[SOLVED] Problem with the while function

[isbhenrylu]

Hi guys,

I've got a problem to do with the while() function. What I'm trying to do is to create a table of 2 columns, one column is user id and the other is user names. This is what I did:

 

<table border="2px">

<tr>

    <th>NameId</th>

        <th>Name</th>

    </tr>

<?php

$c = 1;

define ('NAME1', 'Henry');

define ('NAME2', 'Mary');

define ('NAME3', 'Gary');

define ('NAME4', 'Cherry');

define ('NAME5', 'Berry');

 

 

 

$i = 1;

 

    while ($c <= 5){

echo "<tr><td>" . $c . "</td>";

 

while ($i == $c){

echo "<td>" . NAME . $i . "</td>";

$i++;

}

echo "</td>";

$c++;

}

?>

</table>

 

The user id part works fine, going from 1-5 for the 5 rows. But for the user name column, the result is NAME1, NAME2, NAME3, NAME4, NAME5 instead of Henry, Mary, Gary, Cherry, Berry.

 

Can someone please tell me why

    echo "<td>" . NAME . $i . "</td>";

is interpreted literally as NAME1 instead of finding the constant NAME1 and returning the value "Henry", which was defined in the constant at the start of the script.

 

Really appreciate if someone can show me how to fix this problem as I'm a newbie in programming, thanks!

[DEVILofDARKNESS]

it would be easier to say

while ($c <= 5){
      echo "<tr><td>" . $c . "</td><td>" . NAME . $i . "</td>";
      $i++;
      $c++;
   }

 

but please use code-tags

[isbhenrylu]

Sorry mate, but this still doesn't solve the problem. The results is still:

 

NameId

Name

1

NAME1

2

NAME2

3

NAME3

4

NAME4

5

NAME5

 

instead of what I want it to yield, which is suppose to be:

NameId

Name

1

Henry

2

Mary

3

Gary

4

Cherry

5

Berry

 

Please help! thanks

[DEVILofDARKNESS]

yeah ofcourse it does.

 

maybe this helps:

 

while ($c <= 5){
      echo "<tr><td>" . $c . "</td><td>'NAME" . $i . "'</td>";
      $i++;
      $c++;
   }

[trq]

Your code won't work straight up with simple variables let alone constants. You might try this....

 

echo "<td>{NAME . $i}</td>";

 

But I'm not sure it'll work and I can't test atm.

[trq]

Yeah, actually thats not going to work. constants aren't interpolated within strings. Really don't see any way of doing what you want (variable variables with constants. Variables, yeah, simple.

[Mark Baker]

echo "<td>".constant('NAME'.$i)."</td>";

[DEVILofDARKNESS]

that should work,

to call a define(...) you need to use echo constant(...)

I just saw it on w3schools

but baker was faster

[isbhenrylu]

Thanks it worked. Really appreciate it.