Counting a particular variable in an Array

Question

I have this following Array. Here, i want to count the variable fraction which has the value 1. Based on the no.of.occurances, i want to do some operations. The one way i know is, to loop the array by using foreach and put an incrementor to identify how many fraction has the value 1. But i want to know is there any easier way than the above one?

could anyone suggest me?

Array
(
    [0] => Array
        (
            [answer] => <p>
    Quiz Test Interoperability</p>

            [feedback] => 
            [fraction] => 0
        )

    [1] => Array
        (
            [answer] => <p>
    Quiz Test Interrelationship</p>

            [feedback] => <br />

            [fraction] => 0
        )

    [2] => Array
        (
            [answer] => <p>
    Quiz Team Interoperability</p>

            [feedback] => <br />

            [fraction] => 0
        )

    [3] => Array
        (
            [answer] => <p>
    Queation Test Interoperability</p>

            [feedback] => <br />

            [fraction] => 1
        )

)

Till Helge · Accepted Answer · 2013-02-25 11:59:09Z

4

You can use array_reduce():

<?php
function countFractionIs1 ($element) {
   return ($element['fraction'] == 1) ? 1 : 0;
}

$count = array_reduce($yourarray, "countFractionIs1", 0);

edited Feb 25, 2013 at 11:59

answered Feb 25, 2013 at 11:40

Till Helge

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