generating variables automatically

GRUMBLE

ims using a form with a unkown number of fields, like:

while (...) {
$i++;
echo "<input type=text name='text".$i."'>";
}

and on the next page i want to access these variables, but how do i get them?

thanks.

kevinsequeira

try this

$vars = $HTTP_POST_VARS;
foreach($vars as $key=>$value){
         if(substr($key,0,4)=="text"){
           echo $value;
         }
}

reg
kevin

GRUMBLE

thanks a lot first of all. this works, but im afraid it is not really useful for my specific problem.

i didnt say that i dont only have one variable but a triplet of them

while (...) { 
$i++; 
echo "<input type=text name='url".$i."'>"; 
echo "<input type=text name='urltext".$i."'>"; 
echo "<input type=text name='id".$i."'>"; 
}

and then i want to insert these into a mysql-db for each triplet of them

INSERT INTO links(id,urltext,url) VALUES ('$id1','$urltext1','$url1')
INSERT INTO links(id,urltext,url) VALUES ('$id2','$urltext2','$url2')
and so on...

kevinsequeira

change the name of the field in the form from urltext to texturl,

<?php
$id_array = array();
$text_array = array();
$url_array = array();
foreach($vars as $key=>$value){
  if(substr($value,0,2)=="id"){
   $i_key = substr($value,2);
		 $i_array[$i_key]=$value;
  }

  if(substr($value,0,7)=="texturl"){
   $t_key = substr($value,7);
   $text_array[$t_key]=$value;
  }

  if(substr($value,0,3)=="url"){
   $u_key = substr($value,3);
   $url_array[$u_key]=$value;
  }                

}

//set up db connections

for($i=1;$i<=count($text_array);$i++){

$q = "INSERT INTO links(id,urltext,url) VALUES ('".$id_array[$i]."', '".$text_array[$i]."', '".$url_array[$i]."')";

// echo $q to debug

echo $q."<BR>";

 mysql_query($q);

}        

// close db connections

?>

reg
kevin

GRUMBLE

actually it works! cause the input fields are ordered, like

id1
url1
urltext1

id2
url2
urltext2

...

and so also the HTTP_POST_VARS array is ordered.

thanks!

kevinsequeira

cool, but the logic wasn't right, i have changed the code, so u can use the edited code if you want
also pls mark this thread resolved if u have no more doubts on this issue, there is a link below

reg
kevin

GRUMBLE

the new version didnt work. dont know why, cause i didnt look into it since the other one works.

and i think in the for loop it should be
$i<count($text_array);

big thanks again!!!