Laravel Collection，用filter方法替换where方法

Question

I have a collection on which I use the where method in order to get only the element that match like this:

myCollection->where('akey', $value);

When I try to transform this with the filter method, it fails:

myCollection->filter(function($value, $key){
   if($key === 'akey' && $value === $aValue)
      return true;
});

I try to use filter because I want to select items in the collection if theirs values are equals to multiple value. (where or Where or Where or Where basically).

Answer 1

I assume that $aValue is defined outside of the filter function, you should pass it to the callback function like this:

myCollection->filter(function($value, $key) use ($aValue) {
  if($key === 'akey' && $value === $aValue)
      return true;
});

-- EDIT --

Based on your example using where I think this should work.

myCollection->filter(function($item) use ($aValue) {
   return $item->aKey === $aValue;
});