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   • What does "<<" mean in PHP?

     Top Answer

     Answered Dec 28, 2010 · 4 votes

     this is the shift left operator.

     so in your example you are shifting left the value 1 , $count_log2 times to the left. so the value is 2^count_log2.

     1 in 8 bit binary is 00000001 so if $count_log2 = 4, we need to get 2^4 = 16.

     shifting left means moving the 1 left 4 times (since $count_log2 = 4). lets do the steps.

     • 00000010 (2 in decimal)
     • 00000100 (4 in decimal)
     • 00001000 (8 in decimal)
     • 00010000 (16 in decimal)

     so we got 2^4.

     a common reason for using shift operation is that it takes less time for the processor to do a shift operation than using multiplication.

     Other Answers

     Answered Dec 28, 2010 · 1 votes

     Left Bitshift, http://php.net/manual/en/language.operators.bitwise.php

     Other Answers

     Answered Dec 28, 2010 · 1 votes

     << and >> are the so-called bitshift operator.

     x << n shifts the bits in the integer x n places to the left, effectively multiplying x with 2 to the power of n.

     Similarly x >> n shifts to the left, dividing x by 2 to the power of n.

     Check all answers on Stack Overflow

     1/5

   • What does '

     Top Answer

     Answered Nov 19, 2021 · 336 votes

     It's a shorthand for <?php echo $a; ?>.

     It's enabled by default since 5.4.0 regardless of php.ini settings.

     Other Answers

     Answered Dec 28, 2010 · 1 votes

     Left Bitshift, http://php.net/manual/en/language.operators.bitwise.php

     Other Answers

     Answered Dec 28, 2010 · 1 votes

     << and >> are the so-called bitshift operator.

     x << n shifts the bits in the integer x n places to the left, effectively multiplying x with 2 to the power of n.

     Similarly x >> n shifts to the left, dividing x by 2 to the power of n.

     Check all answers on Stack Overflow

     2/5

   • What does ":" mean in PHP?

     Top Answer

     Answered Jan 20, 2011 · 40 votes

     It's called an Alternative Syntax For Control Structures. You should have an endwhile; somewhere after that. Basically, it allows you to omit braces {} from a while to make it look "prettier"...

     As far as your edit, it's called the Ternary Operator (it's the third section). Basically it's an assignment shorthand.

     $foo = $first ? $second : $third;

     is the same as saying (Just shorter):

     if ($first) { $foo = $second;} else { $foo = $third;}

     Other Answers

     Answered Dec 28, 2010 · 1 votes

     Left Bitshift, http://php.net/manual/en/language.operators.bitwise.php

     Other Answers

     Answered Dec 28, 2010 · 1 votes

     << and >> are the so-called bitshift operator.

     x << n shifts the bits in the integer x n places to the left, effectively multiplying x with 2 to the power of n.

     Similarly x >> n shifts to the left, dividing x by 2 to the power of n.

     Check all answers on Stack Overflow

     3/5

   • What does :: mean in php?

     Top Answer

     Answered Aug 05, 2011 · 21 votes

     It's the 'Scope Resolution Operator'.

     The Scope Resolution Operator (also called Paamayim Nekudotayim) or in simpler terms, the double colon, is a token that allows access to static, constant, and overridden properties or methods of a class.

     http://php.net/manual/en/language.oop5.paamayim-nekudotayim.php

     Check all answers on Stack Overflow

     4/5

   • What does @ mean in PHP?

     Top Answer

     Answered Apr 19, 2011 · 72 votes

     The @

     operator tells PHP to suppress error messages, so that they will not be shown.

     For instance, using:

     $result = mysql_query("this is an invalid query");-

     would result in a warning being shown, telling you that the MySQL query is invalid, while

     $result = @mysql_query("this is still an invalid query");-

     would not.

     Note, however, that this is very bad programming practice as it does not make error disappear, it just hides them, and it makes debugging a heck of a lot worse since you can't see what's actually wrong with your code.

     Instead of using @, you should disable error_reporting

     and display_errors

     just display_errors in php.ini

     Check all answers on Stack Overflow

     5/5

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2. stackoverflow.com › questions › 1080247What are the PHP operators "?" and ":" called and what do ...

   stackoverflow.com › questions › 1080247

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   Nov 29, 2015 · In this, for x, firstly the condition (a>b) is evaluated. If this condition becomes true, then x will become the value 5 (ie, x=5). But if the condition (a>b) becomes false, then x will attain the value 9 (ie, x=9). Ternary Operator. Sometimes conditional operator ? : is also called a ternary operator.

   Code sample

   echo ($colour === 'red') ? "Omg we're going to die" :

     ($colour === 'blue' ? "Ah sunshine and daisies" :

     ($colour === 'green' ? "Trees are green"

     : "The bloody colour is orange, isn't it? That was pointless."));

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4. www.freecodecamp.org › news › what-is-php-the-phpWhat is PHP? The PHP Programming Language Meaning Explained

   www.freecodecamp.org › news › what-is-php-the-php

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   • What Does Php Mean?
   • Advantages of Php
   • Who Uses Php
   • Is Php Dying?
   • How to Write Your First Hello World Program in Php
   • Conclusion

   The abbreviation PHP initially stood for Personal Homepage. But now it is a recursive acronym for Hypertext Preprocessor. (It's recursive in the sense that the first word itself is an abbreviation, so the full meaning doesn't follow the abbreviation.) The first version of PHP was launched 26 years ago. Now it's on version 8, released in November 20...

