The Answer begins in the upper left corner and ends in the lower right corner. For example, you have some variable names but you arent sure if any of them has been defined already. Stack Overflow for Teams is moving to its own domain! What Are Backslashes (\) And How Do You Use Them? This is important to remember because sentences that askindirect questions typically use a period instead of a question mark. see test suite here: https://3v4l.org/6XMc4. How to remove question mark from corrplot in R? yes, "nothing" will happen because that won't even compile. What is an idiom about a stubborn person/opinion that uses the word "die"? colou?r matches both colour and color. In PHP 7, the double question mark (??) The second operand is the expression to be executed if the first expression returns a true value. What does these operators mean (** , ^ , %, //) ? Referring to the syntax example above, expression2 will execute if expression1 will return true. sorry if this isn't allowed, i'm new to this sub and new to poshmark (expanding from depop) but i just have one small question. The following example shows the conditions of the falsy value. It is part of the ternary operator if used in a script. You may also see it in a url in which case it is a separator between the url and variables. An Historic vs. A Historic: Which One Is Correct? Moreover, no warning will be thrown when the value of the variable isnt set or the given condition isnt true. The answer to this question is its safe if youre using PHP version 5.4 or above. The difference between the PHP question mark and PHP double question mark is that the PHP question mark is a ternary operator and a nice alternative to the if-else statements. The question mark is supposed to mark the start of the portion of a GET request where you can pass it variables You can see that it switches between the expressions similar to the if-else blocks. Can I administer an English exam? WebThe second operand is the expression to be executed if the first expression returns a true value. For example. The question mark makes the preceding token in the regular expression optional. operator. Modified 1 year, 10 months ago. Type declarations for parameters and return values can now be marked as nullable by prefixing the type name with a question mark. Asking for help, clarification, or responding to other answers. Heres how. How do you feel about open-ended questions? Here is the coding representation that shows the above scenario and the usage of the double question mark operator in PHP: You will get the The value isnt set yet! when the page is loaded for the first time. What language is native to you? The question mark has several purposes. The most common are probably the beginning and end tags for PHP inside HTML It marks the start of a query string,which can be accessed with GET. Unix to verify file has no content and empty lines, BASH: can grep on command line, but not in script, Safari on iPad occasionally doesn't recognize ASP.NET postback links, anchor tag not working in safari (ios) for iPhone/iPod Touch/iPad, Kafkaconsumer is not safe for multi-threading access, destroy data in primefaces dialog after close from master page, Jest has detected the following 1 open handle potentially keeping Jest from exiting, php - Meaning of question mark colon operator. Heres how. How old are you? It is used in Spanish to ask a question. What Does Double Question Mark in PHP Do? First, the variable $age is evaluated if greater than or equal 18. The question mark serves several roles. Given that this is a bitwise The PHP double question mark is referred to as the null coalescing operator that checks if the values of the variables are set or a particular condition is true. What does 3 question marks mean in a text message? A question mark resembles a hooked line with a dot underneath (?). I will do it through a link in the below example. So, you should either print a statement to inform that none of the given variables are defined or add another defined variable. : Solved, Zsh: Command Not Found: Pip: Debug the Error by Proving the Path, Zsh: Command Not Found: Brew: This Is How You Can Debug the Error, Error: Error:0308010C:Digital Envelope Routines::Unsupported: Debugged, PHP Die: How To Stop Your Script From Executing Further, PHP Parsing URL: Break Down URL To Get Its Components, The PHP double question mark operator is an alternative to the isset() function used with the if-else statements, The PHP double question mark operator is also an alternative to the if statement when working with conditions, The PHP question mark operator combined with a colon makes a ternary operator, The ternary operator is an alternative to the if-else statements, You can use the PHP double question mark and PHP question mark multiple times in a single line of code. PHP 7 has added a new operator double question mark (??) Thanks for writing. thanks in advance! It is because the shorter your code, the more the readability, and the more time saved. rev2022.11.16.43035. Why am I getting some extra, weird characters when making a file from grep output? operator is called the ternary operator or conditional ternary operator. While the syntax is pretty straight forward, describing the JavaScript question mark ? I have seen this code in https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Console/Output/Output.php line number 40 they are using ?int. before type declaration means in php (?int) [duplicate]. Questions get their own special symbol: the question mark. However, if a question ends with an abbreviation, you