Inserting only unique values into an array

Posted by karl on Stack Overflow See other posts from Stack Overflow or by karl
Published on 2010-03-26T15:47:36Z Indexed on 2010/03/26 15:53 UTC
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php

|

arrays

|

associative-array

I have a set of values that I'm pushing into an array in the order they occur

$valsArray = array(); 

//I process each value from a file (code removed for simplicity) 
//and then add into the array 
$valsArray[] = $val;

How do I turn this into an associative array instead where the value gets inserted (as $key of associative array) only if it doesn't exist. If it does exist increment its count ($value of associative array) by 1. I'm trying to find a more efficient way of handling those values compared to what I'm doing now.

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