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

   • What does "=>" mean in PHP?

     Top Answer

     Answered Jan 20, 2015 · 135 votes

     => is the separator for associative arrays. In the context of that foreach loop, it assigns the key of the array to $user and the value to $pass.

     Example:

     $user_list = array( 'dave' => 'apassword', 'steve' => 'secr3t');foreach ($user_list as $user => $pass) { echo "{$user}'s pass is: {$pass}\n";}// Prints: // "dave's pass is: apassword"// "steve's pass is: secr3t"

     Note that this can be used for numerically indexed arrays too.

     Example:

     $foo = array('car', 'truck', 'van', 'bike', 'rickshaw');foreach ($foo as $i => $type) { echo "{$i}: {$type}\n";}// prints:// 0: car// 1: truck// 2: van// 3: bike// 4: rickshaw

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     1/5

   • 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

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     2/5

   • 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

     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 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

     5/5

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2. www.reddit.com › r › multiplemyelomaToday is D+9. Yesterday was the worst. I felt terrible ...

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   Today is D+9. Yesterday was the worst. I felt terrible. Started wearing a diaper. Feeling hopeless. Then tonight, I got some sleep. In 1 to 2 hr increments but it was real sleep. I felt good this morning. My WBC went up, and my monocytes are increasing. Plus, I dont feel miserable. I am on the m Share Add a Comment

3. kinsta.com › knowledgebase › what-is-laravelThe Laravel PHP Framework – Web App Construction for Everyone

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   Apr 30, 2024 · Laravel is a PHP framework and uses a scripting language rather than being a strict PHP programming language. While scripting languages and programming languages are related, they have several noticeable differences, primarily in ease of use and speed of execution. Scripting languages are platform-specific, interpreted languages.

   • Video Duration: 16 min

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5. www.geeksforgeeks.org › php-exercises-practicePHP Exercises, Practice Questions and Solutions - GeeksforGeeks

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8. codetofun.com › php › number-patternPHP Number Pattern Programs | CodeToFun - Wikimass

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