PHP create new array by slicing

Question

I have an array type of 'months' => 'txt for ppl'

$timeArr = [
            '1' => '1 месяц',
            '3' => '3 месяца',
            '6' => '6 месяцев',
            '9' => '9 месяцев',
            '12' => '1 год',
            '18' => '1,5 года',
            '24' => '2 года',
            '36' => '3 года',
            '48' => '4 года',
            '60' => '5 лет',
            '72' => '6 лет',
            '84' => '7 лет',
            '120' => '10 лет',
            '180' => '15 лет',
            '240' => '20 лет',
            '300' => '25 лет',
            '360' => '30 лет',
        ];

My idea is make a function to return only period I want. For example, function period($from, $to): period(240, 360) will return array of key=> values from key '240' to key '360'. But I have no idea how to make it without loops.

in your array those keys are numeric key or string ? and it's order or unorder ? — JYoThI
– JYoThI, Commented Jun 27, 2017 at 3:58

Suman Singh · Accepted Answer · 2017-06-27 04:00:43Z

1

Please try below:

function period($array, $keys)
{
    return array_intersect_key($array, array_flip($keys));
}

$keys = array( '240', '300' );
$results = period($timeArr, $keys);
print_r($results);

answered Jun 27, 2017 at 4:00

Suman Singh

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LF-DevJourney · Accepted Answer · 2017-06-27 04:28:33Z

1

You can use array_slice like this, and you can check the live demo here.

$indexes = array_flip(array_keys($timeArr));
$results = array_slice($timeArr, $indexes[240], $indexes[360]);

answered Jun 27, 2017 at 4:28

LF-DevJourney

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Comments

Jaydeep Mor · Accepted Answer · 2017-06-27 04:42:00Z

Try below code for get range array by key.

It returns range value and it's key from $timeArr.

PHP

<?php
function period($from,$to){
    $timeArr = [
        '1' => '1 месяц',
        '3' => '3 месяца',
        '6' => '6 месяцев',
        '9' => '9 месяцев',
        '12' => '1 год',
        '18' => '1,5 года',
        '24' => '2 года',
        '36' => '3 года',
        '48' => '4 года',
        '60' => '5 лет',
        '72' => '6 лет',
        '84' => '7 лет',
        '120' => '10 лет',
        '180' => '15 лет',
        '240' => '20 лет',
        '300' => '25 лет',
        '360' => '30 лет',
    ];
    $newArr = array();
    $range = range($from,$to);
    $newArr = array_intersect_key($timeArr, array_flip($range));
    return $newArr;
}
?>

Usage

<?php
    $newArray = period(240,360);
    echo "<pre>";
    print_r($newArray);
?>

Output

Array
(
    [240] => 20 лет
    [300] => 25 лет
    [360] => 30 лет
)

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