CODEWITHSUNDEEP
phparrays
Kiki
Kiki

Reputation: 337

Setup a whole range of PHP if statements for code to pull from

I have a whole bunch of values, that need to correspond to some other values. I've so far setup an array as per the below:

    $result = array(
            1 => 'Red',
            2 => 'Orange',
            3 => 'Yellow',
            4 => 'Green'
    );

I also have a variable, $input that provides a number value.

I need to figure out a way to say something like:

<?php if $input = any of the values in the array, then display its corresponding colour.

My array list will end up having hundreds of values in it, so if there is a much better way to achieve this I'm all ears. It just must be in PHP.

How could this best be achieved? Many thanks for any help in advance!

Upvotes: 0

Views: 35

Answers (1)

Jacob Mulquin
Jacob Mulquin

Reputation: 3608

This can be accomplished quite easily using the isset function:

<?php

$result = array(
    1 => 'Red',
    2 => 'Orange',
    3 => 'Yellow',
    4 => 'Green'
);

$input = 3;

if (isset($result[$input]))
    echo $result[$input] . PHP_EOL;

To find within a range:

$result = [
    '1-2' => 'Red',
    '2-5' => 'Orange',
    '6-9' => 'Yellow',
    '10-20' => 'Green'
];

$input = 8;

foreach ($result as $range => $colour) {
    $split = explode('-', $range);
    if ($input >= $split[0] && $input <= $split[1]) {
        echo $colour . PHP_EOL;
    }
}

Note: This code would blow up if you accidentally had ranges overlap in some way.

Upvotes: 2

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