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Frontend Development for Web Pages

PHP is server side back end scripting language.
PHP is an acronym for “PHP: Hypertext Preprocessor”
PHP is a widely-used, open source scripting language
PHP scripts are executed on the server

Bootstrap

Bootstrap is a robust and comprehensive UI library for developing responsive and mobile-first websites and apps. Here are some advantages of using Bootstrap as the styling framework for a WordPress theme.

hundreds of JavaScript/jQuery plugins already integrated with Bootstrap.

Envato

You can buy, prepared themes over ENVATO, build your website with CHEAP and good themes. You can pay just 50 $ to get very good theme and support.

Server Installation and Development Enviroment

Install PHP to Centos 7.9 With All Extensions (Apache, Ngins, Psql,Mysql, Redis, Memcache, unit Test )
- Professional Development Server Installation

Database driven sites

You can use libraries those are already written for PHP to manage MYSQL and other databases. But you can also use native php functions to access database. You can search at “composer“.

Mysql

// Create connection
$conn = mysqli_connect($servername, $username, $password);

1 2	// Create connection $conn = mysqli_connect($servername, $username, $password);

MySQL is the most popular database system used with PHP. Mysql is tunable easily by developers. Performance is well enough for simple php sites.

For the projects, you can easily get backup of the mysql with php. It is very easy to get data from mysql. Very clean to code it.

/// 
$sql = "SELECT id FROM kz_table";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  // output data of each row
  while($row = $result->fetch_assoc()) {
                   echo "id: " . $row["id"]. "<br>";
               }
              } else {
           echo "0 results";
         }
        $conn->close();  // Do not forget to close !  tooo many open connection errors occurs.
        ///

///

$sql = "SELECT id FROM kz_table";

$result = $conn->query($sql);

if ($result->num_rows > 0) {

// output data of each row

while($row = $result->fetch_assoc()) {

echo "id: " . $row["id"]. "<br>";

}

} else {

echo "0 results";

}

$conn->close(); // Do not forget to close ! tooo many open connection errors occurs.

///

Mysql ist fast. Easy to manage, but you can have inno db problems sometimes. DB crashes occurs. PhpMyadmin and SQL Dumpers are favorite Backup and management tools.

Postgresql

Postgresql is an alternative to MYSQL, if you want more and more stability and some better advantages that you need and not available at MYSQL side.

<?php
// Connecting, selecting database
    $dbconn = pg_connect("host=kz_SERVER dbname=kz_db user=www password=foo")
    or die('Could not connect: ' . pg_last_error());

// Performing SQL query
$query = 'SELECT * FROM kztable';
$result = pg_query($query) or die('Query failed: ' . pg_last_error());

// Printing results in HTML
echo "<table>\n";
while ($line = pg_fetch_array($result, null, PGSQL_ASSOC)) {
    echo "\t<tr>\n";
    foreach ($line as $col_value) {
        echo "\t\t<td>$col_value</td>\n";
    }
    echo "\t</tr>\n";
}
echo "</table>\n";

// Free resultset
pg_free_result($result);
//

<?php

// Connecting, selecting database

$dbconn = pg_connect("host=kz_SERVER dbname=kz_db user=www password=foo")

or die('Could not connect: ' . pg_last_error());

// Performing SQL query

$query = 'SELECT * FROM kztable';

$result = pg_query($query) or die('Query failed: ' . pg_last_error());

// Printing results in HTML

echo "<table>\n";

while ($line = pg_fetch_array($result, null, PGSQL_ASSOC)) {

echo "\t<tr>\n";

foreach ($line as $col_value) {

echo "\t\t<td>$col_value</td>\n";

}

echo "\t</tr>\n";

}

echo "</table>\n";

// Free resultset

pg_free_result($result);

Mysql is faster BUT Postgresql handles the Concurrency better, and heavy inserts more stable processed.

Php and Type Conversion (Sql, Data, Json, Binary, Hex ..)

