Explore
For Enterprise
Join for Free
Log In

芸術と人文
ビジネス
コンピューターサイエンス
データサイエンス
情報技術
健康
数学と論理
自己啓発
物理科学とエンジニアリング
社会科学
言語学習
学位
修了証

Coursera（コーセラ）内をすべて検索

閲覧
検索
企業用
ログイン
参加は無料

PHP - Basics

Loading...

Building Web Applications in PHP

ミシガン大学（University of Michigan）

4.8 (1,086 件の評価) | 27K在籍する学生

Web Applications for Everybody 専門講座における 4 の 1 コース

In this course, you'll explore the basic structure of a web application, and how a web browser interacts with a web server. You'll be introduced to the request/response cycle, including GET/POST/Redirect. You'll also gain an introductory understanding of Hypertext Markup Language (HTML), as well as the basic syntax and data structures of the PHP language, variables, logic, iteration, arrays, error handling, and superglobal variables, among other elements. An introduction to Cascading Style Sheets (CSS) will allow you to style markup for webpages. Lastly, you'll gain the skills and knowledge to install and use an integrated PHP/MySQL environment like XAMPP or MAMP.

シラバスを表示

学習するスキル

Hypertext Preprocessor (PHP), Html, Cascading Style Sheets (CCS)

レビュー

4.8 (1,086 件の評価)

5 stars
916 ratings
4 stars
146 ratings
3 stars
16 ratings
2 stars
5 ratings
1 star
3 ratings

JN

May 25, 2018

Great and exciting class with a dedicated instructor who has clear and detailed course material. He was able to keep the class interesting and involving with a fantastic attitude.

HH

Dec 01, 2017

The class was particularly challenging when it came to the CSS portion. I understand it better now. It would not hurt to study a little bit on HTML and CSS even before the class.

レッスンから

Introduction to PHP

We begin learning PHP.

Introduction to PHP5:22

PHP - Basics4:08

PHP - Keywords8:57

PHP - Expressions19:08

PHP - Control Structures11:09

講師

Charles Severance
Professor

字幕

So on we go about the PHP language.

Like I said, it comes from the C language.

You see curly braces.

We're also going to learn JavaScript and that has curly braces.

No significant whitespace.

Again, that's all from C.

There's some things where PHP is inspired by Perl.

Dollar signs for variables,

which is one of the things that people find annoying about it.

And associative arrays, which people love.

And the idea is is that PHP is a language.

Although you can use it for things other than HTML,

it really is intended to be an HTML templating language.

And it really exists to serve web applications.

And that's one of the reasons that I really like it.

One of the things about PHP is it's a productivity tool.

It's not a tool that's really designed as a teacher.

So if you take a Python class, Python blows up all the time.

PHP doesn't blow up.

It figures if you typed it, you probably meant for it to happen.

So PHP is trying as hard as it can to

just interpret what you're saying and just do what you want.

And the idea is you're supposed to be able to write code fast,

you know what you want to do, sometimes errors are silent.

So you're supposed to be a responsible programmer.

And so you may find this responsibility on your part as like, oh wow,

why don't you stop me from making mistakes?

But that's not necessarily the philosophy of PHP.

So as I said, PHP is like an extension of HTML.

So we create files that end in .php.

And in that they start the first line is html.

And so this is just html.

And at some point you switch into php with this special kind of tag.

And it turns out there are a couple of things.

This <? is something that was built into HTML for

various programming languages, kind of like escape to the server side.

So the browser is interpreting this, and then the server's running this code

as it's producing the response cycle, request response cycle.

And so you switch, and now you're in the PHP language.

This code emits output.

The output to this code, like an echo statement, which is a print statement,

that actually becomes part of the page.

And then it runs code.

We're going to answer 6 times 7.

You'll notice semicolons to end statements.

Another echo statement.

Some more output.

Some more output.

So what happens is what the browser sees is not this code at all, but

instead the output that's produced by that code.

And now the ?> than finishes that.

And now we're back into HTML.

And so if we run this we're going to see this HTML,

the results of this PHP execution, not the code itself, and then that that HTML.

And so that's what it looks like, okay?

And so here it is.

The answer's 42.

We can't really tell the difference between just looking at the HTML.

This came from the static HTML part, this came from,

the paragraph tag came from the template.

And all this text came from this code running.

And then another paragraph came from that.

So you switch back and forth.

And just because I showed only one, you can have a long file,

you can switch in and out of HTML and PHP as much as you like.

Sometimes we'll switch in and out of HTML and PHP in a single line.

We'll just kind of like right here, in between Dr.

Chuck, we will do less than question mark PHP.

Some stuff.

Question mark less than.

And we can do it right in the middle of a line,

it doesn't have to be a whole block of text.

It can be right in the middle of the line.

And then the output of this is stuck into the HTML right at that point.

Just for completeness, PHP is really designed as a web language, and

that's why I like it.

But I've also seen people who only know PHP and

have done things that are command line with PHP.

You can open files.

You can read them.

PHP is good at parsing strings.

But, I would say that Python is probably a better use of command line if you're

going to write command line application.

I saw somebody over their shoulder, I'm like really, you know that?

So, I didn't realize it, but you can.

But I don't recommend it.

So up next, we're going to talk about the basic syntax of PHP.

コース一覧で検討

サインアップは無料です。今すぐサインアップして、パーソナライズされたお勧め、更新、サービスを利用しましょう。

コーセラは、世界トップクラスの教育を世界中に配信しています。最高峰の大学や組織とのパートナーシップに基づくオンラインコースが提供されています。

© 2019 Coursera (株)すべての権利予約します。

App Storeからダウンロード

Google Playで取得

Coursera
このコースについて
リーダーシップ
キャリア
カタログ
修了証
MasterTrack™の修了証
学位
企業用
政府向け

コミュニティ
Learners
Partners
Developers
Beta Testers
Translators

つながる
ブログ
Facebook
LinkedIn
Twitter
Instagram
Youtube
技術ブログ

さらに表示
規約
プライバシー
ヘルプ
アクセシビリティ
報道関係者
お問い合わせ
ディレクトリ
アフィリエイト