How check if value is number in PHP?
How check if value is number in PHP?
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.
How do you check if a number is whole in PHP?
if y is anything other then a whole number the result is not a zero (0). A test then would be: if (y % 1 == 0) { // this is a whole number } else { // this is not a whole number } var isWhole = (y % 1 == 0? true: false); // to get a boolean return.
How do you check if a number is exponential 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.
Is a function a numeric?
Returns a Boolean value indicating whether an expression can be evaluated as a number. The required expressionargument is a Variant containing a numeric expression or string expression. IsNumeric returns True if the entire expression is recognized as a number; otherwise, it returns False.
How can we check the value of a given variable is alphanumeric?
PHP | ctype_alnum() (Check for Alphanumeric) A ctype_alnum() function in PHP used to check all characters of given string/text are alphanumeric or not. If all characters are alphanumeric then return TRUE, otherwise return FALSE.
Is an integer PHP?
The is_int() function checks whether a variable is of type integer or not. This function returns true (1) if the variable is of type integer, otherwise it returns false.
What is Ctype_digit?
A ctype_digit() function in PHP used to check each and every character of text are numeric or not. It returns TRUE if all characters of the string are numeric otherwise return FALSE.
