CFLib.org – Common Function Library Project

Description:
Applies a filter to an array (based on array_filter from PHP). For example, taking an array of numbers, you can write a filter UDF that will remove all numbers less than 10.

Return Values:
Returns an array.

Example:

<cfscript>
function noBerry(str) {
    return not findNoCase("berry",str);
}
</cfscript>

<cfset fruit = listToArray("apple,banana,orange,pear,lemon,lime,cherry,strawberry,blueberry")>
<cfdump var="#arrayFilter(fruit,noBerry)#">

Parameters:

Full UDF Source:

/**
 * Applies a filter to an array.
 * 
 * @param array      Array to modify. (Required)
 * @param filter      The UDF, NOT THE NAME, but the UDF to use as a filter. (Required)
 * @return Returns an array. 
 * @author Raymond Camden (ray@camdenfamily.com) 
 * @version 1, March 31, 2003 
 */
function arrayFilter(array,filter) {
    var newA = arrayNew(1);
    var i = 1;
    
    for(;i lte arrayLen(array); i=i+1) {
        if(filter(array[i])) arrayAppend(newA,array[i]);
    }
    
    return newA;
}