Sams Teach Yourself PHP in 24 Hours, Third Edition

Workshop

Quiz

1:	Which conversion specifier would you use with printf() to format an integer as a double? Write down the full syntax required to convert the integer 33.
2:	How would you pad the conversion you effected in question 1 with zeroes so that the part before the decimal point is four characters long?
3:	How would you specify a precision of two decimal places for the floating-point number you have been formatting in the previous questions?
4:	Which function would you use to determine the length of a string?
5:	Which function would you use to acquire the starting index of a substring within a string?
6:	Which function would you use to extract a substring from a string?
7:	How might you remove white space from the beginning of a string? ...