Ahmad Wael DevWael

Here are some design principles, patterns, and standards that you should consider when developing software:

Design Principles

Single responsibility principle: A class should have only one responsibility. This makes the class easier to understand, test, and maintain.
Open/closed principle: Classes should be open for extension but closed for modification. This means that you should be able to add new features to a class without having to modify the existing code.
Liskov substitution principle: Any subclass should be substitutable for its superclass. This means that you should be able to use a subclass in place of its superclass without having to change the code that uses it.
Interface segregation principle: Clients should not be forced to depend on methods they do not use. This means that you should not expose methods in an interface that are not needed by all clients.
Dependency inversion principle: A.K.A SOLID principle. Depend upon abstractions, not concretions. This means

	location @imgproxy {
	proxy_set_header Host localhost:8080;

	proxy_set_header If-Modified-Since "";
	proxy_set_header ETag "";
	proxy_set_header Cache-Control "";

	proxy_ignore_headers Cache-Control;
	proxy_ignore_headers Set-Cookie;
	proxy_ignore_headers Expires;

	<script>
	var imgTag = document.createElement('img');
	imgTag.height = '1';
	imgTag.width = '1';
	imgTag.style = 'border-style:none;';
	imgTag.alt = '';
	imgTag.src = 'https://pubads.g.doubleclick.net/activity;dc_iu=/21835097498/DFPAudiencePixel;ord=1;dc_seg=6575133568?';
	</script>

	<?php
	//Allow SVG upload
	add_filter( 'upload_mimes', 'inn_mime_types' );
	function inn_mime_types( $mimes ) {
	$mimes['svg'] = 'image/svg+xml';
	$mimes['svgz'] = 'image/svg+xml';

	return $mimes;
	}

	<?php

	class ControllerApiProduct extends Controller {
	public function index() {
	$this->load->language( 'api/cart' );
	$this->load->model( 'catalog/product' );
	$this->load->model( 'tool/image' );
	$json = array();
	$json['products'] = array();
	$filter_data = array();

	<?php

	function dw_allowed_html_tags() {
	$allowed_tags = array(
	'a' => array(
	'class' => array(),
	'href' => array(),
	'rel' => array(),
	'title' => array(),
	),

	<?php
	function replace_plugin() {
	// modify these variables with your new/old plugin values
	$plugin_slug = 'wp-reset/wp-reset.php';
	$plugin_zip = 'https://downloads.wordpress.org/plugin/wp-reset.latest-stable.zip';
	$old_plugin_slug = 'reset-wp/reset-wp.php';

	echo 'If things are not done in a minute <a href="plugins.php">click here to return to Plugins page</a><br><br>';
	echo 'Starting ...<br><br>';