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@ 2013-12-17T11:18:31Z

<?php

function getColor($rgb)
{

$colors = array($BLUE =>0x0a9ef3, $RED => 0xea0a2f, $GREEN => 0x336633);

$largestDiff = 0;
$closestColor = "";
foreach ($colors as $name => $rgbColor)
{
    if (!isset($smallestDiff)) {

        $smallestDiff = colorDiff($rgbColor,$rgb);
        $closestColor = $name;

    } else if (colorDiff($rgbColor,$rgb) < $smallestDiff)
    {
        $smallestDiff = colorDiff($rgbColor,$rgb);
        $closestColor = $name;
    }

}
return $closestColor;

}

function colorDiff($rgb1,$rgb2)
{
// do the math on each tuple

$red1 = hexdec(substr($rgb1,0,2));
$green1 = hexdec(substr($rgb1,2,2));
$blue1 = hexdec(substr($rgb1,4,2));

$red2 = hexdec(substr($rgb2,0,2));
$green2 = hexdec(substr($rgb2,2,2));
$blue2 = hexdec(substr($rgb2,4,2));

return abs($red1 - $red2) + abs($green1 - $green2) + abs($blue1 - $blue2) ;


}

$color = '336633';
$closestmatch = getColor("0x".$color);
echo $closematch;




?>

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined variable $BLUE in /in/6NOca on line 6 Warning: Undefined variable $RED in /in/6NOca on line 6 Warning: Undefined variable $GREEN in /in/6NOca on line 6 Warning: Undefined variable $closematch in /in/6NOca on line 47

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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