What is the output of the following code? function append(&$str) { $str = $str.'append'; } function prepend(&$str) { $str = 'prepend'.$str; } $string = 'zce'; append(prepend($string)); echo $string;

The correct answer is C. prependzce. See the full explanation below for the reasoning.

Functions

Question

What is the output of the following code?
function append(&$str)
{
$str = $str.'append';
}
function prepend(&$str)
{
$str = 'prepend'.$str;
}
$string = 'zce';
append(prepend($string));
echo $string;

Options

Azceappend
Bprependzceappend
Cprependzce
Dzce

How the community answered

(23 responses)

A
13% (3)
B
4% (1)
C
74% (17)
D
9% (2)

Topics

#pass by reference#function composition#string concatenation#nested calls

Community Discussion

No community discussion yet for this question.

Full 200-710 Practice