PHP COMPLETE GUIDE IN ALL LANGUAGES
What you read on this page:
- Introduction to PHP (php)
- PHP history (php)
- Features of PHP language (php)
- Benefits of PHP language (php)
- Web Design with PHP
- PHP and MySQL MySQL
- Designpatternsin PHP
- PHP friedups (php)
- PHP code example (php)
Introduction to PHP (PHP)
PHP (PHP) is a general scripting language that is especially suitable for Web Development . In the beginning PHP was taken from a personal home page phrase (Personal Home page) But now this word stands for Hypertext preprocessor means the pre-text cloud processor.
This programming language is based on C (C) language and is a Cross-platfrom language and is applicable on various operating systems (windows, linux, UNIX, mac, etc.), and it is also capable of installing a separate shell on almost all platforms and platforms. PHP is almost compatible with all of the servers used today (Apache, IIS, etc.) and supports a wide range of databases as well. PHP codes are interpreted by a Web server that is installed on PHP. The syntax of this language can be directly contained within HTML codes (html) .
The ability to optimize the code is also possible in the PHP language, and apps and extensions such as eaccelerator are developed for this purpose. PHP language in new versions has added support for the command line interface to its features. It can be used to create non-web software or GUIsoftware . Testing applications and software developed with PHP are important in different ways. Due to the comprehensive use of php in Web applications, performance testing (Performance testing) is of utmost importance. Also, reviewing and reviewing tools The Code also contributes to the developers that we can fix many bugs at the code level and before testing .
PHP history (php)
PHP Development began in 1994, when Rasmus Lerdorf wrote several common Gateway Interface programs (CGI) in C , which he used to preserve his personal page. He expanded them to work with Web forms and communicate with the database and read this "personal home page/translator forms" or php/fi . php/fi can be used to build simple and dynamic Web applications. It was similar to Perl, but it was simpler, more narrow, and less consistent.
During the year 2014 and 2015, the original version of The new PHP was created that was numbered with the PHP number 7 . Numbering This version includes discussions. Whilethe PHP-6 test was never published in Unicode, they referenced several articles and titles of php-6 , which may cause confusion if re-use of this name. After voting, PHP 7 name was selected.
Features of PHP language (php)
The main features of PHP can be pointed to the following:
- Functionality:the PHP script runs faster than other language scripts such as JSP and ASP . PHP uses its own memory, so the server's workload and load time are automatically reduced, resulting in faster processing and better performance.
- Open source:source code and PHP software are available free on the Web. You can develop all versions of PHP in accordance with your need. All its components are free of charge, including downloading and using.
- The familiar:PHP has a one that is easy to understand. Programmers are comfortable to understand and programming.
- Embedded:کد PHP code can be easily imported in HTML tags and scripts وارد کرد.
- Standalone software Platforms:PHP is available for WINDOWS, MAC, LINUX and UNIX operating Systems . A PHP program created on an operating system can be easily run on other platforms as well.
- Database support:PHP supports all leading databases such as MySQL, SQLite, ODBC , etc.
- Error Reporting: PHP uses error -defined error reporting for predefined notice or thigh time alerts. For example, E_ERROR, E_WARNING, E_STRICT, E_PARSE.
- The rule of language: PHP allows us to use a variable without declaring the data type. In the same time, based on the data type in its value is automatically taken.
- Web servers support:PHP is compatible with all local servers used like Apache, Netscape, Microsoft IIS , etc.
- Security:PHP is a trusted language for website development. This includes several security layers to prevent threats and malicious attacks.
- Control: different programming languages require scripts or long code, while PHP can do the same thing in a few lines of code. This maximum control over websites like you can easily make changes whenever you want.
- Helpful Forum PHP:This forum has a number of developers who regularly update documents, tutorials, online Help and FAQ.
Benefits of PHP language (php)
Class Pdo
PHP Data Object is exclusively used to connect to MySQL databases. PDO provides a good abstraction layer around a set of databases such as MySQL mai (MySQL), mysql postgrass (PostgreSQL) and MySQL server (SQL server) . That means that from any database you use, as long as PDO supports it, you can use the same functions in the database. This advantage makes your code portable so that you can use your web app in all databases without additional development time.
Json_encode and json_decode
With PHP 5.2, there are two very useful functions that allow you toparsethe G-San (JSON) strings. JSON is a text-based standard that is generally designed to send and receive data with a simple structure that is easily readable by the computer and by humans.
