PHP in 100 Seconds

[00:00] [Music]

[00:00] PHP a dynamic interpreted scripting

[00:03] language for building interactive

[00:04] websites on the server despite the

[00:06] haters pronouncing it dead it remains

[00:08] one of the most popular languages for

[00:10] back-end web development it Powers

[00:11] content Management Systems like

[00:12] WordPress top tier websites like

[00:14] Wikipedia and countless others via

[00:16] Frameworks like LVL and Symphony hell

[00:19] man even Facebook uses it although they

[00:20] built a custom compiler to convert it to

[00:22] machine code on their servers it was

[00:24] created in 1994 by Rasmus lerdorf to

[00:27] manage his personal homepage clever

[00:29] acronym but it sounds lame for a

[00:31] language that powers multi-billion

[00:32] dollar Enterprises so today we practice

[00:34] cognitive dissonance to tell ourselves

[00:36] PHP stands for hypertex pre-processor it

[00:39] has a special place in history because

[00:41] it predates JavaScript and was one of

[00:42] the first languages to be embedded

[00:44] directly in HTML allowing websites to be

[00:46] built dynamically on a server it's open

[00:49] source and was one of the technologies

[00:50] that revolutionized the web by making

[00:52] application development accessible to

[00:54] the average person its interpreter is

[00:56] implemented in C and has a syntax

[00:58] inspired by Pearl to get started create

[01:00] a PHP file and add some basic HTML to it

[01:04] within this file you can go into PHP

[01:06] mode by opening a question mark PHP tag

[01:09] the code Within These tags will be

[01:10] rendered on the server use Echo to

[01:12] Output a value in the location of the

[01:14] tag to declare a variable give it a name

[01:17] that starts with a dollar sign followed

[01:18] by a value it's a weekly type language

[01:21] so no type annotations are necessary it

[01:23] also comes with a large number of

[01:24] predefined variables geared towards web

[01:26] development like git post and cookie

[01:29] which contain information about the

[01:30] incoming HTTP request now when this code

[01:33] is rendered on your server it will

[01:34] output an HTML string with the PHP tags

[01:37] being replaced by whatever you echoed

[01:39] the language also supports multiple

[01:41] programming paradigms you have first

[01:42] class functions which can be assigned to

[01:44] variables or used anonymously as

[01:46] argument and it has tons and tons of

[01:48] built-in functions to do pretty much

[01:50] anything a web developer could ever

[01:51] imagine doing it also has a complete

[01:54] object model where you can Define

[01:55] classes with inheritance to implement

[01:57] objectoriented patterns we're currently

[01:59] on PHP version 8 which has all the

[02:01] features you would expect from a modern

[02:03] pragmatic language every web developer

[02:05] should be familiar with it because

[02:06] statistically there's a 78.5% chance

[02:09] that your client's website is running

[02:11] the personal homepage language this has

[02:12] been PHP in 100 seconds hit the like

[02:15] button if you want to see more short

[02:16] videos like this thanks for watching and

[02:18] I will see you in the next one