would place a question mark after the period. WebFor your convenience, one of the fastest ways to calculate the outputted value from a bitwise shift is to multiply or divide by 2. What does createdCollectionAutomatically mean in MongoDB? This article will go in-depth into the ternary operator in PHP. The example below will evaluate the true expression and execute the code block accordingly. Exclamation point: In formal writing, a sentence will end with either a question mark or an exclamation point and not both. Rewiring fluorescent fixture for LED bulbs, safest way to arrange the wires? i suppose it isn't very important but i would just like to know haha. How to dare to whistle or to hum in public? Are softmax outputs of classifiers true probabilities? What does the Star operator mean in Python? Broken docs, Laravel queue worker can't process jobs # Error log local.ERROR: Class does not exist {"exception":"[object] (ReflectionException(code, Shrinkwrap modifier leaving small gaps when applied. For example echo 50 >> 4;. What is an idiom about a stubborn person/opinion that uses the word "die"? This is usually done through an html link or button. So it's not a function syntax. ? Operator With Condition, // using the double question mark with a condition. Next, we invoked the canVote() function with the value of 21 as the parameter, which is a legal age of voting. For instance, you have created a form in your program. How difficult would it be to reverse engineer a device whose function is based on unknown physics? What Does a Question Mark Mean? Another downside of the ternary operator is that it is hard to debug the code as we cannot place breakpoints in the subexpressions. If expression1 evaluates false, then expression3 will execute. What does question mark mean? It returns its first operand if it exists and is not NULL; otherwise, it returns its second operand. It has many names: question mark, question colon, ternary operator. Some puzzles indicate that a clue is part of the theme by placing a question mark or asterisk after the clue; others show no mercy. Save my name, email, and website in this browser for the next time I comment. A question mark is used to indicate that a sentence is a question. Is atmospheric nitrogen chemically necessary for life? In such a scenario, youll use the ? ? PHP double question mark operator. It depends in what context you are talking about. For example in this case: HTML goes here <?php //php code goes here ?> HTML goes here The ? Connect and share knowledge within a single location that is structured and easy to search. echo $v1 ?? Would drinking normal saline help with hydration? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Is `0.0.0.0/1` a valid IP address? The ternary operator will execute the third expression when these values are evaluated. The length of the string isnt 15.; PHP Question Mark Versus PHP Double Question Mark. $v2 ?? question mark definition: 1. the symbol ? Making statements based on opinion; back them up with references or personal experience. A diamond (or square) with a question mark in the middle is not an emoticon, but a "replacement character." Can a trans man get an abortion in Texas where a woman can't? Although the stated task can be achieved by using only the double question mark as well, here is the code snippet that uses both the operators: You can use the PHP double question mark more than one time in a single line of code. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. They are not same,!= is a not standard (ISO) comparision operator; and its use should be discouraged. ? in a Single Line? Question marks are used to indicate that a sentence is a question. Quotation marks: If a question ends with a quote that is not a question itself, place the question mark outside the quotation marks: Place the question mark inside the quotation marks if the quote itself is a question, but the sentence is not: If both the sentence and the quote are questions, the question mark goes inside the quotation marks. Typically, a question mark is placed immediately after the last letter of the last word of a sentence. These polite requests are actually imperative sentences disguised as questions. Why the difference between double and electric bass fingering? Hence, the third expression, you cannot vote, will be displayed. How can a retail investor check whether a cryptocurrency exchange is safe to use? Why do many officials in Russia and Ukraine often prefer to speak of "the Russian Federation" rather than more simply "Russia"? Cannot Or Can Not: Is There A Difference? Usually, the comparison argument. What Are Question Marks (?) Emoji Meaning Tag Question Mark was approved as part of Unicode 3.1 in White Question Mark. What does ? For instance, you want to check if a condition is true or false. The double question marks (??) You can read this variable from PHP code like this: More information here: http://php.net/manual/en/reserved.variables.get.php. A question mark symbol ? PHP 5.4 was introduced in 2015 so it should be safe to assume that most hosts/environments will be using it, but its always wise to double check if you think your code maybe hosted somewhere that uses a lower version. separates the expression to be evaluated from the rest of the expressions. Please have a look at the code to compare both of the given operators: Surprisingly, you can use both of the given operators in a single line of code and let your program control hop from one expression to another until the final result is reached. operator known as Null Coalescing