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Exam 200-550 topic 1 question 37 discussion

Actual exam question from Zend's 200-550

Question #: 37
Topic #: 1

[All 200-550 Questions]

What is the output of the following code?
class Test {
public function __call($name, $args)
{
call_user_func_array(array('static', "test$name"), $args);
}
public function testS($l) {
echo "$l,";
}
}
class Test2 extends Test {
public function testS($l) {
echo "$l,$l,";
}
}
$test = new Test2();
$test->S('A');

A. A,
B. A,A,
C. A,A,A,
D. PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback

Show Suggested Answer

Suggested Answer: B 🗳️

by Sgeleon at May 1, 2021, 10:01 a.m.

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Sgeleon

2 years, 12 months ago

class Test { public function __call($name, $args) { call_user_func_array(array('static', "test$name"), $args); } public function testS($l) { echo "$l,"; } } class Test2 extends Test { public function testS($l) { echo "$l,$l,"; } } $test = new Test2(); $test->S('A');

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Exam 200-550 topic 1 question 37 discussion

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