Shared Memory | Christian Cartus | 
| tidy | John Coggeshall, Ilia Alshanetsky | 
| tokenizer | Andrei Zmievski, Johannes Schlueter | 
| XML | Stig Bakken, Thies C. Arntzen, Sterling Hughes | 
| XMLReader | Rob Richards | 
| xmlrpc | Dan Libby | 
| XMLWriter | Rob Richards, Pierre-Alain Joye | 
| XSL | Christian Stocker, Rob Richards | 
| Zip | Pierre-Alain Joye, Remi Collet | 
| Zlib | Rasmus Lerdorf, Stefan Roehrich, Zeev Suraski, Jade Nicoletti, Michael Wallner |