This part of the program is also conventional PHP - in this case, with fread.

程序的这一部分也符合常规php——在本例中，使用fread。

youdao

The fgets, fgetss, fread, fscanf, and fclose functions also return False on error.

fscanf 和 fclose 函数在出错时也返回 False。

youdao

Note that no matter what number you specify, fread will not read more than 8,192 bytes (8 KB).

不管指定多少字节，fread都不会读取超过8,192个字节(8 KB)。

youdao