DateTime Class
A DateTime class allows you to manage time and dates in a manner that is impossible with the mktime and strtotime functions . Using dateinterval and datetimezoneClasses, we are able to perform standard functions such as adding or subtracting time intervals on a date or change of current time zone. the DateTime class is also expandable, so it can provide additional functionality, while making the code cleaner and reading it easier.
Exceptions (Exceptions)
In PHP5 اجرای , the exception was implemented. Like other programming languages such as Java and c#, exception are used for "throw" errors. Taking exception is done by shutting down the code you want to put in the test block. After that you need to create a receiver block to get any existing exception in the test block.
Namespaces (namespaces)
Before the namespace, PHP would put every variable, function, and class global. This advantage gives developers the assurance that their apps have a function and a unique class name.
Hashing API
A while ago, there was a problem with some sites that unwanted passwords were hacked. At the time, the use of The MD5 function was sufficient to encrypt the password, so there was no problem of safety. There's a problem with MD5 and SHA1 , which they quickly do to make the algorithm. Next to the invention of faster processors and GPUusage, people have the ability to process hundreds of thousands of hashes per second even on رایانهدسکتاپ or laptop.
The new hashing API, which is introduced in PHP 5.5 , provides an easy-to-use layer at the top of bcrypt to create secure hashes (now), which solves it much harder by hackers. The example below shows how to hash every variable of the string.
<? Php$hash = Password_hash ($password, PASSWORD_BCRYPT, [' cost ' = > 20]);
Simplexml Class
When we have to head over with the xml files, we tend to use the simplexml class. This class allows for easy reading and editing of XML files through objects. Using these objects will allow you to get the usual values and also a set of simple ways to change the XML structure to restore values and repeat it in arrays. If you just need something special in XML and using the XPath internal method , you can set the simplexml Element to the path just for the direction you provided. In addition to reading XML,simplexml provides methods to create new documents or inject imported XML elements . It can be stored in multiple lines of code.
Web Design with PHP
Web Design includes various skills and disciplines in the production and maintenance of Web sites. Various web design backgrounds include graphical web design, which includes user interface design (UI), including standard code and proprietary software and user Experience design (UX) and search engine optimization. Most people are working in teams who cover different aspects of the design process. Although some designers are all covered as full stack .
The term web design is usually used to describe the process of front-end design (client side) of the website. Web design is somewhat overlaps with web Engineering in a wide range of web development. Web designers are expected to be aware of usability and if their role includes markup, it is expected that they are also updated with Web Access guidelines.
At the moment, almost all businesses in the world need a website. Websites have a wide range of applications and can be used for various applications including (personal, informational, retail, ecommerce, social networks, advertising, etc.). Web programming is divided into two parts of client side and server side. The server section means processes that are in the server side and are generated based on the processing of responses and the client side or the same user is displayed. The graphical sections of the site, which include the site's layering, fonts, colors, photographs, movies and facades that are performed by client-side technologies and behind-the-scenes tasks such as communicating with the server-side database.
Now a completely proven fact that for the prosperity of any company, it must have its presence on the digital camera. While social media can be a good place to draw attention, but without having the right website does not create a picture of that company. As a result, these jobs employ the best web development company to make sure that they have designed the website to allow them to stretch as much as possible.
There are several technologies that exist in the market for the development of a website but most developers use PHP as a web development technology. This has led to a dramatic increase in PHP development companies . There are several reasons why PHP chooses Web developers to create a website. As originally said , PHP is a server-side scripting language, meaning that the client receives output only because the processing is happening on the server. Processing is done using server resources before sending the output. It is unlike languages such as JavaScript that the language is processed on the client computer and the resources used by the computer are not server.
PHP and MySQL MySQL
Mai MySQL (MySQL) is a kind of open source database Management system and a relationship that provides a lot of possibilities for users. MySQL is used by many popular websites including Facebook, Flickr, MediaWiki, Twitter and YouTube. In addition to all MySQL Database management system relational (RDMS) such as, MS Access, Oracle, Sybase, informix, Postgrass MySQL, SQLite and SMS Server use SQL as the language of their standard database. S is the standard language for the relational database system.
The database is the best choice to store data in your Web application, and the MySQL database server has always been the most popular choice among PHP developers . It is almost supported by any hosting company that offers PHP , and it makes it easy to do, and you can even download and install it on your PC.
