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1. Top results related to what does d+ mean in php programming language compiler or interpreter

   • What does this mean in PHP: -> or =>

     Top Answer

     Answered May 30, 2017 · 408 votes

     The double arrow operator, =>, is used as an access mechanism for arrays. This means that what is on the left side of it will have a corresponding value of what is on the right side of it in array context. This can be used to set values of any acceptable type into a corresponding index of an array. The index can be associative (string based) or numeric.

     $myArray = array( 0 => 'Big', 1 => 'Small', 2 => 'Up', 3 => 'Down');

     The object operator, ->, is used in object scope to access methods and properties of an object. It’s meaning is to say that what is on the right of the operator is a member of the object instantiated into the variable on the left side of the operator. Instantiated is the key term here.

     // Create a new instance of MyObject into $obj$obj = new MyObject();// Set a property in the $obj object called thisProperty$obj->thisProperty = 'Fred';// Call a method of the $obj object named getProperty$obj->getProperty();

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     1/5

   • What does %S mean in PHP, HTML or XML?

     Top Answer

     Answered Feb 03, 2013 · 62 votes

     with printf or sprintf characters preceded by the % sign are placeholders (or tokens). They will be replaced by a variable passed as an argument.

     Example:

     $str1 = 'best';$str2 = 'world';-$say = sprintf('Tivie is the %s in the %s!', $str1, $str2);echo $say;

     This will output:

     Tivie is the best in the world!

     Note: There are more placeholders (%s for string, %d for dec number, etc...)

     Order:

     The order in which you pass the arguments counts. If you switch $str1 with $str2 as

     $say = sprintf('Tivie is the %s in the %s!', $str2, $str1); -

     it will print

     "Tivie is the world in the best!"

     You can, however, change the reading order of arguments like this:

     $say = sprintf('Tivie is the %2$s in the %1$s!', $str2, $str1);-

     which will print the sentence correctly.

     Also, keep in mind that PHP is a dynamic language and does not require (or support) explicit type definition. That means it juggles variable types as needed. In sprint it means that if you pass a "string" as argument for a number placeholder (%d), that string will be converted to a number (int, float...) which can have strange results. Here's an example:

     $onevar = 2;$anothervar = 'pocket';$say = sprintf('I have %d chocolate(s) in my %d.', $onevar, $anothervar);echo $say;

     this will print

     I have 2 chocolate(s) in my 0.

     More reading at PHPdocs

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     2/5

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

     Top Answer

     Answered Oct 18, 2022 · 227 votes

     A syntax such as $$variable

     is called Variable Variable.

     For example, if you consider this portion of code:

     $real_variable = 'test';$name = 'real_variable';echo $$name;

     You will get the following output:

     test-

     Here:

     • $real_variable contains 'test'
     • $name contains the name of your variable: 'real_variable'
     • $$name mean "the variable thas has its name contained in $name" Which is $real_variable
     • And has the value 'test'

     EDIT after @Jhonny's comment:

     Doing a $$$? Well, the best way to know is to try ;-)

     So, let's try this portion of code:

     $real_variable = 'test';$name = 'real_variable';$name_of_name = 'name';echo $name_of_name . '<br />';echo $$name_of_name . '<br />';echo $$$name_of_name . '<br />';

     And here's the output I get:

     namereal_variabletest

     So, I would say that, yes, you can do $$$

     ;-)

     Other Answers

     Answered Apr 26, 2010 · 25 votes

     The inner $ resolves the a variable to a string, and the outer one resolves a variable by that string.

     So, consider this example

     $inner = "foo";$outer = "inner";-

     The variable:

     $$outer-

     would equal the string "foo"

     Other Answers

     Answered Apr 26, 2010 · 14 votes

     It's a variable's variable.

     <?php$a = 'hello';$$a = 'world'; // now makes $hello a variable that holds 'world'echo "$a ${$a}"; // "hello world"echo "$a $hello"; // "hello world"?>

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     3/5

   • 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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     4/5

   • 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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     5/5

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2. stackoverflow.com › questions › 1514676Is PHP compiled or interpreted? - Stack Overflow

   stackoverflow.com › questions › 1514676

   • Cached

   Oct 3, 2009 · It's the difference between these two: - JIT ("Just in time"), where only the code that is needed is compiled when it's needed (note, however, that after the interpreter quits, the compiled code is lot) - AOT ("Ahead of time"), where the all the code is compiled before it is run.

3. www.php-compiler.net › php-interpreter-or-compilerPHP Interpreter or Compiler: Ultimate Guide

   www.php-compiler.net › php-interpreter-or-compiler

   • Cached

   Apr 17, 2023 · Mastering PHP: A Guide to PHP Interpreters and Compilers. Blog Schaefer Robert April 17, 2023. PHP stands among the prime languages employed in crafting sophisticated web applications. It is an interpreted language, meaning that PHP applications are not pre-compiled. Instead, they are translated into machine code at runtime, on-the-fly.

