php
Post on 10-May-2015
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PHP
What is HTML?
HyperText Markup Language (HTML) is the main markup language for web pages
Why HTML?
What is CSS?
Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation semantics (the look and formatting) of HTML
h1 { color: white; background-color: orange; } h2 { color: white; background-color: green; }
Why CSS?
Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation semantics (the look and formatting) of HTML
h1 { color: white; background-color: orange; } h2 { color: white; background-color: green; }
What is Javascript?
JavaScript is a scripting language
function sum() {
var i, x = 0; for (i = 0; i < arguments.length; ++i) { x += arguments[i]; } return x; }
Why Javascript?
HTML provides only one way communication
Hey, are you
there?
Why the hell don’t you talk to
me?
HTML is static and boring.
With pure HTML web pages, the server simply serves up static HTML that can only display content.
Okay, PHP brings web pages to life
With a little help from the server
#webpage
#static_page
#dynamic_page
#form
PHP Syntax <html> <body> <?php echo "Hello World"; ?> </body> </html>
String <?php $txt="Hello World"; echo $txt; ?> Concatenation Operator <?php $txt1="Hello World!"; $txt2="What a nice day!"; echo $txt1 . " " . $txt2; ?>
strlen() strlen("Hello world!")
strpos strpos("Hello world!","world");
Function function functionName() { echo(“Hello world”); }
Use PHP to access form data
PHP scripts must live on a server
A variable is a container that you can store data in.
Arithmetic Operators
Assignment Operators
Comparison Operators
Logical Operators
If … else
Array Numeric Arrays $cars=array("Saab","Volvo","BMW","Toyota");
Associative Arrays $ages = array("Peter"=>32, "Quagmire"=>30, "Joe"=>34);
For loops for ($i=1; $i<=5; $i++) { echo "The number is " . $i . "<br />"; }
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