Cassandra

Cassandra is Nosql DATABASE. It is distributed and you can set the data replication factors and multi datacenter avalibilities.

You can download the drive here. https://github.com/datastax/php-driver

Service Based PHP

Services are very important to create activities with 3rd parties. Your scripts can access the data from 3rd parties or can send data to them. For stability , realibility, and avalibility services are also used. You can create back-end servers to create services and your php front-end can access these servers to access data requests and responses. If you have billions of requests you can do load balancing.

Owner of the picture is ORACLE. I copied from ORACLE

OAUTH – and V2

Oauth very important to access user data from 3rd parties. Such as If a user trying to register a web page over FACEBOOK, OAUTH can transfer the user data to the web page that user trying to register. Tokens or other mechanism used for validation exchanges.

Here are the some important methods of the OAUTH

//
public disableRedirects ( void ) : bool
public disableSSLChecks ( void ) : bool
public enableDebug ( void ) : bool
public enableRedirects ( void ) : bool
public enableSSLChecks ( void ) : bool
public fetch ( string $protected_resource_url [, array $extra_parameters [, string $http_method [, array $http_headers ]]] ) : mixed
public generateSignature ( string $http_method , string $url [, mixed $extra_parameters ] ) : string
public getAccessToken ( string $access_token_url [, string $auth_session_handle [, string $verifier_token [, string $http_method ]]] ) : array
public getCAPath ( void ) : array
public getLastResponse ( void ) : string
public getLastResponseHeaders ( void ) : string
public getLastResponseInfo ( void ) : array
public getRequestHeader ( string $http_method , string $url [, mixed $extra_parameters ] ) : string
public getRequestToken ( string $request_token_url [, string $callback_url [, string $http_method ]] ) : array
public setAuthType ( int $auth_type ) : bool
public setCAPath ([ string $ca_path [, string $ca_info ]] ) : mixed
public setNonce ( string $nonce ) : mixed
public setRequestEngine ( int $reqengine ) : void
public setRSACertificate ( string $cert ) : mixed
public setSSLChecks ( int $sslcheck ) : bool
public setTimestamp ( string $timestamp ) : mixed
public setToken ( string $token , string $token_secret ) : bool
public setVersion ( string $version ) : bool
//

public disableRedirects ( void ) : bool

public disableSSLChecks ( void ) : bool

public enableDebug ( void ) : bool

public enableRedirects ( void ) : bool

public enableSSLChecks ( void ) : bool

public fetch ( string $protected_resource_url [, array $extra_parameters [, string $http_method [, array $http_headers ]]] ) : mixed

public generateSignature ( string $http_method , string $url [, mixed $extra_parameters ] ) : string

public getAccessToken ( string $access_token_url [, string $auth_session_handle [, string $verifier_token [, string $http_method ]]] ) : array

public getCAPath ( void ) : array

public getLastResponse ( void ) : string

public getLastResponseHeaders ( void ) : string

public getLastResponseInfo ( void ) : array

public getRequestHeader ( string $http_method , string $url [, mixed $extra_parameters ] ) : string

public getRequestToken ( string $request_token_url [, string $callback_url [, string $http_method ]] ) : array

public setAuthType ( int $auth_type ) : bool

public setCAPath ([ string $ca_path [, string $ca_info ]] ) : mixed

public setNonce ( string $nonce ) : mixed

public setRequestEngine ( int $reqengine ) : void

public setRSACertificate ( string $cert ) : mixed

public setSSLChecks ( int $sslcheck ) : bool

public setTimestamp ( string $timestamp ) : mixed

public setToken ( string $token , string $token_secret ) : bool

public setVersion ( string $version ) : bool

As you see above, it is saying, Disable redirects or get Last response, Auth type, Request tokens. Imagine that; You have 100 users trying to do outh in the same time. A lot of time saving for clients!.

REST (REST or Representational State Transfer )

The objective is to build a RESTful web service in PHP to provide resource data based on the request with the network call by the external clients.

