[PHP] Question about variable variables.

Original Post

Sep 4, 2003 at 1:39 PM

// for loop starts here
global ${$this->var_names[$i]};
${$this->var_names[$i]} = $this->get_information($i);
// end of for loop

Above is the relevant portion of the code I''m having a problem with. Basically, within my class I have two arrays: var_names, which is an array of names for the variables to be set, and another array of arrays which holds the information the variables should be set to. So what I want to do is create a variable from each element in var_names, and then set the newly created variable to one of the elements (using my get_information function). My problem is that while the newly created variables are being set to the correct values, the newly created variables themselves are identified as "Array" instead of the names I am assigning them. Any help would be appreciated, and I''ll gladly provide more information (or hell, the whole source, since this is an opensource project) upon request. Thanks.

fenghus

Sep 5, 2003 at 3:00 AM

As far as i can tell, your code is correct. This might be a more readable variation:

$cnt = count($this->var_names);
for($i=0;$i<$cnt;$i++) {
$vname = $this->var_names[$i];
$$vname = $this->get_information($i);
}

If your variables turn out to be of type Array, either get_information() returns an array or var_names contains entries such as "myvarname[]"

UfoZ

Sep 5, 2003 at 5:29 AM

If you want to set global variables by name, a cleaner approach is using the $GLOBALS array.


$GLOBALS[$this->var_names[$i]] = $this->get_information($i);

Topic Locked