Finding similarities between images

I've posted here before and got pretty helpful reviews. How does my code look now? To keep it really helpful, I just copied this from the middle of one of my projects.

= $c-2 && $color 

Since your question is about coding style, consider to adhere to PSR-2.

Your color comparision function is bloated. 'If the expression is true, then return true, else, if the expression is false, then return false.' Just return the expression.

return ($color >= $c-2 && $color <= $c+2);

Next, I'd make the literal '2' variable, and add some DocBlock documentation:

/**
 * Check if two color components are similar
 *
 * @param  int  $color  The first color component's value
 * @param  int  $c      The second color component's value
 * @param  int  $dist   The maximum difference for two values to be considered equal
 *
 * @return boolean  True, if the color components are similar.
 */
function colorComp($color, $c, $dist)
{
    return ($color >= $c-$dist && $color <= $c+$dist);
}

StackExchange Code Review Q#25660, answer score: 5