Designpatternsin PHP
Cellular reuse is available for common problems in software design that are provided using design patterns in PHP. Relationships and interactions between classes or objects are shown by patterns. This concept is used to speed up the development process by providing designed, proven and designed paradigms. You can reuse your code flexible by using design patterns. There are three types of design patterns. Namely, creativity, structural, behavioral.
- Creativity patterns: They are used to construct objects in a way that can be separated from their implementation system.
- Structural patterns: They are used to shape large structures between different objects.
- Memes: They are used to manage algorithms, relationships and responsibilities between objects.
PHP Frameworks (php)
Many have been created for PHP, which gives web developers the power to build complex and secure applications. Frek PHPis a Web architecture that places various methods in itself and includes a series of security policies and reusable code and components for fast coding of Web applications. These freuses offer many advantages to the developer. The famous freons of PHP can be pointed to the following:
Frimurk Lavearl was introduced in 2011 and created a fundamental change in the form of PHP programming. The slogan of laravel is "Frik PHP for Web craftsmen". The greater similarity of laravel programming in natural language makes it easier to develop and change the codes written in the past. Also, taking advantage of the latest standards and software production methods makes it easy to work with Laravel for programmers and developers .
Symphony is one of the stable or stable PHP in the field of web design. Its scalability and flexibility allows developers to work freely in their own skills. As a flexible Frik has many reusable arrays that developers use in the form of configuration forms, data verification, engine extension, and security... They use.
Fermork Kdygener (Codeigniter)
The Codeigniter or Kdigener is a very light open source Web site, and helps developers build dynamic Web pages quickly. Comprehensive documentation and flexible nature it's incredibly easy to learn this micro-Frik. Its installation is lightweight and hassle-free and has little adjustments. It's also a powerful library. It's not limited to the MVC pattern, which is a model and View in it, but controller are mandatory.
Yii is fast, safe and high-performance and can greatly reduce coding time. This is a completely object-centered. The lazy loading technique Lazy as well as components for the development of the tools. To build a variety of Web applications such as forums, portals, content management systems, service restful, ecommerce websites and so on. Also Yii has a code builder tool called gii , which includes a full manufacturer of crud .
The Falcon is using a model-view-controllerarchitecture, and programmers are easier and more rapidly to design a complex and large program. It has minimal use of resources. Falcon is a extention for PHP written in C language . You can optimize the Phalcon to fit your needs.
The Zand is very secure and reliable. It supports MVC architecture and is designed based on an agile method (Agile) . Also , the Zend is fully orientedSOLIDin its structure. It has good features like drag-drop editing, which uses HTML, javascript, Css , and the online PHP - moment system , and encrypts the encryption tools.
PHP-based Content management systems (PHP)
WordPress (WordPress) is a Content management system (CMS) based on PHP and MySQL, which is commonly used with MySQL or Maria Dee's database servers, but can also use the database engine (SQLite). These features include a plugin architecture and a template system that is said inside WordPress as a theme. WordPress is more relevant with blogging (the main purpose of the first time it was created) but it has evolved to support other types of Web content including traditional mailing lists and forums, media galleries, membership sites, learning Management systems (LMS) and online stores.
WordPress has used over 60 million websites including 33.6% of the top 10 million Web sites up to April 2019, WordPress is one of the most popular system content management solutions (CMS) used. WordPress has also been used for other functional domains, such as surround display systems (PDS).
Joomla is a free content management system and open source (CMS) for publishing Web content that is by. Open Source matters, INC is built. The program is built on a Web application viewer, a controller that can be used independently of the CMS . Joomla is written in PHP language, uses object-oriented programming techniques and software design patterns and stores data in MySQL,MS SQL or PostgreSQL , and includes features such as page caches, RSSfeeds, printableversions of pages, blogs, search and support of international languages.
More than 8000 free and commercial extensions are available in the official list of Joomla extensions and other resources are also available that allow you to adjust your site to suit your specific needs. According to 2019 years, after WordPress and Drupal was the fourth most widely used content management system on the Internet.
Drupal is a free content management system (CMS) and open source with a large backup community. Drupal is written in PHP and is distributed under the GNU Public License. Drupal FRIEDK Beck have 2.3% of the total websites around the world, and are drawn from personal blogs to organizational, political and public sites. Systems also use Drupal to manage knowledge and business collaboration.
