Php

HyperText Markup Language (HTML) is the main
markup language for web pages

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; }

JavaScript is a scripting language

function sum() {
var i, x = 0;
for (i = 0; i < arguments.length; ++i) {
x += arguments[i];
}
return x;
}

HTML provides only one way communication
Why the
hell don’t
you talk to
me?

Hey, are
you
there?

With pure HTML web pages, the server simply
serves up static HTML that can only display
content.

With a little help from
the server

Okay, PHP brings web pages to life

#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”);
}

PHP scripts must live on a server

A variable is a container that you can store data in.

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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