PHP POST数组的初始化，下面的堆栈是我的PHP程序正在读POST的数据的时候打出来的：
# gstack 13339
#0 0x003aa7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1 0x0048b12d in poll () from /lib/tls/libc.so.6
#2 0x00762558 in apr_wait_for_io_or_timeout ()
#3 0x0075bba4 in apr_socket_recv () from /data1/apache2/lib/libapr-1.so.0
#4 0x00e3d840 in socket_bucket_read ()
#5 0x08072668 in ap_core_input_filter ()
#6 0x00b21ad5 in logio_in_filter () from /data1/apache2/modules/mod_logio.so
#7 0x0807f634 in ap_http_filter ()
#8 0x013496e8 in php_apache_sapi_read_post ()
#9 0x0129399a in sapi_deactivate () from /data1/apache2/modules/libphp5.so
#10 0x0128cae6 in php_request_shutdown ()
#11 0x0134a1ca in php_handler () from /data1/apache2/modules/libphp5.so
#12 0x08073dea in ap_run_handler ()
#13 0x080741bf in ap_invoke_handler ()
#14 0x0807ee55 in ap_process_request ()
#15 0x0807c8c9 in ap_process_http_connection ()
#16 0x08079762 in ap_run_process_connection ()
#17 0x08082a6e in child_main ()
#18 0x08082c46 in make_child ()
#19 0x080837cd in ap_mpm_run ()
#20 0x08063de4 in main ()
———————–
# telnet 10.55.38.14 80
Trying 10.55.38.14…
Connected to 10.55.38.14 (10.55.38.14).
Escape character is ‘^]’.
POST /sso/login.php HTTP/1.1
host: login.sina.com.cn
content-length: 1000000000
aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaa