strpth

Im new to php and trying to write a program that checks if a given number is prime but does not belong to the fibonaci series. The program should return 1 if the numer is prime and does not belong to the fibonaic series or 0 But each time i got OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO here is the code please reply ASAP <?php $a=0; $b=1; $i; $count=0; $num=10; while(num) { $k = $a+$b; $a = $b; $b = $k; $count++; while(k) { if(k%i==0) echo 0; } if(k==i) echo 1; } ?>