--TEST-- Test filesize() function: usage variations - file mode & holes in file --SKIPIF-- --FILE-- ?|~+!;',.\][{}(special) cha rs, 12345(numeric) chars, and \n(newline char), \t(tab), \0, \r and so on........\0"; echo "-- opening the file in 'w' mode and get the size --\n"; $file_handle = fopen($filename, "w"); var_dump( strlen($string) ); //strlen of the string fwrite($file_handle, $string); fclose($file_handle); var_dump( filesize($filename) ); //size of the file = strlen of string clearstatcache(); echo "-- opening the file in 'wt' mode and get the size --\n"; $file_handle = fopen($filename, "wt"); var_dump( strlen($string) ); //strlen of the string = 191 bytes fwrite($file_handle, $string); fclose($file_handle); var_dump( filesize($filename) ); //size of the file = strlen of string = 191 bytes clearstatcache(); echo "-- opening the file in 'a' mode, adding data and checking the file --\n"; $file_handle = fopen($filename, "a"); fwrite($file_handle, "Hello, world"); fclose($file_handle); var_dump( filesize($filename) ); //203 bytes clearstatcache(); echo "-- opening the file in 'at' mode, adding data and checking the file --\n"; $file_handle = fopen($filename, "at"); fwrite($file_handle, "Hello, world\n"); fclose($file_handle); var_dump( filesize($filename) ); //216 bytes clearstatcache(); echo "-- creating a hole and checking the size --\n"; $file_handle = fopen($filename, "a"); var_dump( ftruncate($file_handle, 220) ); //creating 4 bytes of hole fclose($file_handle); var_dump( filesize($filename) ); //220 bytes clearstatcache(); echo "-- writing data after hole and checking the size --\n"; $file_handle = fopen($filename, "a"); fwrite($file_handle, "Hello\0"); //writing 6 bytes of data fclose($file_handle); var_dump( filesize($filename) ); //226 bytes clearstatcache(); echo "-- opening the existing file in write mode --\n"; fclose( fopen($filename, "w") ); var_dump( filesize($filename) ); //0 bytes clearstatcache(); echo "-- with empty file --\n"; $filename = __DIR__."/filesize_variation4_empty.tmp"; fclose( fopen($filename, "w") ); var_dump( filesize($filename) ); //0 bytes echo "*** Done ***\n"; ?> --CLEAN-- --EXPECT-- *** Testing filesize(): usage variations *** *** Testing filesize() with data written using different file modes and by creating holes in file *** -- opening the file in 'w' mode and get the size -- int(192) int(192) -- opening the file in 'wt' mode and get the size -- int(192) int(192) -- opening the file in 'a' mode, adding data and checking the file -- int(204) -- opening the file in 'at' mode, adding data and checking the file -- int(217) -- creating a hole and checking the size -- bool(true) int(220) -- writing data after hole and checking the size -- int(226) -- opening the existing file in write mode -- int(0) -- with empty file -- int(0) *** Done ***