Create request URI with patterns that follow REST principles.
Make the RESTful service to be capable of responding to the requests in JSON, XML, HTML formats.
Demonstrate the use of HTTP Status code based on different scenarios.
Demonstrate the use of Request Headers.
Test the RESTful web service using a REST client.

	RESTful-Style	RPC-Style
Request URI	The request URI will differ based on the resource.	Same URI for all resources.
Request methods	The service request parameters can be sent via GET, PUT, POST request methods.	Supports only the POST method.
Service methods or handlers	Same method for all resources.	Methods and params are posted on request.
Target on	The service request using this style targets resources.	The target is methods.
Response data transmission	Over HTTP	wrapped with the requested methods and params.

License of the Picture: nordicapis.com

License of the Picture : kennethlange

An alternative to REST, FACEBOOKS graphQL.

License : https://www.linkedin.com/pulse/daha-olgunla%C5%9Facakt%C4%B1k-richardson-muhammed-cuma-tahiroglu

RPC is mostly related with actions.

SOAP

SOAP is an acronym for Simple Object Access Protocol. It is an XML-based messaging protocol for exchanging information among computers. SOAP is an application of the XML specification.

SOAP is easy to handle for security. Security at Rest little bit complex if you would like to do it.
SOAP using RPC(Remote Process Call) method. SOAP contains WS-* like security protocols, SOAP memorize the state information at requests and responses.
REST can work with JSON, XML and TEXT, SOAP should use XML. REST is more usefull in this case.
Data sizes are more smaller at REST, Traffic is lower, in this case REST is better.
For the performance, you should choose the REST.
REST using HTTP methods. GET,POST,PUT,DELETE etc.
REST is more easy to integrate

POST /PHP_Kutayzorlu_com HTTP/1.1
Host: www.example.org
Content-Type: application/soap+xml; charset=utf-8
Content-Length: 299
SOAPAction: "http://www.w3.org/2003/05/soap-envelope"

<?xml version="1.0"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:m="http://www.example.org">
  <soap:Header>
  </soap:Header>
  <soap:Body>
    <m:GetStockPrice>
      <m:StockName>T</m:StockName>
    </m:GetStockPrice>
  </soap:Body>
</soap:Envelope>

POST /PHP_Kutayzorlu_com HTTP/1.1

Host: www.example.org

Content-Type: application/soap+xml; charset=utf-8

Content-Length: 299

SOAPAction: "http://www.w3.org/2003/05/soap-envelope"

<?xml version="1.0"?>

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:m="http://www.example.org">

<soap:Header>

</soap:Header>

<soap:Body>

<m:GetStockPrice>

<m:StockName>T</m:StockName>

</m:GetStockPrice>

</soap:Body>

</soap:Envelope>

Php Package management

composer Example loading php libraries. (require ‘vendor/autoload.php’;)

<?php
require 'vendor/autoload.php';
use Dotenv\Dotenv;

use Src\System\DatabaseConnector;

$dotenv = new DotEnv(__DIR__);
$dotenv->load();

$dbConnection = (new DatabaseConnector())->getConnection();

<?php

require 'vendor/autoload.php';

use Dotenv\Dotenv;

use Src\System\DatabaseConnector;

$dotenv = new DotEnv(__DIR__);

$dotenv->load();

$dbConnection = (new DatabaseConnector())->getConnection();

Session

Session Abort # session_abort(): bool
    session_abort() # veriyi kaydetmeden oturumu bitirir. Böylece oturum verisindeki ozgün değerler korunur. 
    //  Başarı durumunda true, başarısızlık durumunda false döner. 
   <?php
      session_start();
      $_SESSION['country']="Australia";
      echo session_encode();
      session_abort();
      session_start();
      echo "<br>".session_encode();
    ?>
       when session_abort is executed , the session is closed and the change which here is the 'country' element of Session array is discarded . 
       Output : 
       city|s:6:"Sydney";country|s:9:"Australia";
       city|s:6:"Sydney"; 



Session Status :  session_status();