Operator. Imperative sentences use periods and not question marks. Maybe its some sort of comment like # ;p Learn more. How do we know "is" is a verb in "Kolkata is a big city"? Calculate difference between dates in hours with closest conditioned rows per group in R. Can we prosecute a person who confesses but there is no hard evidence? Along with this, you want to only check if a particular condition is true. PHP 5.4 was introduced in 2015 so it should be safe to assume that most :) means a property is optional.That said, a property can either have a value based on the type defined or its value can be undefined.. We can use the ternary operator to substitute for if-else constructs to shorten the codes length and improve the readability. The PHP double question mark evaluates the expression on the right side and if it doesnt return true, it jumps to the left side. We make use of First and third party cookies to improve our user experience. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Period: When ending a sentence, you would use either a period or a question mark and not both. Stack Overflow for Teams is moving to its own domain! For instance, if the expression returns a null value, Nan, 0 or the empty value, the expression will return a false value. expression2. The value of num is 5 : The value of num isnt 5; echo $num * 5 == 25 ?? Therefore, youll define the condition and add the PHP double question mark operator in front of it. Which defines ?int as either int or null. In everyday life, we often ask and write many questions. When Should You Capitalize Dad, Mom, And Other Family Titles? You dont want to perform any action if the condition is false. However, you cant skip writing the left-side value in the statement. When we write a sentence, we use punctuation to signal that what we are saying is a question. What does .php question mark = mean? Similar to using two types where one type is undefined. However, it does not provide sufficient information to determine just how questiony the sentence is. Null Coalescing operator also can be used in a chain format. echo $myArray[key2] ?? What does the Double Star operator mean in Python? Coding Example of Using ? You can add biometric authentication to your webpage. Webassert() is a language construct in PHP 7. :) is to define two types to a property where , // using the double question mark operator. How difficult would it be to reverse engineer a device whose function is based on unknown physics? Why does my Mac Show a file with a question mark? You dont need a second question mark outside of the quotation marks to end the sentence: Confused about punctuation? The stated feature of the double question mark operator lets you check if any one of the given variables is set. The statement before the question mark is evaluated to be either true or false, and then if true the statement before the colon is executed, and if false the statement after the colon is executed. Next, use the ternary operator where the $ran_num variable is the expression to be evaluated. There are other cases when the evaluation to be expressed will return a false value. Why do paratroopers not get sucked out of their aircraft when the bay door opens? Choisissez votre disque de dmarrage prfr dans les prfrences. How to control Windows 10 via Linux terminal? The value of num isnt 5; How to Use ? and ? So, youll add all the values separated by the ? For example. Naomi, No difference, all 3 variations are the same . By using this website, you agree with our Cookies Policy. This writing tool uses machine learning technology uniquely designed to catch grammar and spelling errors. Greek question mark. In addition, a colon symbol, :, is used to separate the second and the third operands. It keeps the expression to be checked on the right side and the remaining part on the left side. are also called nullish coalescing operators and they allow to use of a default value set on the right side of the operator in case the initial value from the left side of the operator is null or undefined. Your silly example, which would never be part of actual code, arguably doesn't return the result you say it does. A question mark replaces a period at the end of a sentence when the sentence is a question. $v5 ?? You can't use such a syntax in your own function. If so, what does it indicate? Next, youll specify any value such as a string at the end of the statement as shown below. In PHP, The question mark ? WebThe question mark represents a nullable type: Type declarations for parameters and return values can now be marked as nullable by prefixing the type name with a question mark. Position Is Everything: Your Go-To Resource for Learn & Build: CSS,JavaScript,HTML,PHP,C++ and MYSQL. where exactly are they sharing them to, and why? Value is null ? The answer to this question is its safe if youre using PHP version 5.4 or above. How many concentration saving throws does a spellcaster moving through Spike Growth need to make? How was Claim 5 in "A non-linear generalisation of the LoomisWhitney inequality and applications" thought up? Find centralized, trusted content and collaborate around the technologies you use most. The expression uses the rand(0,10) function and compares if it is greater than 5. @DavidThomas is it really related? "Notice: Undefined variable", "Notice: Undefined index", "Warning: Undefined array key", and "Notice: Undefined offset" using PHP. We can use it to write the simpler conditional expressions. Why shouldn't I use mysql_* functions in PHP? Add the value on Key2 : Key2 is set already; Coding Example of Using ? When I see .php?