Setting dynamic variable names

Tomacco

Hi 🙂

I'm currently using php to connect to a mysql server. Having done so, I was wondering if it was possible to set dynamic variable names, as these variables will be returned to my flash movie.

For example, I'd like the name point_<1,2,...,20>

So would it be possible to do

for($i = 1 ; $i <= 20 ; $i++) {
print ""point_"+$i = $row($i)";
}

sorry for the dodgy syntax, but I have no idea how to put it. I know that echo can also be used , so if it's not possible with print will it be possible with echo?

Thanks in advance

Weedpacket

Yes, you want Variable variables.

Tomacco

Thanks, but I don't see how their hello world example could be put into use the way I have in mind.

I'm trying to get it so that the variables are called point_1, point_2 and so on, is that possible?

Lets say I'm using a for loop, from 1 to 20

for($i = 1; $i <=20 ; $i++) {
<something goes here>
}

what should i put in < > that will generate point_+$i ?

liquorvicar

as weedpacket said you need Variable variables

for($i = 1; $i <=20 ; $i++) {
    $var_name = 'point_'.$i;
    $$var_name = $my_value;
}

although you may be better using an array? (i have no knowledge of Flash).

Tomacco

thanks 🙂 I don't really have a clue about flash either, but this method seems to work for me so I'm not fussed at the moment.

Just one last question with that code,

$varname will be point_1, point_2 and so forth? and setting $$varname will mean that we can give it a value?

If so, if i want to call point_1 and point_2 as variables, would i need to use lets say $newvar = $point_1; ? or would i just call $newvar = point_1;

Thanks

Weedpacket

If $newvar contains the string 'point_1', then $$newvar will contain the value of $point_1, whatever the value of $point_1 is.