PHP is forgiving: PHP language tries to be as forgiving as possible. PHP Syntax is C-Like. Common Uses of PHP PHP performs system functions, i.e. from files on a system it can create, open, read, write, and close them. The other uses of PHP are: PHP can handle forms, i.e. gather data from files, save data to a file, thru email youPHP Conditional Statements. Very often when you write code, you want to perform different actions for different conditions. You can use conditional statements in your code to do this. In PHP we have the following conditional statements: if statement - executes some code if one condition is trueDescription ¶. $_SERVER is an array containing information such as headers, paths, and script locations. The entries in this array are created by the web server, therefore there is no guarantee that every web server will provide any of these; servers may omit some, or provide others not listed here. However, most of these variables are ...The sprintf () function writes a formatted string to a variable. The arg1, arg2, ++ parameters will be inserted at percent (%) signs in the main string. This function works "step-by-step". At the first % sign, arg1 is inserted, at the second % sign, arg2 is inserted, etc. Note: If there are more % signs than arguments, you must use placeholders ...Aug 1, 2023 · $b = (true || foo()); $c = (false and foo()); $d = (true or foo()); // -------------------- // "||" has a greater precedence than "or" // The result of the expression (false || true) is assigned to $e // Acts like: ($e = (false || true)) $e = false || true; // The constant false is assigned to $f before the "or" operation occurs PHP (Hypertext Processor) is a general-purpose scripting language and interpreter that is freely available and widely used for web development. The language is used primarily for server-side scripting, although it can also be used for command-line scripting and, to a limited degree, desktop applications. The acronym PHP was originally derived ...Dec 23, 2022 · The Definitive PHP 7.2, 7.3, 7.4, 8.0, and 8.1 Benchmarks (2023) The year 2021 has been highly eventful for PHP ( and Kinsta ). PHP 8.0 is already a year old, and the much-anticipated PHP 8.1 was released on November 25, 2021, bringing many exciting features. You can catch up on all the latest PHP 8.1 features in our in-depth post. The NOT or complement operator ( ~ ) and negative binary numbers can be confusing. ~2 = -3 because you use the formula ~x = -x - 1 The bitwise complement of a decimal number is the negation of the number minus 1. NOTE: just using 4 bits here for the examples below but in reality PHP uses 32 bits.Write a PHP program to swap two numbers with and without using third variable. Input: a=5 b=10. Output: a=10 b=5. 12) Adding Two Numbers. Write a PHP program to add two numbers. First Input: 10. Second Input: 20. Output: 30. 13) Subtracting Two Numbers. Write a PHP program to subtract two numbers. First Input: 50. Second Input: 10. Output: 40 ...The Top 5 PHP Hosting Providers. Bluehost – Best overall PHP hosting provider. SiteGround – Best for PHP features. Hostinger – Best for affordability. WP Engine – Best for scalability. HostPapa – Best for online guidance.To change the PHP settings, open your User or Workspace Settings ( ⌘, (Windows, Linux Ctrl+,)) and type 'php' to filter the list of available settings. To set the PHP executable path, select the Edit in settings.json link under PHP > Validate: Executable Path, which will open your user settings.json file.Elvis ?: returns the first argument if it contains a "true-ish" value (see which values are considered loosely equal to true in the first line of the Loose comparisons with == table). Dec 8, 2021 · 7 Min Read. PHP (Hypertext Preprocessor) is known as a general-purpose scripting language that can be utilized to create intuitive and dynamic websites. It was among the pioneer server-side language that can be integrated into HTML, making it easier to include functionality to web pages without requiring to call external data. Just like any other programming language, PHP also supports various types of operations like arithmetic operations (addition, subtraction, etc), logical operations (AND, OR etc), Increment/Decrement Operations, etc. Thus, PHP provides us with many operators to perform such operations on various operands or variables, or values.Sep 4, 2023 · 0.01 7649551 US Dollars. 1 USD = 56.6587 PHP. We use the mid-market rate for our Converter. This is for informational purposes only. You won’t receive this rate when sending money. Login to view send rates. Philippine Peso to US Dollar conversion — Last updated Sep 3, 2023, 08:11 UTC. PHP 8.1.23 Released! Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control StructuresWrite a PHP program to swap two numbers with and without using third variable. Input: a=5 b=10. Output: a=10 b=5. 12) Adding Two Numbers. Write a PHP program to add two numbers. First Input: 10. Second Input: 20. Output: 30. 13) Subtracting Two Numbers. Write a PHP program to subtract two numbers. First Input: 50. Second Input: 10. Output: 40 ...php 教程 php 是一种创建动态交互性站点的强有力的服务器端脚本语言。 php 是免费的，并且使用非常广泛。同时，对于像微软 asp 这样的竞争者来说，php 无疑是另一种高效率的选项。 Apr 24, 2023 · PHP is a server-side scripting language, which means that a server executes the instructions in a script. Then, the server provides data on request, channels the requests, and organizes the information in a database. When a web server receives a script, it will process the request and send output to a web browser in an HTML format. Select and Filter Data From a MySQL Database. The WHERE clause is used to filter records. The WHERE clause is used to extract only those records that fulfill a specified condition. SELECT column_name (s) FROM table_name WHERE column_name operator value. To learn more about SQL, please visit our SQL tutorial.PHP Constants. A constant is an identifier (name) for a simple value. The value cannot be changed during the script. A valid constant name starts with a letter or underscore (no $ sign before the constant name). Note: Unlike variables, constants are automatically global across the entire script. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. The user friendly PHP online compiler that allows you to Write PHP code and run it online. The PHP text editor also supports taking input from the user and standard libraries.Nick Schäferhoff. Our PHP cheat sheet aims to help anyone trying to get proficient in or improve their knowledge of PHP. The programming language is among the most popular in web development. It’s in the heart of WordPress, the world’s most popular CMS, and also forms the base of other platforms like Joomla and Drupal.Jun 25, 2021 · The structure which defines PHP computer language is called PHP syntax. The PHP script is executed on the server and the HTML result is sent to the browser. It can normally have HTML and PHP tags. PHP or Hypertext Preprocessor is a widely used open-source general-purpose scripting language and can be embedded with HTML. PHP Constants. A constant is an identifier (name) for a simple value. The value cannot be changed during the script. A valid constant name starts with a letter or underscore (no $ sign before the constant name). Note: Unlike variables, constants are automatically global across the entire script.PHP Resource. The special resource type is not an actual data type. It is the storing of a reference to functions and resources external to PHP. A common example of using the resource data type is a database call. We will not talk about the resource type here, since it is an advanced topic.Comparison Operators. Comparison operators, as their name implies, allow you to compare two values. You may also be interested in viewing the type comparison tables, as they show examples of various type related comparisons.PHP is a recursive acronym for "PHP: Hypertext Preprocessor". PHP is a server side scripting language that is embedded in HTML. It is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites. It is integrated with a number of popular databases, including MySQL, PostgreSQL, Oracle, Sybase, Informix, and ... $b = (true || foo()); $c = (false and foo()); $d = (true or foo()); // -------------------- // "||" has a greater precedence than "or" // The result of the expression (false || true) is assigned to $e // Acts like: ($e = (false || true)) $e = false || true; // The constant false is assigned to $f before the "or" operation occursMySQL is a database system used on the web. MySQL is a database system that runs on a server. MySQL is ideal for both small and large applications. MySQL is very fast, reliable, and easy to use. MySQL uses standard SQL. MySQL compiles on a number of platforms. MySQL is free to download and use. MySQL is developed, distributed, and supported by ... PHP Programming at Wikibooks. PHP is a general-purpose scripting language geared towards web development. [9] It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. [10] [11] The PHP reference implementation is now produced by the PHP Group. [12] PHP was originally an abbreviation of Personal Home ...Specifies the number of decimal digits to round to. Default is 0. mode. Optional. Specifies a constant to specify the rounding mode: PHP_ROUND_HALF_UP - Default. Rounds number up to precision decimal, when it is half way there. Rounds 1.5 to 2 and -1.5 to -2. PHP_ROUND_HALF_DOWN - Round number down to precision decimal places, when it is half ...PHP include vs. require. The require statement is also used to include a file into the PHP code. However, there is one big difference between include and require; when a file is included with the include statement and PHP cannot find it, the script will continue to execute:PHP 8.1.23 Released! Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control StructuresExample Get your own PHP Server. When the user fills out the form above and clicks the submit button, the form data is sent for processing to a PHP file named "welcome.php". The form data is sent with the HTTP POST method. To display the submitted data you could simply echo all the variables. The "welcome.php" looks like this:Definition and Usage The <b> tag specifies bold text without any extra importance. Tips and Notes Note: According to the HTML5 specification, the <b> tag should be used as a LAST resort when no other tag is more appropriate. The Definitive PHP 7.2, 7.3, 7.4, 8.0, and 8.1 Benchmarks (2023) The year 2021 has been highly eventful for PHP ( and Kinsta ). PHP 8.0 is already a year old, and the much-anticipated PHP 8.1 was released on November 25, 2021, bringing many exciting features. You can catch up on all the latest PHP 8.1 features in our in-depth post.Jul 24, 2023 · A file with the PHP file extension is a PHP source code file that contains Hypertext Preprocessor code. They are often used as web page files that generate HTML from a PHP engine running on a web server. The HTML content that the PHP engine creates from the code is what's seen in the web browser. Since the web server is where the PHP code is ... PHP.B, a neurotropic variant of AAV9, is better than AAV9 at gaining access to the CNS of C57BL/6J mice following IV injection but fails to reach the CNS of BALB/cJ mice. These results were surprising because in vivo transduction of AAV serotypes generally tracks between strains of mice.This PHP tutorial, whether you’re a beginner or a professional, our tutorial is designed to provide you with in-depth knowledge of the PHP scripting language. With our PHP tutorial, you’ll learn all the important topics, including control statements, functions, arrays, strings, file handling, form handling, regular expressions, date and ...PHP is a general-purpose scripting language widely used as a server-side language for creating dynamic web pages. Though its reputation is mixed, PHP is still extremely popular and is used in over 75% of all websites where the server-side programming language is known. Andrea Sachs. and. Heidi Pérez-Moreno. September 7, 2023 at 11:25 a.m. EDT. (Washington Post Illustration; iStock) 9 min. It was supposed to be a quick trip to pick up her kid from summer camp ...PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ».MySQL is a database system used on the web. MySQL is a database system that runs on a server. MySQL is ideal for both small and large applications. MySQL is very fast, reliable, and easy to use. MySQL uses standard SQL. MySQL compiles on a number of platforms. MySQL is free to download and use. MySQL is developed, distributed, and supported by ... PHP (Hypertext Processor) is a general-purpose scripting language and interpreter that is freely available and widely used for web development. The language is used primarily for server-side scripting, although it can also be used for command-line scripting and, to a limited degree, desktop applications. The acronym PHP was originally derived ... If you have permission to SSH into the remote server, use the command line to check the installed PHP version. This method is also useful for checking the PHP version installed locally. 1. Type the PHP command: php -v. 2. The php -v command works on Linux, macOS, Windows, and other supported systems. Its output contains the PHP version number ...Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.Write a PHP program to swap two numbers with and without using third variable. Input: a=5 b=10. Output: a=10 b=5. 12) Adding Two Numbers. Write a PHP program to add two numbers. First Input: 10. Second Input: 20. Output: 30. 