stream_set_chunk_size
  Set the stream chunk size
  
 
  Description
  
   int stream_set_chunk_size
    ( resource $fp
   , int $chunk_size
   )
  
  
 
  Parameters
  
   
    - 
fp
- 
     
      The target stream.
      
- 
chunk_size
- 
     
      The desired new chunk size.
      
 
 
  Return Values
  
   Returns the previous chunk size on success.
  
  
   Will return FALSE if chunk_size is less than 1 or
   greater than PHP_INT_MAX.
  
  
 
  Errors/Exceptions
  
   Will emit an E_WARNING level error if chunk_size
   is less than 1 or greater than PHP_INT_MAX.