[Resolved] saving configuration using var_export

finger

hello,
i've written a configuration tool for a website. that tool saves the configuration as an array, which is exported to a file using the var_export-function (see code below).

the whole thing works fine, i've only one problem. theres an entry "ROOT_WWW", that contains the path to the site (including the servername). because the server can be accessed via an internal ip (192.168.) or by an external ip, so i am using the following config in my array:

array ("ROOT_WWW" => "http://$GLOBALS[SERVER_NAME]/edith5_test")

problem: when i save the array using the functions below, the variable $GLOBALS[...] gets replaced by the value (f.e. 192.168.1.5 - the internal ip):

'ROOT_WWW' => 'http://192.168.1.5/schladminger'

as a result, the site cant be accessed from outside the lan.

question: is there a way to modify the code, so that it does NOT replace the variable, but saves it as it is.

my code:

function writeConfigToFile ()
{
	global $siteinfo, $conf_file, $filehandler;

$filehandler = fopen ($conf_file, "w");

ob_start ("writeIt");
echo '<?php $siteinfo = ';
var_export ($siteinfo);
echo ' ?>';
ob_end_flush();	 

fclose ($filehandler);
}


function writeIt ($buffer)
{
	global $filehandler;

fputs ($filehandler, $buffer);
}

i'd be very thankful for every hint.

stefan

DonChris

you can prevent the variable from being
'executed' 🙂 by placing a backslash before the
$dollar:

$array=array ("ROOT_WWW" => "http://\$GLOBALS['SERVER_NAME']/edith5_test");

though i'm not shure if this works with your application...

hth
chris

finger

hi, i've already thought about trying this, but the main problem is, that var_export uses single quotes for the values and keys of an array. as a result, $GLOBALS[...] will never get executed again after i saved once.

(of course i could str_replace it, but i wonder if there is a straight solution :-)

stefan

DonChris

echo "<?php eval (\"\$siteinfo = array( 'ROOT_WWW' => \"http://\".\$GLOBALS['SERVER_NAME'].\"/edith5_test\");\"); ?>";

finger

thanks for all hints,

i did it that way:
using a placeholder {GLOBAL_SERVER}, wich gets saved in the config. in my program i replace that string with the server-ip

dirty, but it works 🙂

thx

stefan