13) Subtracting Two Numbers. Write a PHP program to subtract two numbers. First Input: 50. Second Input: 10. Output: 40 ... This PHP tutorial, whether you’re a beginner or a professional, our tutorial is designed to provide you with in-depth knowledge of the PHP scripting language. With our PHP tutorial, you’ll learn all the important topics, including control statements, functions, arrays, strings, file handling, form handling, regular expressions, date and ...Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. لغة PHP (والتي هي اختصارٌ تعاودي للعبارة PHP: Hypertext Preprocessor) هي لغةٌ مفتوحة المصدر شائعة الاستخدام لها مجال استخدامٍ عامٍ لكنها تناسب تطوير الويب ودمج لغة HTML معها. الذي يُميّز PHP عن الشيفرات التي ... PHP is forgiving: PHP language tries to be as forgiving as possible. PHP Syntax is C-Like. Common Uses of PHP PHP performs system functions, i.e. from files on a system it can create, open, read, write, and close them. The other uses of PHP are: PHP can handle forms, i.e. gather data from files, save data to a file, thru email youJun 17, 2022 · The term PHP is an acronym for PHP: Hypertext Preprocessor. PHP is a server-side scripting language designed specifically for web development. It is open-source which means it is free to download and use. It is very simple to learn and use. The files have the extension “.php”. Rasmus Lerdorf inspired the first version of PHP and ... PHP can create, open, read, write, delete, and close files on the server. PHP can collect form data. PHP can send and receive cookies. PHP can add, delete, modify data in your database. PHP can be used to control user-access. PHP can encrypt data. With PHP you are not limited to output HTML. You can output images or PDF files.لغة PHP (والتي هي اختصارٌ تعاودي للعبارة PHP: Hypertext Preprocessor) هي لغةٌ مفتوحة المصدر شائعة الاستخدام لها مجال استخدامٍ عامٍ لكنها تناسب تطوير الويب ودمج لغة HTML معها. الذي يُميّز PHP عن الشيفرات التي ...Type Operators. An operator is something that takes one or more values (or expressions, in programming jargon) and yields another value (so that the construction itself becomes an expression). Operators can be grouped according to the number of values they take.Specifies the number of decimal digits to round to. Default is 0. mode. Optional. Specifies a constant to specify the rounding mode: PHP_ROUND_HALF_UP - Default. Rounds number up to precision decimal, when it is half way there. Rounds 1.5 to 2 and -1.5 to -2. PHP_ROUND_HALF_DOWN - Round number down to precision decimal places, when it is half ...PHP Operators. Operators are used to perform operations on variables and values. PHP divides the operators in the following groups: Arithmetic operators. Assignment operators. Comparison operators. Increment/Decrement operators. Logical operators. String operators. Assignment Operators. ¶. The basic assignment operator is "=". Your first inclination might be to think of this as "equal to". Don't. It really means that the left operand gets set to the value of the expression on the right (that is, "gets set to"). The value of an assignment expression is the value assigned.Aug 1, 2023 · The NOT or complement operator ( ~ ) and negative binary numbers can be confusing. ~2 = -3 because you use the formula ~x = -x - 1 The bitwise complement of a decimal number is the negation of the number minus 1. NOTE: just using 4 bits here for the examples below but in reality PHP uses 32 bits. PHPUnit. PHPUnit is perhaps the best PHP library for performing unit testing in PHP web applications. It is used to test the application’s code for possible errors and bugs. While performing the unit testing with PHPUnit, developers can resolve various application bugs that may arise during the run-time execution.PHP: Hypertext Preprocessor. popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world. What's new in 8.2 Download. 8.2.9 · Changelog · Upgrading. I've just picked 2 files and put them in my source PHP root . class.phpmailer.php class.smtp.php. In PHP, the file needs to be added . require_once('class.smtp.php'); require_once('class.phpmailer.php'); After this, it's just code: require_once('class.smtp.php'); require_once('class.phpmailer.php'); ...PHP is a general-purpose scripting language widely used as a server-side language for creating dynamic web pages. Though its reputation is mixed, PHP is still extremely popular and is used in over 75% of all websites where the server-side programming language is known. Mar 4, 2010 · 7. AND operation: & -> will do the bitwise AND operation , it just doing operation based on the bit values. && -> It will do logical AND operation. It is just the check the values is true or false. Based