5. Try entering alphanumeric values in (Best web site) the rating
5. Try entering alphanumeric values in the rating field, as in Figure 8-8 (which could easily have been a drop-down but is a text field for the purpose of the exercise). Figure 8-8 If the entered value is not in the 0 to 10 range, it will be refused. (Note that the decimals are not managed in this code and will be lost.) How It Works First, let s look into the type validating functions. In the commit.php code, you use the is_numeric() function. This function returns a Boolean TRUE if the value is indeed numeric and FALSE if not. More of these validating functions are available, including: . is_string, which checks to see if the value is of the string format . is_bool, which checks for Boolean type (TRUE, FALSE, 0, or 1) . is_array, which tells you if the variable holds an array 247 Validating User Input
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