4. People also ask

   How does PHP interpreting work?

   • The interpreting process should start with the browser when the user loads the web page or open any site that interacts with the PHP server. The client sent a request from the web server during the previous process. The web server takes this source code and interprets the source code line by line. then it responds with the result.

   What is PHP and How PHP Interpreter Works - DEV Community

   dev.to/patricia1988hernandez2/what-is-php-and-how-php-interpreter-works-38k8

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   What is a PHP interpreter?

   • The interpreter is used in high-level programming and scripting languages like JavaScript, PHP, Python and Ruby. The name of the PHP interpreter is Zend Engine developed by the Zend company for software. The Zend Engine is already inside the PHP package so when you install PHP it will install Zend Engine directly at the same time.

   What is PHP and How PHP Interpreter Works - DEV Community

   dev.to/patricia1988hernandez2/what-is-php-and-how-php-interpreter-works-38k8

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   Is PHP interpreter faster than compiler?

   • The interpreter is slower than the compiler but it is faster in the source code analysis. The interpreter is used in high-level programming and scripting languages like JavaScript, PHP, Python and Ruby. The name of the PHP interpreter is Zend Engine developed by the Zend company for software.

   What is PHP and How PHP Interpreter Works - DEV Community

   dev.to/patricia1988hernandez2/what-is-php-and-how-php-interpreter-works-38k8

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   Is PHP a binary or a compiled language?

   • The PHP is an interpreted language. The binary that interprets PHP is compiled, but the code you write is interpreted. Check the wiki page on PHP

   php as interpreter language or compiled - Stack Overflow

   stackoverflow.com/questions/6610853/php-as-interpreter-language-or-compiled

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5. dev.to › patricia1988hernandez2 › what-is-php-andWhat is PHP and How PHP Interpreter Works - DEV Community

   dev.to › patricia1988hernandez2 › what-is-php-and

   • Cached

   • An Inroduction
   • How Php Works
   • Understanding The Diffrence Between The Compiler and The Interpreter
   • How Php Interpreter Works
   • What Is The Ast
   • Conclusion

   Actually, PHP is designed by Rasmus Lerdorf in 1994 and written in C programming language, starting with the name PHP/FI as the first scripting language on the planet for web development. PHP started as a common gateway interface binaries.it has already been created to follow the visitors for their resumes on the internet.

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   The interpreting process should start with the browser when the user loads the web page or open any site that interacts with the PHP server. The client sent a request from the web server during the previous process. The web server takes this source code and interprets the source code line by line. then it responds with the result. But how does the ...

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   Two both compiler and interpreter are helping us to translate the source code of the high-level programming language into machine code but there are many factors are distinguish one from the other. Let's see that. The compilertranslates the source code into machine code in one piece, so when you run the program the compiler is taking the full sourc...

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   The name of the PHP interpreter is Zend Engine developed by the Zend company for software. The Zend Engine is already inside the PHP package so when you install PHP it will install Zend Engine directly at the same time. Actually, there are four stages in the Zend Engine interpreter to interpret PHP source code. 1 - Tokenizing Or Lexical Analysis It...

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   AST stands for Abstract Syntax Tree used in the parser of the interpreter. The mission of the AST is to take the syntax of the source code and converts it into a structure tree. The main advantage of AST is the validating and parsing of every part in the implementation. Let's see how the abstract syntax tree represents the below PHP code.

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   In this tutorial, we explained what is PHP, and how the Zend Engine works. Also, we exposed what is the difference between the compiler and the interpreter. Thank you for reading

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6. infinitydomainhosting.com › kb › how-php-interpreterHow PHP Interpreter Works: Simplified For Beginners

   infinitydomainhosting.com › kb › how-php-interpreter

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   Dec 4, 2023 · Here is a step-by-step overview of how the PHP interpreter works: 1. Parsing: The PHP interpreter first parses the PHP code to analyze its structure and syntax. During parsing, the interpreter checks for errors and issues related to code syntax and structure. If any errors are found, the interpreter reports them back to the server.

7. dev.to › mrsth › compiler-vs-interpreterCompiler vs Interpreter: Understanding the Differences

   dev.to › mrsth › compiler-vs-interpreter

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   Aug 23, 2023 · A compiler reads in source code and creates an executable program. The user can run the program independently from the compiler. An Interpreter reads the source code and executes the code line by line. No executable is created, and every execution always needs the interpreter.

8. 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 · I used the boolean values true and false here, but in practice you’ll use expressions that evaluate to either true or false, for example: 1 > 2 || 2 > 1; //true 1 !== 2 && 2 > 2; //false. All of the operators listed above are binary, meaning they involve 2 operands. PHP also has 2 unary operators: ++ and --:

9. 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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   Aug 30, 2021 · The PHP Programming Language Meaning Explained. Kolade Chris. 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). In this article, I will help you explore the world of PHP so you ...