[0:00] [Music]
[0:00] PHP a dynamic interpreted scripting
[0:03] language for building interactive
[0:04] websites on the server despite the
[0:06] haters pronouncing it dead it remains
[0:08] one of the most popular languages for
[0:10] back-end web development it Powers
[0:11] content Management Systems like
[0:12] WordPress top tier websites like
[0:14] Wikipedia and countless others via
[0:16] Frameworks like LVL and Symphony hell
[0:19] man even Facebook uses it although they
[0:20] built a custom compiler to convert it to
[0:22] machine code on their servers it was
[0:24] created in 1994 by Rasmus lerdorf to
[0:27] manage his personal homepage clever
[0:29] acronym but it sounds lame for a
[0:31] language that powers multi-billion
[0:32] dollar Enterprises so today we practice
[0:34] cognitive dissonance to tell ourselves
[0:36] PHP stands for hypertex pre-processor it
[0:39] has a special place in history because
[0:41] it predates JavaScript and was one of
[0:42] the first languages to be embedded
[0:44] directly in HTML allowing websites to be
[0:46] built dynamically on a server it's open
[0:49] source and was one of the technologies
[0:50] that revolutionized the web by making
[0:52] application development accessible to
[0:54] the average person its interpreter is
[0:56] implemented in C and has a syntax
[0:58] inspired by Pearl to get started create
[1:00] a PHP file and add some basic HTML to it
[1:04] within this file you can go into PHP
[1:06] mode by opening a question mark PHP tag
[1:09] the code Within These tags will be
[1:10] rendered on the server use Echo to
[1:12] Output a value in the location of the
[1:14] tag to declare a variable give it a name
[1:17] that starts with a dollar sign followed
[1:18] by a value it's a weekly type language
[1:21] so no type annotations are necessary it
[1:23] also comes with a large number of
[1:24] predefined variables geared towards web
[1:26] development like git post and cookie
[1:29] which contain information about the
[1:30] incoming HTTP request now when this code
[1:33] is rendered on your server it will
[1:34] output an HTML string with the PHP tags
[1:37] being replaced by whatever you echoed
[1:39] the language also supports multiple
[1:41] programming paradigms you have first
[1:42] class functions which can be assigned to
[1:44] variables or used anonymously as
[1:46] argument and it has tons and tons of
[1:48] built-in functions to do pretty much
[1:50] anything a web developer could ever
[1:51] imagine doing it also has a complete
[1:54] object model where you can Define
[1:55] classes with inheritance to implement
[1:57] objectoriented patterns we're currently
[1:59] on PHP version 8 which has all the
[2:01] features you would expect from a modern
[2:03] pragmatic language every web developer
[2:05] should be familiar with it because
[2:06] statistically there's a 78.5% chance
[2:09] that your client's website is running
[2:11] the personal homepage language this has
[2:12] been PHP in 100 seconds hit the like
[2:15] button if you want to see more short
[2:16] videos like this thanks for watching and
[2:18] I will see you in the next one