    PHP_SESSION_DISABLED, wenn Sessions deaktiviert sind.
    PHP_SESSION_NONE, wenn Sessions aktiviert sind, aber keine existiert.
    PHP_SESSION_ACTIVE, wenn Sessions aktiviert sind und eine existiert.


session_start()
    # Without start you can not access the, $_SESSION object. it will return null. Session reads itself from file.

session_unset — Free all session variables
  
session_write_close — Oturum verisini yazıp oturumu kapatır

Ref: https://www.php.net/manual/tr/book.session.php

Session Abort # session_abort(): bool

session_abort() # veriyi kaydetmeden oturumu bitirir. Böylece oturum verisindeki ozgün değerler korunur.

// Başarı durumunda true, başarısızlık durumunda false döner.

<?php

session_start();

$_SESSION['country']="Australia";

echo session_encode();

session_abort();

session_start();

echo "<br>".session_encode();

when session_abort is executed , the session is closed and the change which here is the 'country' element of Session array is discarded .

Output :

city|s:6:"Sydney";country|s:9:"Australia";

city|s:6:"Sydney";

Session Status : session_status();

PHP_SESSION_DISABLED, wenn Sessions deaktiviert sind.

PHP_SESSION_NONE, wenn Sessions aktiviert sind, aber keine existiert.

PHP_SESSION_ACTIVE, wenn Sessions aktiviert sind und eine existiert.

session_start()

# Without start you can not access the, $_SESSION object. it will return null. Session reads itself from file.

session_unset — Free all session variables

session_write_close — Oturum verisini yazıp oturumu kapatır

Ref: https://www.php.net/manual/tr/book.session.php

Document Management

For generation of the office documents and BI reports.

PHPOffice / PHPWord (Word and Office documents)

You can create office documents with this library. PHPWord is a library written in pure PHP that provides a set of classes to write to and read from different document file formats. The current version of PHPWord supports Microsoft Office Open XML (OOXML or OpenXML), OASIS Open Document Format for Office Applications (OpenDocument or ODF), Rich Text Format (RTF), HTML, and PDF.

For the Excel https://github.com/PHPOffice/PHPExcel

PDF Generation for Customers / FPDF

There are also other alternative PDF libraries are available, But here is most easiest one.

<?php
require('fpdf.php');

$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>

<?php

require('fpdf.php');

$pdf = new FPDF();

$pdf->AddPage();

$pdf->SetFont('Arial','B',16);

$pdf->Cell(40,10,'Hello World!');

$pdf->Output();

XML – XSLT – XSD validations

For the some of the backend services you need to validate the XML.

 public DOMDocument::schemaValidate 
     ( string $filename [, int $flags = 0 ] ) : bool

1 2	public DOMDocument::schemaValidate ( string $filename [, int $flags = 0 ] ) : bool

Frameworks

Every developer can write own Framework. I have my own framework for E-Commerce / Crm systems

kcrm

Kcrm is private framework developed by Kutay ZORLU to FAST build CRM front-end applications. Advantages

Built in REST services for Customer DATA
Automatic Back-End failure detection and finding next Backend for Transactions
Streaming Libraries impletemented, Data download, Data Stream, Data Upload
Perfect design for CRM / ERP System coding.
Invocing API implemented
Usufull with multiple Data resources
- You can use, Mysql, REdis, Postgresql, Cassandra, and REST in the same time !
FAST. Not loading toooo many libraries. Its using only what it needs.
Caching library implemented.
…. more and more.

Smarty

Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. This implies that PHP code is application logic, and is separated from the presentation.

