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PHP Full PDF Beginner to Advance | Notes

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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

?>

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