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   PHP has some advantages that have made it so popular, and it's been the go-to language for web servers for more than 15 years now. Here are some of PHP's benefits: 1. Cross-Platform: PHP is platform-independent. You don't have to have a particular OS to use it because it runs on every platform, whether it's Mac, Windows, or Linux. 2. Open Source: P...

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   A number of established companies and tech giants use PHP to run their servers and make a lot of incredible things. 1. Facebook: Facebook uses PHP to power its site. In turn, the company contributed to the community by creating an implementation known as Hip Hop for PHP. 2. Wikipedia: one of the world's largest sources of information on any topic, ...

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   Nowadays, there's an intense debate on whether PHP is on the decline or not. This is because of the advent and increasing popularity of other languages suited for the server-side such as JavaScript (Node JS), Python, Golang, and others. This has actually led to a lot of funny memes targeting PHP But is PHP really dying? The answer is no. Despite so...

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   Now that you have learned about PHP and its advantages, it's time to write your first Hello World program in it! First of all, you must have PHP installed on your local machine. You can get that done by installing an XAMP (Cross-Platform, Apache, MySQL, and PHP) or WAMP (Windows, Apache, MySQL, and PHP) server. XAMP works on all operating systems a...

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   PHP remains a relevant and widely-used language in web development. Despite the mockery and debate on whether it’s still valuable, PHP developers keep earning good livings from working with the language. So, PHP doesn't seem to be going anywhere anytime soon. Now, go code some PHP! Thank you for reading, and keep coding.

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5. www.gyata.ai › php › php-logoUnderstanding the PHP Logo: History, Design, and Usage

   www.gyata.ai › php › php-logo

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   Nov 7, 2023 · The PHP logo is quite simple and straightforward. It features the letters PHP in bold, block-like characters. The letters are capitalized and are set against a light-blue background, reflecting the color scheme commonly associated with PHP. The logo was created by Colin Viebrock in late 1995, just a few months after PHP was first released.

6. People also ask

   What is a PHP logo?

   • The PHP logo is quite simple and straightforward. It features the letters PHP in bold, block-like characters. The letters are capitalized and are set against a light-blue background, reflecting the color scheme commonly associated with PHP. The logo was created by Colin Viebrock in late 1995, just a few months after PHP was first released.

   Understanding the PHP Logo: History, Design, and Usage

   www.gyata.ai/php/php-logo/

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   What is PHP programming language?

   • The PHP Programming Language Meaning Explained PHP is an open-source server-side scripting language that many devs use for web development. It is also a general-purpose language that you can use to make lots of projects, including Graphical User Interfaces (GUIs).

   What is PHP? The PHP Programming Language Meaning Explained

   www.freecodecamp.org/news/what-is-php-the-php-programming-language-meaning-explained/

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   What does @ mean in PHP?

   • The @ symbol is the error control operator (aka the "silence" or "shut-up" operator). It makes PHP suppress any diagnostic error messages generated by the expression associated with it. Like unary operators, it has a precedence and associativity. Below are some examples: echo @(1 / 0); is giving me DivisionByZeroError I am using php 8.

   What is the use of the @ symbol in PHP? - Stack Overflow

   stackoverflow.com/questions/1032161/what-is-the-use-of-the-symbol-in-php

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   Is the PHP logo copyrighted?

   • The PHP logo is copyrighted, and using it for commercial purposes without the express permission of the PHP Group is a violation of copyright law. If you wish to use the PHP logo for commercial purposes, contact the PHP Group for permission. In conclusion, the PHP logo is a powerful symbol of the PHP scripting language.

   Understanding the PHP Logo: History, Design, and Usage

   www.gyata.ai/php/php-logo/

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7. www.freecodecamp.org › news › the-php-handbookThe PHP Handbook – Learn PHP for Beginners - freeCodeCamp.org

   www.freecodecamp.org › news › the-php-handbook

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   Jul 7, 2022 · Flavio Copes. PHP is an incredibly popular programming language. Statistics say it’s used by 80% of all websites. It’s the language that powers WordPress, the widely used content management system for websites. And it also powers a lot of different frameworks that make Web Development easier, like Laravel. Speaking of Laravel, it may be one ...

8. www.php.net › manual › enPHP: What is PHP? - Manual

   www.php.net › manual › en

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   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. Nice, but what does that mean?

9. php.adamharvey.name › download-logosPHP: Download Logos

   php.adamharvey.name › download-logos

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   Download Logos and Icons. Right click on one of the images and select "Save Image As" to save the logo (except where otherwise indicated). Then, link it to the main PHP site at php.net. In case you have found some PHP logos, icons or other material around the web, feel free to point those out to us, so we can include them here, if appropriate.

10. www.hostinger.co.uk › tutorials › what-is-phpWhat Is PHP? Learning All About the Scripting Language

    www.hostinger.co.uk › tutorials › what-is-php

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    Mar 1, 2024 · 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.