# Double not (!!) operator in PHP

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The operator (!!) is returned as this boolean function. If you use! for expression, true will be true and false - false. This does not change the boolean value. By using this double not (!!) operator, it can improve the readability of your code and also provide true and false values ‚Äã‚Äãfor strictly boolean data types.Example 1: ``` // Declare a variable // and initialize it \$a = 1; // Use the double not operator \$a = !! \$a ; // Show value // variable a. echo \$a ; ?> The difference between the logical NOT operator (!) AND with the Double NOT (!!) operator in PHP:The Not operator mathematically complements or cancels the boolean value of the corresponding data. For example, boolean \$a = True, then NOT operator superimposed on it! \$A will be False. It’s about the logical NOT or the negation operator. Where, since the Double NOT operator (!!) only returns a boolean cast or a truth value. I.e !! \$is always TRUE. Here’s another example based on the double NOT operator.Example 2: // PHP illustration program // NOT double statement // Declare a variable and // initialize this \$t = 10; // Check status if ( \$t ! == 10) echo " This is NOT operator! " ; elseif (!! \$t ) echo "This is Double NOT operator!" ; else echo " Finish! " ; ?> The above code strictly preserves the boolean data type and returns a truth value variable. 👻 Read also: what is the best laptop for engineering students? We hope this article has helped you to resolve the problem. Apart from Double not (!!) operator in PHP, check other ast Python module-related topics. Want to excel in Python? See our review of the best Python online courses 2023. If you are interested in Data Science, check also how to learn programming in R. By the way, this material is also available in other languages: Italiano Double not (!!) operator in PHPDeutsch Double not (!!) operator in PHPFrançais Double not (!!) operator in PHPEspañol Double not (!!) operator in PHPTürk Double not (!!) operator in PHPРусский Double not (!!) operator in PHPPortuguês Double not (!!) operator in PHPPolski Double not (!!) operator in PHPNederlandse Double not (!!) operator in PHP中文 Double not (!!) operator in PHP한국어 Double not (!!) operator in PHP日本語 Double not (!!) operator in PHPहिन्दी Double not (!!) operator in PHP Chen Robinson Vigrinia | 2023-01-31 Thanks for explaining! I was stuck with Double not (!!) operator in PHP for some hours, finally got it done 🤗. Checked yesterday, it works! Xu Nickolson San Francisco | 2023-01-31 I was preparing for my coding interview, thanks for clarifying this - Double not (!!) operator in PHP in Python is not the simplest one. Will use it in my bachelor thesis Javier Innsbruck Abu Dhabi | 2023-01-31 Maybe there are another answers? What Double not (!!) operator in PHP exactly means?. Will use it in my bachelor thesis ```
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