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Looping through variables?


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I have a lot of variables that will either be 1 or 0.  I want to loop through them, putting all that equal 1 into a list.. it would look something like this:



And so on.


Is there any way of doing this?  All of the variables have different names, which is the problem I am having when coming up with this.

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Well, part of your post makes no sense. If you put the variables as list items where the variables equal 1, then you will just have a list of 1's. Do you want the variable name as the list item?


I would suggest changing the variables to array elements.



$vars['var1'] = 0;
$vars['var2'] = 1;
$vars['var3'] = 0;
$vars['var4'] = 1;

echo "<ul>";

foreach ($vars as $varname => $varValue) {
  if ($varValue==1) {
    echo "<li>$varName</li>";

echo "</ul>";


The output would look like this:

  • var2
  • var4

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use an array to hold your variables,


$arr = array("foo" => 1, "boo" => 0, "banana" => 0, "apple" => 1);

$output = "<ul>";
foreach($arr as $key => $val)
    if($val == 1)
        $output .= "<li>{$key}</li>\n";
echo $output."</ul>";




 * foo
* apple


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