Eval string for wordpress "in_category" workaround outside the loop
- by fimbim
In Wordpress you can´t use "in_category" outside the loop, so I created a function that gives me all the categories my article is in and create a "is_category" if statement out of it.
I put my function in my "functions.php":
function inCatAlt($catID){
$allCats = get_categories('child_of='.$catID);
$childCats = 'is_category('.$catID.') ';
foreach($allCats as $childCat){
$childCats.= 'or is_category('.$childCat->cat_ID.') ';
};
$allchildCats = trim(trim($childCats, 'or '));
return $allchildCats;
}
and call this in my sidebar, single and so on:
echo inCatAlt(13);
which gives me this as a string back:
"is_category(13) or is_category(16) or is_category(15)"
This is exactly what I needed, but now I want to evaluate the string to use it in a if function like this:
if(eval(inCatAlt(13))){
do something
}
But it doesn´t work.
Do I evaluate it wrong or what is the problem?
If I copy paste the output into the if function it works fine…
Thanks in advanced guys. Is my first time asking something here. I´m curious :)
