Few simple string q's

Anon

I can't find the answer in the manual, it is not a commonly used feature I guess, I want to know how to use commas to separate form values except the , to not follow the last value

So if one submits

field 1
field 2
field 3
field 4

the next response page shows
answer 1, answer 2, answer 3, answer 4

thing is, the form field total can change, so i want to learn how to take the basic loop to display all variables but separate with commas

Can this be done? I'd presume so, I can do it in asp, not php. Bleh lol

Thanks, I am checking each string function and what not...

lucianoes

I don't know how to do that unless I know the number of fields beforehand. So:

echo "$answer1, $answer2, $answer3, $answer4.";

Unless you know the maximum possible number of fields. Let's suppose it's 20:

$count = 1;
while ($count < 21)
{
$field = "field$count";
echo "$field, "
$count++;
}

I'm sure there is some mistake in that script, but you probably can fix it accordingly.

Luciano ES
Santos, SP - Brasil

terje-s

Well, the easiest solution (I think) is to make sure that you first of all have the variables in an array. I.e. use names on your inputs like answer[question1], answer[question2] etc.

Whenever this page is submitted, you have an array called $answer with all the (d-oh) answers in it. Now, there are several techniques to convert this to a comma separated list. The most obvious one would be $string = implode(', ', $answer);.

Alternately, I paste a function i wrote ages ago, just in case it's of any interest.

function implode_array2csv($array, $separator, $quote) {
$csv = "";
foreach ($array AS $key => $val) {
$csv .= "$quote$val$quote$separator";
}
$csv = substr($csv, 0, strlen($csv)-1);
return $csv;

}

Note that I remove the trailing $separator (wich usually is ',' or ';') with a simple substr. That is, remove the last character, as i know it's a separator. This might not be all good. Oh well, hope it helped.

lucianoes

If you turn it all into an array, then you can easily use array_walk() to print what he wants, but by the time you have an array you're already beyond the purpose. The work and logic required to make the array are just the same and enough to print the values without having to go through an array in the first place.

    Luciano ES
    Santos, SP - Brasil

Anon

Thanks, but how do I take this:
foreach ($HTTP_POST_VARS as $var => $value)
{
echo "$var = $value<br>\n";
}

which prints from top/bottom the
results

I want to just have the dynamic field responses (dynamic in NOT knowing how many form fields) listed as

answer, answer 2, answer 3
if there are 3 form fields, and automatically spit out

answer, answer1, answer 2, answer3, answer4
if there are 5

Is that what the above code does?

In asp, a few lines can do this

can php do this or not?

Implode/explode examples in php.net didn't help, so I am not getting something

Thanks

lucianoes

I had completely forgotten about $HTTP_POST_VARS. Plain logic tells me that your code should work fine, at least until I put it to practice and it proves otherwise. Have you tested it? Are you getting any error messages?

    Luciano ES
    Santos, SP - Brasil

Anon

Thanks, but the loop:

$count = 1;
while ($count < 21)
{
$field = "field$count";
echo "$field, ";
$count++;
}

has a , at the end of the last value too

that was my dilema, I must have that last , eliminated. That is my dilema

I don't know if php can do this, I would think it could...asp I can do this, and the idea is not to know how many fields

I must use this loop with $count as in field count, and do an if statement where if record = count, no , comes after

how would I do this, though?