multipart/x-mixed-replace 声明是分块boundary=endofsection 声明由endofsection 分隔print "\皮枯梁n--endofsection\n"燃运; 即分隔标志print "Content-type: text/plain\n\n"; 声明败返纯文本print "Part $i\t".$pmt[$i % 4]; 输出内容