This is the technical support forum for Toolset - a suite of plugins for developing WordPress sites without writing PHP. I tried regexp, but does not work for me. If you are looking for a way to format a numeric value as a string, please see sprintf() or number_format(). Sami December 7, 2020 0 Views 0. PHP: Tips of the Day. The $.isNumeric() returns true only if the argument is of type number, or if it's of type string and it … You can Check Value using this Function to Value is Numeric or not in PHP. By default, function arguments are passed by value (so that if the value of the argument within the function is changed, it does not get changed outside of the function). 1.2 - Number is a decimal The is_numeric() function in the PHP programming language is used to evaluate whether a value is a number or numeric string. // initializing the var with string numeric. When I look at the output, it looks like both values are numbers, but running is_numeric returns only the 2nd number as being a number. The isset() function checks whether a variable is set, which means that it has to be declared and is not NULL. You can use the jQuery $.isNumeric() method to check whether a value is numeric or a number. returns FALSE otherwise. IsNumber an excel function is used for identifying whether the cell content is a number or not. Working With Keys and Values 1 - Number is not a decimal. Reproduce code: -----