Arrays - PHP Basics Test Chamber

Arrays Examples

An array is a special variable that can hold more than one value. In PHP an array has no pre-determined length and will automatically expand to fit any number of values

Wednesday

Array

array(7) { [0]=> string(6) "Sunday" [1]=> string(6) "Monday" [2]=> string(7) "Tuesday" [3]=> string(9) "Wednesday" [4]=> string(8) "Thursday" [5]=> string(6) "Friday" [6]=> string(8) "Saturday" }

Array
(
    [0] => Sunday
    [1] => Monday
    [2] => Tuesday
    [3] => Wednesday
    [4] => Thursday
    [5] => Friday
    [6] => Saturday
)

http://google.com

array(6) { ["facebook"]=> string(19) "http://facebook.com" ["google"]=> string(17) "http://google.com" ["pinterest"]=> string(20) "http://pinterest.com" ["twitter"]=> string(18) "http://twitter.com" ["mashable"]=> string(19) "http://mashable.com" ["humber"]=> string(16) "http://humber.ca" }

Array
(
    [facebook] => http://facebook.com
    [google] => http://google.com
    [pinterest] => http://pinterest.com
    [twitter] => http://twitter.com
    [mashable] => http://mashable.com
    [humber] => http://humber.ca
)

Load and Array with Glob Function

Array
(
    [0] => images/Gallery/thumbnails/Mountains.jpg
    [1] => images/Gallery/thumbnails/Retro-Downtown.jpg
    [2] => images/Gallery/thumbnails/Skyline-2.jpg
    [3] => images/Gallery/thumbnails/Skyline-4.jpg
    [4] => images/Gallery/thumbnails/Skyline.jpg
    [5] => images/Gallery/thumbnails/Train-Station.jpg
    [6] => images/Gallery/thumbnails/Vancouver-Library.jpg
    [7] => images/Gallery/thumbnails/Vancouver-Port.jpg
    [8] => images/Gallery/thumbnails/boats.jpg
)

Mountains
Retro Downtown
Skyline 2
Skyline 4
Skyline
Train Station
Vancouver Library
Vancouver Port
Boats

Superglobal Arrays in PHP

Predefined arrays that automatically populate for you by PHP.

Examples:

$_SERVER: information about the server environment.
$_POST: all form data that was submitted using th POST method.
$_GET: all form data that was submitted using the GET method.
$_FILES: all the uploaded files submitted through a form.
$_REQUEST: all the info from a form submission (combination of get/post/file) - avoid using this as it can introduce security problems.
$_COOKIE: data stored in a browser cookie.
$_SESSION: stores browser session data on the server.

Entire PHP Server Array

Array
(
    [LSPHP_ENABLE_USER_INI] => on
    [PATH] => /usr/local/bin:/usr/bin:/bin
    [TEMP] => /tmp
    [TMP] => /tmp
    [TMPDIR] => /tmp
    [PWD] => /
    [HTTP_ACCEPT] => */*
    [HTTP_ACCEPT_ENCODING] => gzip, br, zstd, deflate
    [CONTENT_LENGTH] => 0
    [HTTP_HOST] => phpbasics.brettmcsherry.com
    [HTTP_USER_AGENT] => Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
    [UNIQUE_ID] => aVEDk-7jlFchf5OONfDmowADpSE
    [USER_ID] => 9071211
    [DATABASE_SERVER] => localhost
    [SITE_ROOT] => /home/ao9fd8p3td27/domains/phpbasics.brettmcsherry.com/html
    [SITE_CGIROOT] => /home/ao9fd8p3td27/domains/phpbasics.brettmcsherry.com/html/cgi-bin
    [SITE_HTMLROOT] => /home/ao9fd8p3td27/domains/phpbasics.brettmcsherry.com/html
    [HTTPS] => on
    [SSL_TLS_SNI] => phpbasics.brettmcsherry.com
    [HTTP2] => on
    [H2PUSH] => off
    [H2_PUSH] => off
    [H2_PUSHED] => 
    [H2_PUSHED_ON] => 
    [H2_STREAM_ID] => 1
    [H2_STREAM_TAG] => 358421-458-1
    [SERVER_SIGNATURE] => 
    [SERVER_SOFTWARE] => Apache
    [SERVER_NAME] => phpbasics.brettmcsherry.com
    [SERVER_ADDR] => 208.109.51.85
    [SERVER_PORT] => 443
    [REMOTE_ADDR] => 216.73.216.122
    [DOCUMENT_ROOT] => /home/ao9fd8p3td27/domains/phpbasics.brettmcsherry.com/html
    [REQUEST_SCHEME] => https
    [CONTEXT_PREFIX] => 
    [CONTEXT_DOCUMENT_ROOT] => /home/ao9fd8p3td27/domains/phpbasics.brettmcsherry.com/html
    [SERVER_ADMIN] => webmaster@phpbasics.brettmcsherry.com
    [SCRIPT_FILENAME] => /home/ao9fd8p3td27/domains/phpbasics.brettmcsherry.com/html/arrays.php
    [REMOTE_PORT] => 33800
    [SERVER_PROTOCOL] => HTTP/2.0
    [REQUEST_METHOD] => GET
    [QUERY_STRING] => 
    [REQUEST_URI] => /arrays.php
    [SCRIPT_NAME] => /arrays.php
    [PHP_SELF] => /arrays.php
    [REQUEST_TIME_FLOAT] => 1766917011.8742
    [REQUEST_TIME] => 1766917011
)