=. operator mean in PHP, What does question mark () before type declaration means in php (int) - PHP, php - Meaning of question mark colon operator - PHP. For example, you have an associative array. https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Console/Output/Output.php, php.net/manual/en/migration71.new-features.php, http://php.net/manual/en/migration71.new-features.php. Suppose you want to produce results based on a condition. Then, write heads for the second expression and tails for the third. It keeps the expression to What makes this symbol so special? To make things simpler, lets look at an example. Symfony: Datetime form type with rfc 3339 string input, Symfony Security logout not clearing RememberMe token, How do you use RedisSessionHandler in Symfony 4? How much wood could a woodchuck chuck if a woodchuck could chuck wood? 12: Scope Resolution Operators in OOP PHP | Object Oriented PHP Tutorial | PHP Tutorial | mmtuts, PHP : What does double question mark (??) One common case of this is having words which have some common idiomatic meaning together instead be taken literally. (true == true ? All that you require is to get one if the condition is true. 11 Synonyms For Random And Even More Random Words! It evaluates from left to right. $v3 ?? Comma: A question mark replaces a comma if used in a quote. In informal writing, people will often use a question mark and exclamation point (or several) together. suppose I have file1.php open and in it, I want to create a statement, which passes values to another page, file2.php. Ref: http://php.net/manual/en/migration71.new-features.php, Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Staff www.solving-math-problems.com Get the Last Day of the Month With PHP Functions, Create a PHP Function With Multiple Returns, Properly Format a Number With Leading Zeros in PHP, Determine the First and Last Iteration in a Foreach Loop in PHP, Create a Folder if It Doesn't Exist in PHP, Calculate the Difference Between Two Dates Using PHP. Upside-down Question Mark by: Staff The question: what does an upside-down question mark mean in algebra The answer: I am not aware that the upside-down question mark is used for any type of algebraic symbol. : PHP question mark with a colon making a ternary operator. So, you can do the same work with a one-liner code snippet using the given operator instead of writing four to six lines of code. It returns its To subscribe to this RSS feed, copy and paste this URL into your RSS reader. :D, @geoidesic omg you killed me with that one lmao, Well, languages like C# or Java when asking for an object, allows to pass null, so you can get null pointer exceptions easily unless you verify every parameter on every function manually because they are passing a, @MrTo-Kane nullable type is introduced in PHP 7.1, What does question mark (?) You can add biometric authentication to your webpage. How friendly is immigration at PIT airport? You will find even more interesting facts about the null coalescing operator and study the question mark operator in this article. Lets find our answers right now and make sure that question marks dont leave us scratching our heads. Next, you want to perform print a statement to set the value of the array if it doesnt exist. Appreciate Yourself And Others More With 22 Words Of Affirmation For 2022. In that case, youll write all the variable names separated by double question marks and add an appropriate message as the last option. For example, create a variable $ran_num and assign it to an expression. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, It means it should be an int but can also be null, The issue that php 7.2 does not support this, @MaxChernopolsky Could you please provide a reference of your claim ", So it's a weakly typed strong type? How to license open source software with a closed source component? None of the variables is set.; Can You Use PHP Question Mark Operator Repeatedly? mean in C#? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why Capitalizing Native American Matters, 20 Positive Adjectives To Brighten Your Writing, This List Of 100+ Adjectives By Type Is All You Need, Explore The Many Meanings Of Family With These Quotes, 12 Motivational Quotes From Sports Figures. $v3 ?? Do we really use it at the end of every question? $v4 ?? If you didn't understand anything, try forgetting every worry you have and now read the answer again. hi all! Rhetorical questions, which dont actually expect an answer, also use question marks: Sometimes, polite requests may end in a period instead of a question mark even if they are asking a question. operator known as Null Coalescing Operator. A question mark by another name [The] question mark or conditional operator in JavaScript is a ternary operator that has three operands. : Together, // using question mark and double question mark. How did knights who required glasses to see survive on the battlefield? Here, the program control will stop jumping through the values once it reaches the first value that is anything but not zero, false, or null. Now, you want to check if a particular key is set in the array. What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet? I will catch the same in file2.php using the following statement in file2.php: P.S. Login . The third expression will be evaluated if the first expression returns a false value. Now, you want your program to return the first-found value that isnt zero, false, or null. How can a retail investor check whether a cryptocurrency exchange is safe to use? Here is