on the boolean value , it will evaluation the expression. Share. Improve this answer. Michael Shashoua. PHP is a programming language used to script websites that are dynamic and interactive. You’ll find it in various types of web applications, from e-commerce websites to CRM systems like HubSpot and Salesforce. The term PHP stands for PHP Hypertext Preprocessor. Originally, the “PHP” within the acronym stood for Personal ...Mar 4, 2010 · 7. AND operation: & -> will do the bitwise AND operation , it just doing operation based on the bit values. && -> It will do logical AND operation. It is just the check the values is true or false. Based on the boolean value , it will evaluation the expression. Share. Improve this answer. PHP PGO build for maximum performance (old) amd64 (x86_64) Builds. PHP 7 provides full 64-bit support. The x64 builds of PHP 7 support native 64-bit integers, LFS, 64-bit memory_limit and much more. x64 builds are recommended (almost all Windows installations support x64). Long and multibyte path. PHP 7.1+ supports long and UTF-8 paths.10 hours ago · Andrea Sachs. and. Heidi Pérez-Moreno. September 7, 2023 at 11:25 a.m. EDT. (Washington Post Illustration; iStock) 9 min. It was supposed to be a quick trip to pick up her kid from summer camp ... لغة PHP (والتي هي اختصارٌ تعاودي للعبارة PHP: Hypertext Preprocessor) هي لغةٌ مفتوحة المصدر شائعة الاستخدام لها مجال استخدامٍ عامٍ لكنها تناسب تطوير الويب ودمج لغة HTML معها. الذي يُميّز PHP عن الشيفرات التي ... Abstract classes and methods are when the parent class has a named method, but need its child class (es) to fill out the tasks. An abstract class is a class that contains at least one abstract method. An abstract method is a method that is declared, but not implemented in the code. An abstract class or method is defined with the abstract keyword:The structure which defines PHP computer language is called PHP syntax. The PHP script is executed on the server and the HTML result is sent to the browser. It can normally have HTML and PHP tags. PHP or Hypertext Preprocessor is a widely used open-source general-purpose scripting language and can be embedded with HTML.Write a PHP program to swap two numbers with and without using third variable. Input: a=5 b=10. Output: a=10 b=5. 12) Adding Two Numbers. Write a PHP program to add two numbers. First Input: 10. Second Input: 20. Output: 30. 13) Subtracting Two Numbers. Write a PHP program to subtract two numbers. First Input: 50. Second Input: 10. Output: 40 ...Where src/ is the directory containing all your PHP code. Then, run the commands to build and run the Docker image: $ docker build -t my-php-app . $ docker run -d --name my-running-app my-php-app. We recommend that you add a php.ini configuration file; see the "Configuration" section for details.Mar 27, 2021 · I've just picked 2 files and put them in my source PHP root . class.phpmailer.php class.smtp.php. In PHP, the file needs to be added . require_once('class.smtp.php'); require_once('class.phpmailer.php'); After this, it's just code: require_once('class.smtp.php'); require_once('class.phpmailer.php'); ... The user friendly PHP online compiler that allows you to Write PHP code and run it online. The PHP text editor also supports taking input from the user and standard libraries.PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ».10 Best PHP Books to Help You Learn PHP. Best PHP Books. The Joy of PHP Programming: A Beginner’s Guide – by Alan Forbes. PHP & MySQL Novice to Ninja – by Kevin Yank. Head First PHP & MySQL – by Lynn Beighley & Michael Morrison. PHP: A Beginner’s Guide – by Vikram Vaswani. Murach’s PHP & MySQL – by Joel Murach & Ray Harris.The NOT or complement operator ( ~ ) and negative binary numbers can be confusing. ~2 = -3 because you use the formula ~x = -x - 1 The bitwise complement of a decimal number is the negation of the number minus 1. NOTE: just using 4 bits here for the examples below but in reality PHP uses 32 bits.PHP Objects - Definition and UsageIn PHP, Object is a compound data type (along with arrays). Values of more than one types can be stored together in a single variable. Object is an instance of either a built-in or user defined class. In addition to properties, class defines functionality associated with data.PriMar 30, 2023 · D. Dharmendra_Kumar. Read. Discuss. Courses. Full form of PHP is Hypertext Preprocessor and earlier it was abbreviated as Personal Home Page. It is a general-purpose programming language used to design a website or web application. It is the server-side scripting language embedded with HTML to develop Static website, Dynamic website, or Web ... Basic PHP Syntax A PHP script can be placed anywhere in the document. A PHP script starts with <?php and ends with ?>: <?php // PHP code goes here ?> The default file extension for PHP files is " .php ". A PHP file normally contains HTML tags, and some PHP scripting code.
