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1. www.php.net › manual › enPHP: define - Manual

   www.php.net › manual › en

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   Description ¶. define (string $constant_name, mixed $value, bool $case_insensitive = false): bool. Defines a named constant at runtime. Parameters ¶. constant_name. The name of the constant. Note: It is possible to define () constants with reserved or even invalid names, whose value can (only) be retrieved with constant ().

2. www.w3schools.com › PHP › func_misc_definePHP define() Function - W3Schools

   www.w3schools.com › PHP › func_misc_define

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   Technical Details. Return Value: Returns TRUE on success or FALSE on failure. PHP Version: 4+. Changelog: PHP 7.3: Defining case-insensitive constants is deprecated. PHP 7: The value parameter can also be an array. PHP 5: The value parameter must be a string, integer, float, boolean or NULL.

   • name: Required. Specifies the name of the constant

3. docs.phplang.net › en › functiondefine - PHP Manual

   docs.phplang.net › en › function

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   Description ¶. define (string $constant_name, mixed $value, bool $case_insensitive = false): bool. Defines a named constant at runtime. Parameters ¶. constant_name. The name of the constant. Note: It is possible to define () constants with reserved or even invalid names, whose value can (only) be retrieved with constant ().

4. www.geeksforgeeks.org › what-is-the-differenceWhat is the Difference Between define() and const Keyword in ...

   www.geeksforgeeks.org › what-is-the-difference

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   Feb 13, 2024 · A define() method is evaluated at runtime, whereas const the keyword is evaluated at compile time. Constants defined using const keywords are case-sensitive, whereas those defined using define() are case-insensitive by default.

5. stackoverflow.com › questions › 27303062strstr() function like, that ignores upper or lower case

   stackoverflow.com › questions › 27303062

   Dec 5, 2014 · While some compiler's C libraries include extensions with case insensitive versions of the standard string functions, such as GNU's strcasestr(), the naming of such functions is not standardised even when included.

6. datasciencewithchris.com › overview-of-error-lossOverview of Error, Loss, and Cost Functions

   datasciencewithchris.com › overview-of-error-loss

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   Apr 1, 2023 · Epsilon Insensitive Cost Function. The Epsilon Insensitive cost function is equal to zero when the absolute difference between the true and predicted values is less than epsilon. Otherwise, the loss is equal to the absolute difference between the true and predicted values, minus epsilon.

7. People also ask

   How do I define a case-sensitive constant?

   • Define a case-sensitive constant: define ("GREETING","Hello you! How are you today?"); The define () function defines a constant. Required. Specifies the name of the constant Required. Specifies the value of the constant. Optional. Specifies whether the constant name should be case-insensitive. Possible values:

   PHP define() Function | W3Schools

   www.w3schools.com/PHP/func_misc_define.asp

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   Are PHP functions case-insensitive?

   • Functions and methods in PHP are case-insensitive as illustrated in the following example. echo '2'; function clMe() echo 'hi'; But that's the not case with variables. What's the rationale? PHP doesn't need no stinkin' rationale! "Because the soup man says so."

   Why are functions and methods in PHP case-insensitive?

   stackoverflow.com/questions/2749781/why-are-functions-and-methods-in-php-case-insensitive

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   What is the difference between epsilon insensitive loss function and squared loss function?

   • The main difference between the epsilon insensitive loss function and the squared epsilon insensitive loss function lies in how they penalize errors that exceed the threshold value, epsilon.

   Overview of Error, Loss, and Cost Functions - Data Science With Chris

   datasciencewithchris.com/overview-of-error-loss-and-cost-functions/

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   What is epsilon insensitive cost function?

   • Mathematical Formula of SVM for Regression (SVR) with Epsilon Insensitive The Epsilon Insensitive cost function is designed to be less sensitive to outliers in the data. Also, the function is very flexible regarding the parameter epsilon that can be optimized to achieve the best regression solution.

   Overview of Error, Loss, and Cost Functions - Data Science With Chris

   datasciencewithchris.com/overview-of-error-loss-and-cost-functions/

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   Are function names case-sensitive?

   • Yes, functions and methods names are not case-sensitive. And yes, variables names are case-sensitive. I am not sure there's a reason for that -- except it's been this way for a long time, and, so, remains the case, for backward compatibility reasons. As a reference, a couple of links / quotes to various pages of the manual:

   Why are functions and methods in PHP case-insensitive?

   stackoverflow.com/questions/2749781/why-are-functions-and-methods-in-php-case-insensitive

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8. lindevs.com › defining-case-insensitive-constantsDefining Case-insensitive Constants Has Been Removed in PHP 8.0

   lindevs.com › defining-case-insensitive-constants

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   Dec 19, 2020 · PHP allows defining constants using define function. Defined constants are case-sensitive. For example, DB_USER and db_user represents different constants. In versions prior to PHP 8.0, it was possible to define case-insensitive constants by passing true as a third parameter of the function.