Here is the sample Description : https://www.smarty.net/sampleapp1

PHP

<?php $counter=0; ?>
<?php foreach($foo as $bar): ?>
  <?php if(($counter+1) % 4 == 0): ?>
    </tr><tr>
  <?php endif; ?>
  <td><?php echo $bar; ?></td>
  <?php $counter++; ?>
<?php endforeach; ?>

Smarty

{foreach $foo as $bar}
  {if $bar@iteration is div by 4}
    </tr><tr>
  {/if}
  <td>{$bar}</td>
{/foreach}

PHP

<?php $counter=0; ?>

<?php foreach($foo as $bar): ?>

<?php if(($counter+1) % 4 == 0): ?>

</tr><tr>

<?php endif; ?>

<?php $counter++; ?>

<?php endforeach; ?>

Smarty

{foreach $foo as $bar}

{if $bar@iteration is div by 4}

</tr><tr>

{/if}

{/foreach}

header.tpl

<html>
<head>
<title>{$title|default:"no title"}</title>
</head>
<body>

	  	
footer.tpl

</body>
</html>

index.tpl

{include file="header.tpl" title="Info"}

User Information:<p>

Name: {$name|capitalize}<br>
Address: {$address|escape}<br>

{include file="footer.tpl"}

	  	
output

<html>
<head>
<title>Info</title>
</head>
<body>

User Information:<p>

Name: George Smith<br>
Address: 45th &amp; Harris<br>

</body>
</html>

header.tpl

<html>

<head>

<title>{$title|default:"no title"}</title>

</head>

<body>

footer.tpl

</body>

</html>

index.tpl

{include file="header.tpl" title="Info"}

User Information:<p>

Name: {$name|capitalize}<br>

Address: {$address|escape}<br>

{include file="footer.tpl"}

output

<html>

<head>

</head>

<body>

User Information:<p>

Name: George Smith<br>

Address: 45th & Harris<br>

</body>

</html>

Laravel

composer global require "laravel/installer=~1.1"

1	composer global require "laravel/installer=~1.1"

Typically, you may use a web server such as Apache or Nginx to serve your Laravel applications. 

php artisan serve

php artisan serve --port=8080

Typically, you may use a web server such as Apache or Nginx to serve your Laravel applications.

php artisan serve

php artisan serve --port=8080

To get started, let's create our first route. 
In Laravel, the simplest route is a route to a Closure. 
Pop open the app/routes.php file and add the following route to 
the bottom of the file:

Route::get('users', function()
{
    return 'Users!';
});

To get started, let's create our first route.

In Laravel, the simplest route is a route to a Closure.

Pop open the app/routes.php file and add the following route to

the bottom of the file:

Route::get('users', function()

{

return 'Users!';

});

Example Mongo DB usage with Laravel composer require jenssegers/mongodb

Laravel Side Config/database.php

'mongodb' => [
    'driver' => 'mongodb',
    'host' => env('DB_HOST', '127.0.0.1'),
    'port' => env('DB_PORT', 27017),
    'database' => env('DB_DATABASE', 'homestead'),
    'username' => env('DB_USERNAME', 'homestead'),
    'password' => env('DB_PASSWORD', 'secret'),
    'options' => [
        // here you can pass more settings to the Mongo Driver Manager
        // see https://www.php.net/manual/en/mongodb-driver-manager.construct.php under "Uri Options" for a list of complete parameters that you can use

        'database' => env('DB_AUTHENTICATION_DATABASE', 'admin'), // required with Mongo 3+
    ],
],

'mongodb' => [

'driver' => 'mongodb',

'host' => env('DB_HOST', '127.0.0.1'),

'port' => env('DB_PORT', 27017),

'database' => env('DB_DATABASE', 'homestead'),

'username' => env('DB_USERNAME', 'homestead'),

'password' => env('DB_PASSWORD', 'secret'),

'options' => [

// here you can pass more settings to the Mongo Driver Manager

// see https://www.php.net/manual/en/mongodb-driver-manager.construct.php under "Uri Options" for a list of complete parameters that you can use

'database' => env('DB_AUTHENTICATION_DATABASE', 'admin'), // required with Mongo 3+

Phalcon

Phalcon is an open source full stack framework for PHP, written as a C-extension. Phalcon is optimized for high performance. Its unique architecture allows the framework to always be memory resident, offering its functionality whenever it’s needed, without expensive file stats and file reads that traditional PHP frameworks employ.Phalcon is an open source full stack framework for PHP, written as a C-extension. Phalcon is optimized for high performance. Its unique architecture allows the framework to always be memory resident, offering its functionality whenever it’s needed, without expensive file stats and file reads that traditional PHP frameworks employ. ref 1 ö g g

    Resolving the application’s HTTP requests

Autoloader

We are going to use Phalcon\Loader a PSR-4 compliant file loader. Common things that should be added to the autoloader are your controllers and models. You can also register directories which will be scanned for files required by the application.

