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

   www.php.net › manual › en

   Finds whether a variable is a number or a numeric string

   • Strval

     Get the string value of a variable. See the documentation on...

   • Unset

     unset () destroys the specified variables. The behavior of...

   • Isset

     Determine if a variable is considered set, this means if a...

   • Floatval

     Return Values ¶ The float value of the given variable. Empty...

   • Gettype

     gettype (PHP 4, PHP 5, PHP 7, PHP 8) gettype — Get the type...

   • Boolval

     boolval (PHP 5 >= 5.5.0, PHP 7, PHP 8) boolval — Get the...

   • Settype

     settype (PHP 4, PHP 5, PHP 7, PHP 8) settype — Set the type...

   • Doubleval

     Alias of floatval

2. www.w3schools.com › php › func_var_is_numericPHP is_numeric () Function - W3Schools

   www.w3schools.com › php › func_var_is_numeric

   Definition and Usage The is_numeric () function checks whether a variable is a number or a numeric string. This function returns true (1) if the variable is a number or a numeric string, otherwise it returns false/nothing.

3. www.geeksforgeeks.org › php › php-is_numeric-functionPHP | is_numeric() Function - GeeksforGeeks

   www.geeksforgeeks.org › php › php-is_numeric-function

   Jun 21, 2018 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more.

4. www.tutorialspoint.com › php › php_is_numericPHP is_numeric Function - Online Tutorials Library

   www.tutorialspoint.com › php › php_is_numeric

   Discover the PHP is_numeric function for checking if a value is numeric. Get detailed examples and learn its applications in web development.

5. phpdoctest.github.io › en › functionPHP Manual: Finds whether a variable is a number or a numeric ...

   phpdoctest.github.io › en › function

   Finds whether the given variable is numeric. Numeric strings consist of optional sign, any number of digits, optional decimal part and optional exponential part. Thus +0123.45e6 is a valid numeric value. Hexadecimal (e.g. 0xf4c3b00c) and binary (e.g. 0b10100111001) notation is not allowed.

6. www.w3resource.com › php › function-referencePHP is_numeric () function - w3resource

   www.w3resource.com › php › function-reference

   Aug 19, 2022 · The PHP is_numeric() function checks if a variable is a number or a numeric string, useful for validating input in PHP applications.

7. People also ask

   What is is_numeric() function in PHP?

   • The is_numeric () function is an inbuilt function in PHP which is used to check whether a variable passed in function as a parameter is a number or a numeric string or not. The function returns a boolean value. Syntax: Parameters: The function accepts a single parameter which is mandatory and described below:

   PHP | is_numeric() Function - GeeksforGeeks

   www.geeksforgeeks.org/php/php-is_numeric-function/

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   How to check if a variable is a number in PHP?

   • ❮ PHP Variable Handling Reference Check whether a variable is a number or a numeric string, or not: The is_numeric () function checks whether a variable is a number or a numeric string. This function returns true (1) if the variable is a number or a numeric string, otherwise it returns false/nothing. Required. Specifies the variable to check

   PHP is_numeric () Function - W3Schools

   www.w3schools.com/php/func_var_is_numeric.asp

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   How does PHP variable handling is_numeric() work?

   • This program uses the PHP Variable Handling is_numeric () function to find out whether or not different values are numeric. It checks three types of strings: numbers, numerical strings, and non-numerical strings. It is useful to understand how is_numeric () works.

   PHP Variable Handling is_numeric () Function

   www.tutorialspoint.com/php/php_is_numeric_function.htm

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   How to check if a variable is numeric?

   • The is_numeric () function is used to check whether a variable is numeric or not. Version: (PHP 4 and above) Syntax: Parameter: *Mixed : Mixed indicates that a parameter may accept multiple (but not necessarily all) types. Return value: TRUE if var_name is a number or a numeric string, FALSE otherwise.

   PHP: is_numeric () function - w3resource

   www.w3resource.com/php/function-reference/is_numeric.php

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8. php-safari.com › function › is_numericPHP function - is_numeric | PHP Safari

   php-safari.com › function › is_numeric

   Finds whether a variable is a number or a numeric string