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1. Top results related to what does d+ mean in php programming language example

   • 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 ":" 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

     2/5

   • 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

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     3/5

   • 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

     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

   • Cached

   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."));

   See more on stackoverflow

3. www.php.engineer › operatorsOperators - Modern PHP Tutorial

   www.php.engineer › operators

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   A logical operator in PHP is an operator that performs a logical operation on two or more values and returns a boolean value (true or false). The most common logical operators in PHP are &&, ||, and !. Logical operators are useful in PHP because they allow us to make decisions based on multiple conditions, which is an essential part of programming.

4. People also ask

   What is the difference between == and === in PHP?

   • Since their data types are different, PHP has determined that they don't match. The == (equal to) operator and the === (identical) operator are used to compare values in PHP. The difference between the two is that the == operator performs a loose comparison, while the === operator performs a strict comparison.

   Operators - Modern PHP Tutorial

   www.php.engineer/operators

   See all results for this question

   What does $$ mean in PHP?

   • What does $$ (dollar dollar or double dollar) mean in PHP? What does $$ mean? It's a name-based de-reference. Something like ${$link} in Bash A syntax such as $$variable is called Variable Variable. Doing a $$$? While I agree that it can be useful, most of the times it's better to use arrays anyway. – o0'.

   What does $$ (dollar dollar or double dollar) mean in PHP?

   stackoverflow.com/questions/2715654/what-does-dollar-dollar-or-double-dollar-mean-in-php

   See all results for this question

   What are operators in PHP?

   • In PHP, operators are symbols that perform operations on one or more values (also known as operands) and return a result. There are several different types of operators in PHP, including: Arithmetic operators: perform basic arithmetic operations. Assignment operators: assign a value to a variable, such as the simple assignment operator.

   Operators - Modern PHP Tutorial

   www.php.engineer/operators

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   Which operator should be used when performing comparisons in PHP?

   • In general, it's recommended to use the === operator over the == operator when performing comparisons in PHP, as it provides a more secure and accurate comparison. The not identical to operator ( !==) returns true if the values are not equal or not of the same type and false otherwise.

   Operators - Modern PHP Tutorial

   www.php.engineer/operators

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5. 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 ...

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6. www.freecodecamp.org › news › the-best-php-examplesThe Best PHP Examples - freeCodeCamp.org

   www.freecodecamp.org › news › the-best-php-examples

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   Dec 1, 2019 · If you want to learn PHP, a popular server-side scripting language for web development, you can find the best PHP examples on freeCodeCamp.org. This article covers the basics of PHP syntax, variables, operators, loops, functions, arrays, and more. You can also learn how to create a simple HTML and PHP form that collects and processes user input.

7. devlateral.com › guides › phpWhat are dollar sign variables in PHP? | Dev Lateral

   devlateral.com › guides › php

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   Taking inspiration from Perl, which PHP had a lot of similarities to back in the early days of the programming language, used symbols (Sigil's) to show variables and their scope. The below example shows we have a variable called foo, where the dollar sign ($) is the sigil and foo is the variable name, which has a scalar data type (bool, int ...

8. 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.

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

   www.php.net › manual › en

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   What is PHP? 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? An example: