PHP5:$_SERVER, $_ENV and $_REQUEST is NULL in cached scripts
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#104 PHP5:$_SERVER, $_ENV and $_REQUEST is NULL in cached scripts
Perhaps its just me, but the superglobal $_REQUEST
isn't populated in a cached script.
I'm trying this with PHP 5.0.0 and Turck-MMCache
2.4.7-CVS on my SuSE 9.0-box atm. AFAIR it worked fine
with PHP 4.3.x and Turck-MMCache 2.4.6. I'm not sure
about PHP 4 with 2.4.7-CVS.
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i meet the same problem.i find the codes:
static char* build_key(const char* key, int key_len, int *xlen
TSRMLS_DC) {
int len = strlen(MMCG(hostname));
if (len > 0) {
char* xkey;
*xlen = len + key_len + 1;
xkey = emalloc((*xlen)+1);
memcpy(xkey, MMCG(hostname), len);
xkey[len] = ':';
memcpy(xkey+len+1, key, key_len+1);
return xkey;
} else {
*xlen = key_len;
return (char*)key;
}
}
when i use php5 the hostname cannot be get.
maybe someone can tell me how to fix it.
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i have solved this problem:
set register_long_arrays = On in php.ini and mmcache works
great!
windows2003+php5+apache2.0.51-dev
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ever tested without mmcache?
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without mmcache and register_long_arrays = Off,php5 works
right.maybe someone can fix this bug for mmcache.
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This bug is obviously related to
http://bugs.php.net/bug.php?id=29176.
xuefer wrote:
> ever tested without mmcache?
Yep, it worked fine, then.
tmgh141242 wrote:
> i have solved this problem:
> set register_long_arrays = On in php.ini and mmcache works
> great!
That did it. Thanks for that workaround :-)
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try:
register_long_arrays=Off
auto_global_jit=Off
if it's ok
to fix this bug for mmcache would require mmcache "touch"
$_SERVER and other JustInTime auto global variables
the jit seems done in Zend compiling time, not executing time
but mmcache cached opcodes, witout triggering jit.
any other opcode cacher will have same problem if it hasn't
take care of this php5 performance feature
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try:
register_long_arrays=Off
auto_global_jit=Off
if it's ok
to fix this bug for mmcache would require mmcache "touch"
$_SERVER and other JustInTime auto global variables
the jit seems done in Zend compiling time, not executing time
but mmcache cached opcodes, witout triggering jit.
any other opcode cacher will have same problem if it hasn't
take care of this php5 performance feature
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erh? i and my browser didn't post twice -_-
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register_long_arrays=Off
auto_global_jit=Off
the same problem occured!
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php_variables.c:
void php_startup_auto_globals(TSRMLS_D)
{
zend_register_auto_global("_GET", sizeof("_GET")-1,
NULL TSRMLS_CC);
zend_register_auto_global("_POST", sizeof("_POST")-
1, NULL TSRMLS_CC);
zend_register_auto_global("_COOKIE", sizeof
("_COOKIE")-1, NULL TSRMLS_CC);
zend_register_auto_global("_SERVER", sizeof
("_SERVER")-1, php_auto_globals_create_server TSRMLS_CC);
zend_register_auto_global("_ENV", sizeof("_ENV")-1,
php_auto_globals_create_env TSRMLS_CC);
zend_register_auto_global("_REQUEST", sizeof
("_REQUEST")-1, php_auto_globals_create_request
TSRMLS_CC);
zend_register_auto_global("_FILES", sizeof("_FILES")-
1, NULL TSRMLS_CC);
}
but the
php_auto_globals_create_server ,php_auto_globals_create_en
v ,php_auto_globals_create_request are related to
register_long_arrays.below is php_auto_globals_create_server:
static zend_bool php_auto_globals_create_server(char
*name, uint name_len TSRMLS_DC)
{
php_register_server_variables(TSRMLS_C);
zend_hash_update(&EG(symbol_table), name,
name_len+1, &PG(http_globals)[TRACK_VARS_SERVER], sizeof
(zval *), NULL);
PG(http_globals)[TRACK_VARS_SERVER]-
>refcount++;
if (PG(register_long_arrays)) {
zend_hash_update(&EG
(symbol_table), "HTTP_SERVER_VARS", sizeof
("HTTP_SERVER_VARS"), &PG(http_globals)
[TRACK_VARS_SERVER], sizeof(zval *), NULL);
PG(http_globals)[TRACK_VARS_SERVER]-
>refcount++;
}
return 0; /* don't rearm */
}
how to fix mmcache.c?i don't know.maybe someone can do it.
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so if set register_long_arrays=off,there seems no way to get
$_SERVER,$_ENV,$_REQUEST.but the
$_COOKIE,$_POST,$_GET and $_FILES can be got rightly.
it seems to be php5's one thing.
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seens not true
jit=just in time creating the auto global array
when u have $_REQUEST in your script, Zend/compile.c will
trigger the jit
zend_bool jit_initialization = (PG(auto_globals_jit) && !PG
(register_globals) && !PG(register_long_arrays) && !PG
(register_argc_argv));
forgive my mistake
it's auto_globals_jit
not auto_global_jit
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yes!it works perfect!
can you tell me why php5 set auto_globals_jit=1?
thanks very much.
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it's not "why it set"
it's a new feature for performance
most(some?) script don't need those variables
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Can't a workaround be coded, when auto_globals_jit is turned
on? Perhaps by triggering the jit right before a request to
$_REQUEST, $_ENV or $_SERVER?
> most(some?) script don't need those variables
Well, at least phpMyAdmin and any other script using
HTTP_AUTH would fail and vBulletin (very popular) is using
$_SERVER and especially $_REQUEST scriptwide.
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yes,i think this also:"Well, at least phpMyAdmin and any other
script using
HTTP_AUTH would fail and vBulletin (very popular) is using
$_SERVER and especially $_REQUEST scriptwide."
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this is only the case when register_long_arrays is off