How check value is number or not in php?
(PHP 4, PHP 5, PHP 7, PHP 8) Show is_numeric — Finds whether a variable is a number or a numeric string Descriptionis_numeric(mixed Parametersvalue The variable being evaluated. Return Values Returns Changelog
ExamplesExample #1 is_numeric() examples
$tests as $element) { The above example will output: '42' is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337.0 is numeric '0x539' is NOT numeric '02471' is numeric '0b10100111001' is NOT numeric '1337e0' is numeric 'not numeric' is NOT numeric array ( ) is NOT numeric 9.1 is numeric NULL is NOT numeric '' is NOT numeric Example #2 is_numeric() with whitespace
$tests as $element) { Output of the above example in PHP 8: ' 42' is numeric '42 ' is numeric ' 9001' is NOT numeric '9001 ' is NOT numeric Output of the above example in PHP 7: ' 42' is numeric '42 ' is NOT numeric ' 9001' is NOT numeric '9001 ' is NOT numeric See Also
sobolanx at gmail dot com ¶ 11 years ago
moskalyuk at gmail dot com ¶ 16 years ago
ben at chico dot com ¶ 8 years ago
kouber at saparev dot com ¶ 18 years ago
Magnus Deininger, dma05 at web dot de ¶ 13 years ago
What is not a number in PHP?To check if given string is a number or not, use PHP built-in function is_numeric(). is_numeric() takes string as an argument and returns true if the string is all numbers, else it returns false.
Is numeric or INT PHP?The key difference between these two functions is that is_int() checks the type of variable, while is_numeric() checks the value of the variable. $var = "123"; $var is a string of numbers, not an integer value.
What is numeric value in PHP?The is_numeric() function in the PHP programming language is used to evaluate whether a value is a number or numeric string. Numeric strings contain any number of digits, optional signs such as + or -, an optional decimal, and an optional exponential. Therefore, +234.5e6 is a valid numeric string.
How check string is value or not in PHP?The is_string() function checks whether a variable is of type string or not. This function returns true (1) if the variable is of type string, otherwise it returns false/nothing.
|