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1. • • (d+) - this will match one or more digits (0-9) and the brackets will mean they are captured in such a way as they could be used after the parsing.
     Reference:

     php - What does this regular expression mean? /^obj(\d+)\-{0 ...

2. Top results related to what does d+ mean in php software

   • 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.

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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 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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     5/5

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3. People also ask

   Is D+ a regular expression?

   • That is a regular expression to match the word Chapter followed by space, then one or more digits (\d+) (these first digits are captured to $1 I don't know if you are using $1 or ignoring it). After that it matches a dot \., then it is allowed but not required to have digits after the dot \d*

   What does \d in Javascript regex do? - Stack Overflow

   stackoverflow.com/questions/4541133/what-does-d-in-javascript-regex-do

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   What is PHP used for?

   • In fact, PHP is used by nearly 80% of all web applications, powering millions of websites and web servers worldwide. With PHP, developers can create dynamic web pages, process user input, build content management systems, and even integrate with other web services.

   PHP Explained: A Comprehensive Guide To What Is PHP - HostAdvice

   hostadvice.com/blog/web-hosting/php/what-is-php/

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   What does %D & %S mean in a function call?

   • Those are placeholders for the variables that follow. %d means treat it as a number. %s means treat it as a string. The list of variables that follow in the function call are used in the order they show up in the preceding string. printf is a "classic" function that have been around for a while and are implemented in many programming languages.

   What does the syntax '%s' and '%d' mean as shorthand for calling a

   stackoverflow.com/questions/6865673/what-does-the-syntax-s-and-d-mean-as-shorthand-for-calling-a-variable

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   What is the difference between HTML & PHP?

   • PHP and HTML are both used for web development, but they serve different purposes. HTML is a markup language used to create the structure and content of a web page. PHP is a server-side scripting language used to create dynamic web pages that can interact with databases, process user input, and generate custom content based on the user’s actions.

   PHP Explained: A Comprehensive Guide To What Is PHP - HostAdvice

   hostadvice.com/blog/web-hosting/php/what-is-php/

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4. stackoverflow.com › questions › 3178578php - What does this regular expression mean? /^obj(\d+)\-{0 ...

   stackoverflow.com › questions › 3178578

   • Cached

   Jul 9, 2011 · ^obj(\d+)-{0,1} means that the string is the start of a line and begins with obj, followed by a number of at least 1 digit, then there might be a -sign. (|mi\d{0,1}|critical|questionText|answerText-{0,1}\d+) means that the text is one of the following: nothing; mi which might be followed by a digit; critical; questionText

   Code sample

   critical

   |

   questionText

   |

   answerText...

   See more on stackoverflow

5. www.youtube.com › watchPHP : What does \d+ mean in regular expression terms? - YouTube

   www.youtube.com › watch

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   PHP : What does \d+ mean in regular expression terms?To Access My Live Chat Page, On Google, Search for "hows tech developer connect"As promised, I'm going t...

6. itecnotes.com › tecnote › php-what-does-d-mean-inPhp – What does \d+ mean in regular expression terms

   itecnotes.com › tecnote › php-what-does-d-mean-in

   • Cached

   So, \d+ is 1 or more digits. This is about as simple as regular expressions get. You should try reading up on regular expressions a little bit more. Google has a lot of results for regular expression tutorial, for instance.

7. hostadvice.com › blog › web-hostingPHP Explained: A Comprehensive Guide To What Is PHP - HostAdvice

   hostadvice.com › blog › web-hosting

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   Python is known for its simplicity and readability, and it is often used for scientific computing, artificial intelligence, and machine learning. However, PHP has a more established presence in web development, and it offers a wider range of tools and frameworks specifically designed for web development. 2. Ruby.

8. www.hackerrank.com › blog › what-is-php-programmingWhat is PHP? A Comprehensive Guide - HackerRank Blog

   www.hackerrank.com › blog › what-is-php-programming

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   Jul 6, 2023 · Understanding PHP: The Basics. PHP, short for Hypertext Preprocessor (though it originally stood for Personal Home Page), is an open-source server-side scripting language. It’s designed to create dynamic web pages and applications.

9. www.wedowebapps.com › what-is-phpExploring PHP: A Comprehensive Guide to the Scripting Language

   www.wedowebapps.com › what-is-php

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   Oct 20, 2023 · PHP is a server-side scripting that is read on the server while JavaScript is essentially a client-side script interpreted by the browsers. PHP scripts as well as Javascript are also embedded within HTML pages. Scripting Language vs Programming Language PHP is a scripting software that is among the many programming and side scripting languages.

10. www.php.net › manual › enPHP: General Information - Manual

    www.php.net › manual › en

    • Cached

    What is PHP? From the preface of the manual : PHP is an HTML-embedded scripting language. Much of its syntax is borrowed from C, Java and Perl with a couple of unique PHP-specific features thrown in. The goal of the language is to allow web developers to write dynamically generated pages quickly. What does PHP stand for?