Regular expression

Anon

Hi,

i looking for every help existing, but i don't found any solution !
my probleme:

I would like to get the value of a var which is in the QUERY_STRING !
example:

test.phtml?id=1&var=val&action=voir&

<?
$VAR="id";
echo "QUERY_STRING= $QUERY_STRING \n";
echo "var= $VAR \n";
$express = ".".$VAR."=(.)([&.*|$]+)";
echo "expression= $express \n";
if(eregi( $express, $QUERY_STRING, $VAL) )
{
$VAL = $VAL[1];
echo "Val found= $VAL \n";
}
else
{echo "val not found ! \n";}
?>

return:
QUERY_STRING= id=1&var=val&action=voir&
var= id
expression= .id=(.)([&.*|$]+)
Val found= 1&var=val&action=voir

I want to get '1' and not the end of the line
I don't know why it return the end of the line.

Please Help !!!!!!!!!

Anon

Perhaps you should use:

while (list ($key, $val) = each ($HTTP_POST_VARS)) {

echo "<tr><td>$key:</td><td>$val</td></tr>\n"; }

The $HTTP_POST_VARS is perfect!

Hans

Anon

I should be perfect if I use POST VAR and not GET VAR 🙂

I will try to explain what my probleme is (i'm french so do be afraid by my langage 🙂

i do script which build HTML form automaticaly. this script use a .dat file to configure the HTML form.

my script must be able to give selected var whose have be given to him (understand ?)

the selected var is in the .dat.
If val is give in the .dat, my script give this value to the next page
else the script get the previous value of the var and give it to the next page
it's not very easy to understand (and it's harder when I explain it 🙂
example:
in my .dat
[parameter]
//list of parameters whose must be reward
id
var4test=val4test

in the HTML page:(it receive as argument id=4)
<A href="nextpage.hml?id=4&var4test=val4test&other_var=foo">link</A>

solution:
1- get the value
why don't try to get directly $id, because if i use another id var in my script, i will loose the origin value of $id

after hard thinking, i found that regular expression it's the best way to do.I use that:

in my script:
<?
$VAR="id";
echo "QUERY_STRING= $QUERY_STRING \n";
echo "var= $VAR \n";
//$express = "(.)(".$VAR.")(=)(.)+(&|$)(.)";
$express = "(.".$VAR."=?)(.)(((&.)|($))?)";
echo "expression= $express \n";
if(eregi( $express, $QUERY_STRING, $VAL) )
{
$VAL = $VAL[2];
echo "Val found= $VAL \n";
}
else
{echo "val not found ! \n";}
?>

but it return:
QUERY_STRING= id=1&var=val&action=voir&
var= id
expression= (.id=?)(.)(((&.*)|($))?)
Val found= 4&var4test=val4test&other_var=foo

I cannot found the correct regular expression to return only the value of the var

if you have question, ask it 🙂

thanx very much

Anon

BixY wrote:

I should be perfect if I use POST VAR and not GET VAR 🙂

Well then... USE GET VAR! ;-)

reset ($HTTP_GET_VARS);
while (list ($key, $val) = each ($HTTP_GET_VARS)) {
  echo "$key => $val ";
}

Anon

thanx
I finally found my Regular expression (a friend to be exact)
if you want to know,it is:
(.)(".$var.")(=)([^&])(.*)

where $var is the variable which i looking the value for

the value is in the 4° place of the array returned

again, excuse my poor english