PHP Full PDF Beginner to Advance | Notes

Introduction To PHP Concept Step By Step PDF.Top Researched Based PHP interview Questions . how to Implement. This PHP tutorial Will Help you to learn PHP from Beginner To Advance.

PHP

PHP (recursive acronym for “PHP: Hypertext Preprocessor”)

widely-used Open Source general-purpose scripting language
especially suited for Web development
can be embedded into HTML.

Example

<html>

<head>

<title>Example</title>

</head>

<body>

<?php echo “Hi, I’m a PHP script!”; ?>

</body>

</html>

Environment Needed

Assume that your server has support for PHP activated and that all files ending in .php are handled by PHP

Create your .php files and put them in your web directory and the server will magically parse them for you
No need to compile anything
Develop locally
install a web server, such as Apache
install PHP
install a database as well, such as PostgreSQL.

<?php

$var = “Bob”;

$Var = “Joe”;

echo “$var, $Var”; // outputs “Bob, Joe”

$x = 1;

$x = ‘abc’; // type can change if value changes

$4site = ‘not yet’; // invalid; starts with a number $_4site = ‘not yet’; // valid; starts with an underscore