How Referencing Superglobals?

[xcomm]

Hi All,

<?php
$vars= array("_SERVER[HTTP_REFERER]","_SERVER[HTTP_USER_AGENT]","_SERVER[REMOTE_HOST]","_SERVER[REMOTE_ADDR]","_SERVER[QUERY_\
STRING]","_SERVER[PATH_INFO]");
foreach($vars as $var) {
if(isset($$var) )echo("$var: ${$var}<br>\n") ;
}
?>

php.net:
Please note that variable variables cannot be used with PHP's
Superglobal arrays. This means you cannot do things like ${$_GET}. If
you are looking for a way to handle availability of superglobals and
the old HTTP_*_VARS, you might want to try referencing them.

Could someone hint me please how to use a reference here to get it or
is there a other error above?

Thank you in advance!
Regards, Jan

[Michael Austin]

xcomm wrote:

Hi All,

<?php
$vars= array("_SERVER[HTTP_REFERER]","_SERVER[HTTP_USER_AGENT]","_SERVER[REMOTE_HOST]","_SERVER[REMOTE_ADDR]","_SERVER[QUERY_\
STRING]","_SERVER[PATH_INFO]");
foreach($vars as $var) {
if(isset($$var) )echo("$var: ${$var}<br>\n") ;
}
?>

php.net:
Please note that variable variables cannot be used with PHP's
Superglobal arrays. This means you cannot do things like ${$_GET}. If
you are looking for a way to handle availability of superglobals and
the old HTTP_*_VARS, you might want to try referencing them.

Could someone hint me please how to use a reference here to get it or
is there a other error above?

Thank you in advance!
Regards, Jan

after looking at this until I am blind, I finally read the docs... Duhhh!!

<<http://us2.php.net/manual/en/language.variab les.variable.ph p>>

Warning
Please note that variable variables cannot be used with PHP's
Superglobal arrays. This means you cannot do things like ${$_GET}. If
you are looking for a way to handle availability of superglobals and the
old HTTP_*_VARS, you might want to try referencing them.

So, in other words... you're out of luck... Since it is only 5 or 6 of
them and you have to get them into an array, just processes them without
putting them into an array -- as you have seen, can't be done...

Michael Austin.

[Pedro Graca]

xcomm wrote:

<?php
$vars= array("_SERVER[HTTP_REFERER]","_SERVER[HTTP_USER_AGENT]","_SERVER[REMOTE_HOST]","_SERVER[REMOTE_ADDR]","_SERVER[QUERY_\
STRING]","_SERVER[PATH_INFO]");
foreach($vars as $var) {
if(isset($$var) )echo("$var: ${$var}<br>\n") ;
}
?> .... Could someone hint me please how to use a reference here to get it or
is there a other error above?

Try this:

<?php
$keys = array('HTTP_REF ERER]', 'HTTP_USER_AGEN T]', 'REMOTE_HOST',
'REMOTE_ADDR', 'QUERY_STRING', 'PATH_INFO');

foreach ($keys as $key) {
if (isset($_SERVER[$key])) echo "_SERVER[$key]: {$_SERVER[$key]}<br>\n";
else echo "_SERVER[$key] is not set<br>\n";
}
?>

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