how you can use PHP double question mark multiple times: You can use the PHP question mark operator repeatedly in a single line of code with different kinds of values similar to the double question mark. Questions mark is part of the ternary operator ? A The question mark is called a quantifier. echo "this is true" : "this is false"). operator. M<-matrix(sample(c(NA,2,5,3),16,replace=TRUE),ncol=4) M_corr<-cor(M) M_corr Output. Information and translations of question mark in the most comprehensive dictionary definitions resource on the web. In the other case, the stated operator will produce nothing. It is displayed whenever a character is not recognized in a document or webpage. tikz matrix: width of a column used as spacer, Sci-fi youth novel with a young female protagonist who is watching over the development of another planet. If you execute all the above given snippets as a single program, it generates the following Output function nullOrInt will accept both null and int. In file1.php, I will include some code that does that: This creates a "Link name" hyperlink that, when clicked, passes values by "GET" function into "edit.php". php.net/manual/en/reserved.variables.get.php, http://php.net/manual/en/reserved.variables.get.php. operator mean in PHP, PHP syntax question What does the question mark and colon mean - PHP, How to PHP : What does double question mark (??) GeeksForGeeks. What does Ethereum merge mean for NFTs. [Solved] What do two colons (::) mean in PHP? What is the purpose of the question marks before type declaration in PHP7 (?string or ?int)? Le point d'interrogation apparat brivement avant le dmarrage de votre Mac. This is variable passed from URL to script. The statement before the question mark is evaluated to be either true or false, and then if true the statement before the colon is executed, and if false the statement after : ternary operator. The other two are the period and the exclamation point. What does the two question marks together (??) Speeding software innovation with low-code/no-code tools. You are all also very very funny. You don't understand the ? on php. Not the answer you're looking for? Sometimes, question marks are known as interrogation points. On Key2: Key2 is set already ; Coding example of using? as. It 's known as the ternary operator is that it is because the encoding Second operand is the expression to be checked on the battlefield a particular is! Student in my class defines? int knowledge within a single question mark defined! Last option the conditions of the statement as shown below sentence is separator On your browser it in a document or webpage test suite here http! Result you say it does not provide sufficient information to determine just how questiony the sentence is a! It to an expression on writing great answers unknown physics defined already case of this is having Words have! Me a rationale for working in academia in developing countries check if a question mark //javascript.plainenglish.io/what-does-the-question-mark-mean-in-javascript-code-353cfadcf760 '' > question and. Left unchanged the symbol values are evaluated about a stubborn person/opinion that uses the rand ( 0,10 function. In formal writing, people will often use a question mark, question dont Used to separate the second is executed tagged, where developers & technologists share private knowledge with coworkers Reach To its own domain //www.thesaurus.com/e/grammar/question-mark/ '' > < /a > Stack Overflow for Teams is moving to its domain! Its use should be left unchanged and even more interesting facts about the null operator Num is 5: the question mark in a chain format part the. Alternative to this question is its safe if youre using commas, colons, or to. It through a link in the upper left corner and ends in the subexpressions forward, describing the JavaScript mark And compares if it exists and is not null ; otherwise, it returns what does question mark mean in php does error. Make Amiga executables, including Fortran support by a colon making a file from grep output lets check, dermal and inhalative their own special symbol: the behavior of the question mark or an exclamation: To set the value entered in the below example to demonstrate the double question mark in the other two the. Are known as the last option Random Words executed if the first expression returns a true value conditional operator Things simpler, lets look at an example stubborn person/opinion that uses the word `` die '' true value evaluation Stack Overflow < /a > Meaning of question mark outside of the question was. Technologists worldwide == `` M '' be left unchanged $ _POST [ txt ]?? ) or webpage, Are of people `` sharing '' my listings, similar to using two types where one type undefined Sucked out of their aircraft when the left side what does question mark mean in php is evaluated if greater than 5 with. Mark with a closed source component together instead be taken literally the double operator! For Random and even more interesting facts about the null coalescing operator also can be accessed get! The sentence is a verb in `` Kolkata is a question mark, question,! A link in the most comprehensive dictionary definitions resource on the web get. Is its safe if youre using commas, colons, or responding to other answers questions their! It switches between the expressions your name these will have the same. //Elpaso.Tibet.Org/App2/9391/What-Does-A-Folder-With-A-Question-Mark-Mean-On-A-Macbook '' > < /a > in PHP is the shortest possible alternative to the same variable language in! Them has been defined already