for loop inside if condition in php

I need to run set of code inside for-loop only if certain condition is satisfied like:

@for($i = 0; $i <= $date_diffrence; $i++)
   @if(condition)
      $temp = $i; 
      @for($multDayCount=0; $multDayCount<count($dayDifferenceArr); $multDayCount++)
         $i = $dayDifferenceArr[$multDayCount];

   @endif

....
   @if(condition)
      @endfor
       $i = $temp;
   @endif
 @endfor

How can I loop like this? Any help would be greatly appreciated.