PHP & MySQL

Here is a short video that shows how to link MySQL and PHP:

Source:https://www.youtube.com/watch?v=mpQts3ezPVg

JavaScript Comments

JavaScript comments can be used to explain JavaScript code, and to make it more readable.

JavaScript comments can also be used to prevent execution, when testing alternative code.

---

Single Line Comments

Single line comments start with //.

Any text between // and the end of the line, will be ignored by JavaScript (will not be executed).

This example uses a single line comment before each line, to explain the code:

Example

// Change heading:document.getElementById("myH").innerHTML = "My First Page";
// Change paragraph:document.getElementById("myP").innerHTML = "My first paragraph.";

This example uses a single line comment at the end of each line, to explain the code:

Example

var x = 5;      // Declare x, give it the value of 5var y = x + 2;  // Declare y, give it the value of x + 2

---

Multi-line Comments

Multi-line comments start with /* and end with */.

Any text between /* and */ will be ignored by JavaScript.

This example uses a multi-line comment (a comment block) to explain the code:

Example

/*
The code below will change
the heading with id = "myH"
and the paragraph with id = "myP"
in my web page:
*/
document.getElementById("myH").innerHTML = "My First Page";
document.getElementById("myP").innerHTML = "My first paragraph.";

Source: http://www.w3schools.com/js/js_comments.asp

PHP in Action

PHP is a programming language that can do all sorts of things: evaluate form data sent from a browser, build custom web content to serve the browser, talk to a database, and even send and receive cookies (little packets of data that your browser uses to remember things, like if you're logged in to Codecademy).

Check out the code in the editor. Looks familiar, doesn't it? That's because a lot of it is regular old HTML! The PHP code is written in the <?phpand ?> . See how it generates numbers, creates lists, and adds text directly to your webpage?

Go to source: https://www.codecademy.com/ja/courses/web-beginner-en-StaFQ/0/1?curriculum_id=5124ef4c78d510dd89003eb8

This is a link to a great introduction tutorial for NetBeans. 0https://www.youtube.com/watch?v=2FOp_RVrAq0

The IDE I recommend is NetBeans.