PHP Constants. A constant is an identifier (name) for a simple value. The value cannot be changed during the script. A valid constant name starts with a letter or underscore (no $ sign before the constant name). Note: Unlike variables, constants are automatically global across the entire script.. 1234.001 1024x1024.jpeg
Welcome. Welcome to the learn-php.org free interactive PHP tutorial. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the PHP programming language. There is no need to download anything - just click on the chapter you wish to begin from, and follow the instructions.PHP Operators. Operators are used to perform operations on variables and values. PHP divides the operators in the following groups: Arithmetic operators. Assignment operators. Comparison operators. Increment/Decrement operators. Logical operators. String operators.PHP is a recursive acronym for "PHP: Hypertext Preprocessor". PHP is a server side scripting language that is embedded in HTML. It is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites. It is integrated with a number of popular databases, including MySQL, PostgreSQL, Oracle, Sybase, Informix, and ... 10 hours ago · Andrea Sachs. and. Heidi Pérez-Moreno. September 7, 2023 at 11:25 a.m. EDT. (Washington Post Illustration; iStock) 9 min. It was supposed to be a quick trip to pick up her kid from summer camp ... Of the adeno-associated viruses (AAVs), AAV9 is known for its capability to cross the blood–brain barrier (BBB) and can, therefore, be used as a noninvasive method to target the central nervous system. Furthermore, the addition of the peptide PhP.B to AAV9 increases its transduction across the BBB by 40-fold. Another neurotropic serotype, AAV5, has been shown as a gene therapeutic delivery ...PHP $_GET. PHP $_GET is a PHP super global variable which is used to collect form data after submitting an HTML form with method="get". $_GET can also collect data sent in the URL. Assume we have an HTML page that contains a hyperlink with parameters:Write a PHP program to swap two numbers with and without using third variable. Input: a=5 b=10. Output: a=10 b=5. 12) Adding Two Numbers. Write a PHP program to add two numbers. First Input: 10. Second Input: 20. Output: 30. 13) Subtracting Two Numbers. Write a PHP program to subtract two numbers. First Input: 50. Second Input: 10. Output: 40 ... PHP $_GET. PHP $_GET is a PHP super global variable which is used to collect form data after submitting an HTML form with method="get". $_GET can also collect data sent in the URL. Assume we have an HTML page that contains a hyperlink with parameters:Sep 30, 2021 · Michael Shashoua. PHP is a programming language used to script websites that are dynamic and interactive. You’ll find it in various types of web applications, from e-commerce websites to CRM systems like HubSpot and Salesforce. The term PHP stands for PHP Hypertext Preprocessor. Originally, the “PHP” within the acronym stood for Personal ... PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ».Aug 1, 2023 · PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML. Click on the URL button, Enter URL and Submit. This tool supports loading the PHP File to beautify. Click on the Upload button and select File. It beautify pure PHP framework file such as Laravel, CodeIgniter, YII, CakePHP, Symfony and many more one file at a time. PHP Source Code Beautifier Online works well on Windows, MAC, Linux, Chrome ...Mar 4, 2010 · 7. AND operation: & -> will do the bitwise AND operation , it just doing operation based on the bit values. && -> It will do logical AND operation. It is just the check the values is true or false. Based on the boolean value , it will evaluation the expression. Share. Improve this answer. PHP operators for beginners and professionals with examples, php file, php session, php date, php array, php form, functions, time, xml, ajax, php mysql, regex ...The NOT or complement operator ( ~ ) and negative binary numbers can be confusing. ~2 = -3 because you use the formula ~x = -x - 1 The bitwise complement of a decimal number is the negation of the number minus 1. NOTE: just using 4 bits here for the examples below but in reality PHP uses 32 bits..