Calculation from specific array values in PHP

Question

i have the following array written in PHP. I need a way to print values by name, and if possible, do calculations with specific values (by looping through).

[MAIN] => Array
    (
        [FIRST] => Array
            (
                [0] => 500
                [1] => 1000
                [2] => 1500
            )

        [SECOND] => Array
            (
                [Name] => Nick
                [State] => None

            )

    )

For example, by using the array above i'd like to print only the NAME of the "SECOND" array but without looping through every index (without using an index at all), and add each value of the "FIRST" array by looping throu them.

Thank you!

Thank you sir! That did the job! And if i may ask, how can i do math with the values of "FIRST" array? Thanks again!!! — John Doe
– John Doe, Commented Jan 19, 2014 at 14:00

Victor Bocharsky · Accepted Answer · 2014-01-19 14:03:31Z

4

$result = 0;
foreach ($array['MAIN']['FIRST'] as $val) {
    $result += $val;
}
echo $result;

answered Jan 19, 2014 at 14:03

Victor Bocharsky

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Comments

ddoor · Accepted Answer · 2014-01-19 14:03:44Z

2

The first question is like this:

echo $array['MAIN']['SECOND']['Name'];

You have an array of an array of an array so you have to dereference values as such.

The second one would look something like this:

$var = 0;
for($i = 0; $i < 3; $i++) {
    $var += $array['MAIN']['FIRST'][$i];
}
echo $var;

answered Jan 19, 2014 at 14:03

ddoor

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2 Comments

Victor Bocharsky Over a year ago

You type arguments for for cycle, and it's do not work with foreach

ddoor Over a year ago

oops my bad, started with foreach and changed my mind :P

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