our user experience url in which the Answer begins the! Also very very funny an example and compares if it is a different version of the double mark. You Capitalize Dad, Mom, and more from Thesaurus.com right in program! Example, there is only an else statement will happen because that wo n't even compile `` '' To complete your task punctuation to signal that What we are saying is a quotation makes '' https: //github.com/symfony/symfony/blob/master/src/Symfony/Component/Console/Output/Output.php line number 40 they are not same,! = is a language construct PHP To using two types where one type is undefined great answers something that is a.. Purposes and should be left unchanged assign it to write the simpler conditional.. What is question mark (? string or? int as either int or null could woodchuck About the null coalescing operator also can be used in Spanish to ask a question mark < /a Webassert! It keeps the expression to be executed if the first expression returns a value! The shortest possible alternative to the syntax example above, expression2 will execute the code what does question mark mean in php shown in the comprehensive. This article an else statement type declaration in PHP7 (?? ) Exchange is safe use! Them to, and the second operand a true value upper left corner and ends in the upper left and. Field to a property where < a href= '' https: //www.thesaurus.com/e/grammar/question-mark/ '' > /a. Asking for help, clarification, or responding to other answers it does from grep output Websockets Study the question mark (? int give me a rationale for working academia! Not get sucked out of their aircraft when the page is loaded the! Making a ternary operator any action if the first expression returns a false.! Ran_Num and assign it to write the simpler conditional expressions time saved character! Declarations for parameters and return values can now be marked as Nullable by the Third party cookies to improve our user experience out that the sentence is.! In Spanish to ask a question mark (?? ) when installing water gun Answer is a mark. Therefore, youll write all the variable $ ran_num and assign it to an.. Personal experience commas, colons, or responding to other answers PHP double question mark < /a > the question: CSS, JavaScript, html, PHP, the variable $ age is evaluated as true and An abbreviation, you want your program to return the result you say it does provided are For validation purposes and should what does question mark mean in php discouraged that ask questions: ) is a quotation makes As part of actual code, arguably does n't return the first-found value that isnt zero, false or. To ask a question constructs to shorten the codes length and improve the readability the period the! Letter of the last Mac in the obelisk form factor the $ ran_num assign! To think about using a question mark and not both both of will Last option or can not place breakpoints in the below example to the Grammar and spelling errors all the variable names separated by the '' > the Answer begins in statement! Produce results based on unknown physics as questions whistle or to hum in?. Is either null or undefined right now and make sure that question marks (? as. Academia in developing countries already defined, as it only takes three operands codes length and the! A student in my class hazard categories: Acute toxicity 4, oral dermal. And characters we use punctuation to signal that What we are saying is a language construct in PHP?. Some what does question mark mean in php, weird characters when making a file from grep output will either. Working in academia in developing countries will do it through a link in the other case, double. That ask questions entered in the input field to a variable $ ran_num variable is the expression to executed! Knowledge with coworkers, Reach developers & technologists worldwide determine just how questiony the sentence.. //Elpaso.Tibet.Org/App2/9391/What-Does-A-Folder-With-A-Question-Mark-Mean-On-A-Macbook '' > What does < /a > the double question mark Ethereum merge mean for NFTs '' What To toilet when installing water gun codes length and improve the readability, and more from Thesaurus.com in. Do ( classic ) experiments of Compton scattering involve bound electrons parameters and return values can now be as! Of using? int ) variable is the name of this battery type! Common idiomatic Meaning together instead be taken literally the code as we can use the ternary operator ) subscribe. ] What do two colons (:: ) mean in PHP 7, the question is! You have created a form in your what does question mark mean in php operators mean ( * * ^. Forum=Azurelogicapps '' > What does these operators mean ( * *,,: the question mark life, we often ask and write many.. Taken literally 5.4 or above point: in formal writing, a character not! Most comprehensive dictionary definitions resource on the right side and the more time saved to ask question Referring to the isset ( ) is also kind of empty variable names separated by?. //Www.Reddit.Com/R/Poshmark/Comments/Yww9E8/What_Exactly_Does_X_Shared_Your_Item_Mean/ '' > What does Ethereum merge mean for NFTs this writing tool uses learning Why the difference between double and electric bass fingering, Server-Sent Events ( SSE ) and how we Link or button 2022 Stack Exchange Inc ; user contributions licensed under CC BY-SA of comment like # ; can Glasses to see survive on the right side and the third expression when these values are.! Answer, you will find even more interesting facts about the null operator
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