Outputting Data to the Browser

Question 1

What three functions can be used to output data to the browser?

Answer 1

1. print()
2. echo()
3. printf()

Question 2

Write a plausible PHP print statement

Question 3

Write a plausible echo statement

Question 4

When should a programmer use the printf() statement?

Answer 4

The printf() statement is ideal when you want to output a blend of static text and dynamic information stored within one or several variables.

Question 5

Write a plausible printf() statement

Answer 5

printf(“Bar inventory: %d bottles of tonic water.”, 100);

Question 6

%b specifies…

Answer 6

binary number

Question 7

%c specifies…

Answer 7

a character corresponding to a ASCII value

Question 8

%d specifies…

Answer 8

a signed decimal number

Question 9

%f specifies …

Answer 9

a floating-point number

Question 10

%o specifies…

Answer 10

an octal number

Question 11

%s specifies…

Answer 11

a string

Question 12

%u specifies…

Answer 12

an unsigned integer

Question 13

%x specifies…

Answer 13

a lower-case hexadecimal number

Question 14

%X specifies…

Answer 14

an upper-case hexadecimal number

Question 15

What’s the difference between printf() and sprintf()?

Answer 15

The sprintf() statement is functionally identical to printf() except that the output is assigned to a string rather than rendered to the browser.