Whats wrong with "Take a short cut" in php

Question

$x = 0;
while($x<=7) {
$x++;
}
echo $x;

Answer 1

It outputs 8 after the loop.

Answer 2

how? please explain

Answer 3

In the last iteration of the while loop, the comparison checks to see if $x is less than or equal to 7. $x is 7 and the loop is entered and $x is incremented to 8. Then the comparison is checked again, but 8 is greater than 7, so the while loop is exited and $x is echoed outputting 8