note 52822 deleted from function.in-array by danbrown

Note Submitter: greg at serberus dot co dot uk ---- in_array() doesn't seem to scale very well when the array you are searching becomes large. I often need to use in_array() when building an array of distinct values. The code below seems to scale better (even with the array_flip): $distinct_words = array(); foreach ($article as $word) { $flipped = array_flip($distinct_words); if (!isset($flipped[$word])) $distinct_words[] = $word; } This only works with arrays that have unique values.