To start, lets register our app’s controllers and models directories using Phalcon\Loader:

public/index.php

<?php

use Phalcon\Loader;

define('BASE_PATH', dirname(__DIR__));
define('APP_PATH', BASE_PATH . '/app');
// ...

$loader = new Loader();

$loader->registerDirs(
    [
        APP_PATH . '/controllers/',
        APP_PATH . '/models/',
    ]
);

$loader->register();

Resolving the application’s HTTP requests

Autoloader

We are going to use Phalcon\Loader a PSR-4 compliant file loader. Common things that should be added to the autoloader are your controllers and models. You can also register directories which will be scanned for files required by the application.

To start, lets register our app’s controllers and models directories using Phalcon\Loader:

public/index.php

<?php

use Phalcon\Loader;

define('BASE_PATH', dirname(__DIR__));

define('APP_PATH', BASE_PATH . '/app');

// ...

$loader = new Loader();

$loader->registerDirs(

[

APP_PATH . '/controllers/',

APP_PATH . '/models/',

]

);

$loader->register();

By default Phalcon will look for a controller named IndexController. It is the starting point when no controller or action has been added in the request 
(eg. https://localhost/). An IndexController and its IndexAction should resemble the following example:

app/controllers/IndexController.php

<?php

use Phalcon\Mvc\Controller;

class IndexController extends Controller
{
    public function indexAction()
    {
        return '<h1>KUTAY !!! !</h1>';
    }
}

By default Phalcon will look for a controller named IndexController. It is the starting point when no controller or action has been added in the request

(eg. https://localhost/). An IndexController and its IndexAction should resemble the following example:

app/controllers/IndexController.php

<?php

use Phalcon\Mvc\Controller;

class IndexController extends Controller

{

public function indexAction()

{

return '<h1>KUTAY !!! !</h1>';

}

PHP – C++

C++ Implementation of the PHP. You are writing C++ Codes then compling, after that, you need to call it from PHP. Fastest way.

#include <phpcpp.h>
#include <iostream>

void myFunction()
{
    Php::out << "example output" << std::endl;
}

extern "C" {
    PHPCPP_EXPORT void *get_module() {
        static Php::Extension extension("my_extension", "1.0");
        extension.add<myFunction>("myFunction");
        return extension;
    }
}

#include <phpcpp.h>

#include <iostream>

void myFunction()

{

Php::out << "example output" << std::endl;

}

extern "C" {

PHPCPP_EXPORT void *get_module() {

static Php::Extension extension("my_extension", "1.0");

extension.add<myFunction>("myFunction");

return extension;

}

<?php
    for ($i=0; $i<10; $i++) echo(myFunction()."\n");
?>

<?php

for ($i=0; $i<10; $i++) echo(myFunction()."\n");

http://www.php-cpp.com/documentation/functions
http://www.php-cpp.com/documentation/your-first-extension

E-Commerce Systems

XT-Commerce
JTL WAVI – Web Service Development + XT- Commerce
WordPress
Gambio Installation
Magento
Modified E-Commerce
B2B-E-Commerce

Code Guide Lines (richtlinien)

Object Oriented PHP

OOP is very important if your project becomes bigger and more complex. Clean programming and management of the classes are becoming very hard to handle. Composer is one of the best helper for php developers.

Modal view controller

Most important think for Development. MVC in PHP

Development with Source Code Controlling

KUTAY ZORLU