Variable in Variable?

[Shawazi]

I need a variable like $track1name where 1 is a variable. I tried $track$iname and that doesnt work and I tried $track[$i]name. Which way am i forgetting?

[Shawazi]

Oh and another thing is that it's for a form.

<input type='text' name='track$iname' size='30' maxlength='50' value='$track$iname'>

[LordShryku]

Seperate them with .

echo "<input type=\"text\" name=\"track".$iname."\" size=\"30\" maxlength=\"50\" value=\"".$track.$iname."\">";

[Shawazi]

No luck with that code

[LordShryku]

Make sure you're actually using PHP. Your first code posting didn't look like you were echoing anything, but just using straight HTML. And if you had "no luck", what was the error?

[Shawazi]

Oh it was being echoed. Well I hit submit and then the value did not go through. I hit back and then refresh on my browser which would show the values of the fields (it does for the other fields) and that one comes out blank. The whole code is this

$rownum = 1;
while ($rownum <= $tracknum)
{

echo "
$rownum) Name: <input type='text' name=\"track".$iname."\" size='30' maxlength='50' value='.\"$track\".$iname."'> 
Length: <input type='text' name='track$rownumlength1' size='2' maxlength='2' value='$track$rownumlength1'>:<input type='text' name='track$rownumlength2' size='2' maxlength='2' value='$track$rownumlength2'>:<input type='text' name='track$rownumlength3' size='2' maxlength='2' value='$track$rownumlength3'><br>";
${"track$rownumname"} = $trackname;
$rownum++;
}

You can see the top part is pretty much what you told me to put in. Whatever is different was not the first time I tried it. I tried making some changes. After hitting submit the page it is actioned for does this

$rownum = 1;
while ($rownum <= $tracknum)
					{
					$query = "insert into tracks (artist, title, trackname, trackpos, tracklength)
					 VALUES ('$userrow[bandname]', '$albtitle', '".$track.$iname."', '$rownum', '$track$rownumlength1:track$rownumlength2:track$rownumlength3')";

	}

This should clear up what I wanted to do. Thanks for the help

[LordShryku]

It looks like our coding styles colided right here

value='.\"$track\".$iname."'

I use double quotes, you use singe. Lets try to re-write this a bit...

$rownum = 1; 
while ($rownum <= $tracknum) 
{ 

echo " 
$rownum) Name: <input type='text' name='track".$iname."' size='30' maxlength='50' value='".$track.$iname."'> 
Length: <input type='text' name='track".$rownumlength1."' size='2' maxlength='2' value='".$track.$rownumlength1."'>:<input type='text' name='track".$rownumlength2."' size='2' maxlength='2' value='".$track$rownumlength2."'>:<input type='text' name='track".$rownumlength3."' size='2' maxlength='2' value='".$track.$rownumlength3."'><br>"; 
${"track$rownumname"} = $trackname; 
$rownum++; 
}

Try that instead. It's your single quotes, but it removes the variable from the string so they will echo right.

[Shawazi]

I'm about to try that but $i is really $rownum. I had used $i just to make it easier to explain in the first post. I hope this new code works...

[Shawazi]

I did your code and got
Parse error: parse error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ',' or ';'

$rownum = 1;  

while ($rownum <= $tracknum)  

{  

echo "  

$rownum) Name: <input type='text' name='track".$iname."' size='30' maxlength='50' value='".$track.$iname."'> 
Length: <input type='text' name='track".$rownumlength1."' size='2' maxlength='2' value='".$track.$rownumlength1."'>:<input type='text' name='track".$rownumlength2."' size='2' maxlength='2' value='".$track$rownumlength2."'>:<input type='text' name='track".$rownumlength3."' size='2' maxlength='2' value='".$track.$rownumlength3."'><br>";  

$rownum++;  

}

I took out the last line because I didn't need that. I forgot to take it out. It was just another thing I was trying to get this to work

[HalfaBee]

I think you need variable variables for this

$tn = "{$track}{$i}name";

echo $$tn;

HalfaBee

[Shawazi]

here is a chunk

$tn = "{$track}{$rownum}name"; 
echo "
$rownum) Name track$rownumname: <input type='text' name='track$rownumname' size='30' maxlength='50' value='$$tn'> 

When I do that I get $TN being equal to
$1name

before i put anything in the form and then after i change it, it goes back to that

[HalfaBee]

You need to put $$tn in {} if you want to echo it in a string.

echo "The variable $tn equals {$$tn}";

HalfaBee

[HalfaBee]

A simple example.

<?

$track = 'bus';
$rownum = 1;
$bus1name = "hello";

$tn = "{$track}{$rownum}name";
echo "
$rownum) Name track$rownumname:
<input type='text' name='track{$rownum}name' size='30' maxlength='50' value='{$$tn}'> ";

?>

Halfabee

[Shawazi]

$tn = "{$track}{$rownum}name"; 
echo "
$rownum) Name track$rownumname: <input type='text' name='track".$rownum."name' size='30' maxlength='50' value='$$tn'> 
Length: <input type='text' name='track$rownumlength1' size='2' maxlength='2' value='$track$rownumlength1'>:<input type='text' name='track$rownumlength2' size='2' maxlength='2' value='$track$rownumlength2'>:<input type='text' name='track$rownumlength3' size='2' maxlength='2' value='$track$rownumlength3'><br>";
${"track$rownumname"} = $trackname;
echo "<br>The TN is {$$tn}";
$rownum++;
}

I did what you said and the field still starts out saying
$1name (or 2name if its the second row) meanwhile it will say
"THE TN is " and it leaves it blank i tried making it value='{TNN}' that did not work either. So the value part is still messed up. As far as the name='' part goes I can just use what Lord said.

[Shawazi]

$track is not a variable in this code

$track1name should be a variable where 1 was $rownum

[Shawazi]

$track = 'track';
$tn = "{$track}{$rownum}name"; 
$trackname = "track".$rownum."name";
echo "
$rownum) Name track$rownumname: <input type='text' name='trackname' size='30' maxlength='50' value='$$tn'> 
Length: <input type='text' name='track$rownumlength1' size='2' maxlength='2' value='$track$rownumlength1'>:<input type='text' name='track$rownumlength2' size='2' maxlength='2' value='$track$rownumlength2'>:<input type='text' name='track$rownumlength3' size='2' maxlength='2' value='$track$rownumlength3'><br>";
${"track$rownumname"} = $trackname;
echo "<br>The TN is {$$tn}<br>NAME is $trackname";
$rownum++;

Field says : $track1name

THE TN is still blank
NAME is track1name

So basically the name is working right as the variable $trackname. $trackname gives track1name. We want to make track1name a variable $track1name. Now we thought that worked but no it is being literal. I changed value='$$tn' to value=\"$$tn\" just to be sure and that did not work either.

[Bijan]

Why don't you use an array instead of this ugly form of mingled variables?! You can simply use a 2d or 3d array and then get it in your form retrieval page.

[Shawazi]

I never have really needed arrays (belive it or not) so I haven't tried them. I don't know them very well in any case. But I guess I'll shoot for it tomorrow. It's 3AM here and my roomate is sleeping so I don't wanna start readin a book ha

[HalfaBee]

It won't have a value until the form is submitted.

Halfabee

[Shawazi]

Yeah I know. I posted earlier that I hit submit then back and refresh. It shows all the values that I had entered.