PHP code example (PHP)
The following simple program has been writtenwith PHP code embedded in an HTML directory:
<! DOCTYPE HTML >
Html<>
<Head>
<Title>PHP "Hello, World!" program</title>
</Head>
<Body>
<? Php echo ' < p > Hello, World! </p > '; ? >
</Body>
</Html>
However, since there is no necessity for PHP code embedded in HTML , the simplest version of Hello, World! May be written as follows.
<? Php echo ' Hello, World! ' ;
The PHP interpreter only runs the PHP code in its range. Anything outside of it is not processed by PHP, although non- PHP text is still exposed to the control structures described in php code . The most common determinant of </PHP to open and? > Are to close the PHP sections. The form is shortened <? There is also a short determinant that the script files are less portable because their support can be disabled in the configuration of PHP . There is no theory against the short echo tag <? =. Before PHP 5.4.0, this is a short for () echoonly enabled by setting short_open_tag configuration , while for PHP 5.4.0 and then is always available. The goal of all these determinants isto separate PHP code from non- php content such as JavaScript code or HTML markup .
The first form of determinants, <? Php and? >, In XHTML and other XML documents create XML processing instructions properly. This means that the mix resulting from PHP code and other markup in the server-side file, XML is well-formed.
Variables with the dollar symbol are prefix, and one type is not required to be specified beforehand. PHP 5 offers a kind of hint that allows functions to force their parameters to object a specific class, arrays, interfaces or functions. However, before PHP 7.0, type hints cannot be used with scale types such as Integer or string.
Unlike function and class names, variable names are case sensitive. Both the strings have two quotes ("" ") and " Heredoc " have the ability to change the variable value within the string. PHP treats new lines as a white space in a free-form language, and thestatement of Simcalon ends. PHP has three common variant types:/* */block Marks and inline description. A//or # is used for single-line comments. Echo phrase is one of several features that PHP provides for output text.
In terms of keywords and the language of the و tongue, PHP is similar to the style of C . If If, For example circles ,and its performance efficiency in the Sax is similar with languages such as c#, java, si plus plus and perl .
Data types
PHP saves the correct numbers in an affiliate domain to the platform, or as an integer of 32, 64 or 128-bit equivalent to a long type in C . Unregistered integer numbers in specific positions are converted to the signed values, which is a different behavior with many other programming languages. Interest variables can be assigned using decimal symbols (positive and negative), octal, hexagonal and binary.
Floating numbers are also stored in a specific range for the platform. They can be characterized by using floating point markup or two forms of scientific markup. PHP is a type of native Boolean that is similar to native native types in Java and C++ . Using the conversion rules of the Booleantype, nonzero values areinterpreted equally correctly and zero as inaccurate, such as Perl and + + C.
The null data type indicates a variable that has no value. NULL is the only permitted value for this type of data. Placeholders of type "resource" refers to source of external resources. These are usually created by functions of a particular suffix and are only processed with functions with the same suffix. Examples include file source, image and Database.
Arrays can include elements of any kind of PHP that include resources, objects and even other arrays. The order is retained in a list of values and alerts with keys and values, and these two can be mixed together. PHP also supports strings, which can be used with single quotes, double quotes, nowdoc syntax, or heredoc استفاده شوند.
The standard PHP library (SPL) strives to solve the standard problems and to make the interface and access classes of data to bedeveloped.
Functions
PHP defines a large set of functions in the original language, and many of them are available in different extensions as well.
Custom functions may be defined by the developer:
Myagefunction(int $birthYear): string
{
Calculate the age by subtracting the birth year from the current year.
$YearsOld = Date (' Y ')-$birthYear;
Return the age in a.
Return $yearsOld. ' Year ' . ($YearsOld! = 1 ? 'S':');
}
Echo ' I am currently ' . myage (1995). ' Old. ' ;
In the year 2020, the sample program output above "I am currently 25 years old." ..
Instead of performance markers, functions in PHP can be referenced with a string containing their names. In this way, the normal PHP functions , for example, are used as calls or in function tables. user-defined functions may be caused at any time without prototyping. Functions may be defined inside the code blocks, making the decision that a function is defined or not, allowed to run. the function_exists function Specifies the functionality with the specified name already defined or not. Functional conversations must use parentheses, except for the functions of the zero argument class that are read with the new PHP operator , in this case the parenthesis is optional.
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