PHP Arrays and Control Structures quiz - do loop

Question

The question in the quiz is below:

What would be displayed when the following code is executed?

$i = 0; do { echo "$i is greater than 2\n"; $i++; } while ($i > 2);

Will the while loop only display after it runs the first three times (until it is greater than two) and when will it stop?

Thanks

Answer 1 · 2017-07-07T09:08:01Z

July 7, 2017 9:08am

<?php

$i = 0;//$i is 0 here
do {
echo "$i is greater than 2\n";//this will anyway print for the first time, as it had not met the condition.
$i++;//now the $i is 1
}
while ($i > 2);//checks the condition, exits from it.
//to answer your question, it will only print once, and the loop, would only run once, and not 3 times.
?>

Answer 2 · 2017-11-27T15:26:43Z

November 27, 2017 3:26pm

I think because the condition is not met it will not run. 1 is not greater than 2. For the loop to run the condition $i is greater than 2 must be true. The only reason it runs is that there is a "do" loop/condition before the "while" loop/condition. The "do" condition will make something happen at least once before checking to see if the "while" condition is true. I hope that helps.

Answer 3 · 2018-10-08T17:26:41Z

October 8, 2018 5:26pm

I'm afraid this quiz question leaves me feeling more than a little lost as well; did I miss something about the explanation of a "while" loop that inherently exits the loop after a single instance? Any light that anyone can shed on this would help a lot. Thanks in advance. : )

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