fp = proc_open(''zip -r9-foldertocompress''，``w''); //

fp = proc_open(''zip -r9 - foldertocompress'', ''w''); //

fp = system(''zip -r9''); //选择一个让您感到高兴的bufsize(建议使用8192).

fp = system(''zip -r9 ''); // pick a bufsize that makes you happy (8192 has been suggested).

bufsize = 8192;

bufsize = 8192;