Challenge for ZEND PHP5 Certification - 002

[hinom 5]

Exercise 2

 

What will be the output of the following code?

 

<?php
echo 30 * 5 . 7;
?>

a. 150 . 7

b. 1507

c. 150.7

d. you can't concatenate integers

[hinom 5]

Answer: B

 

Explanation

The arithmetic operation will be interpreted before the concatenation

 

30 * 5 // return 150

then, is concatenated with the number 7

 

echo 150 . 7;  //return 1507

http://php.net/manual/pt_BR/language.opera....arithmetic.php