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@ 2014-10-31T19:27:02Z

<?php

function HSL2RGB($h, $s, $l)
{
        $s = max(0, min($s, 100));
        $l = max(0, min($l, 100));
 
        $s = $s/100;
        $l = $l/100;
        $h = $h >= 360 ? $h % 360 : $h;
 
        $c = ( 1 - abs( 2 * $l - 1 ) ) * $s;
        $x = $c * ( 1 - abs( fmod( ( $h / 60 ), 2 ) - 1 ) );
        $m = $l - ( $c / 2 );
 
        if ( $h < 60 ) {
                $r = $c;
                $g = $x;
                $b = 0;
        } else if ( $h < 120 ) {
                $r = $x;
                $g = $c;
                $b = 0;
        } else if ( $h < 180 ) {
                $r = 0;
                $g = $c;
                $b = $x;
        } else if ( $h < 240 ) {
                $r = 0;
                $g = $x;
                $b = $c;
        } else if ( $h < 300 ) {
                $r = $x;
                $g = 0;
                $b = $c;
        } else {
                $r = $c;
                $g = 0;
                $b = $x;
        }
 
        $r = ( $r + $m ) * 255;
        $g = ( $g + $m ) * 255;
        $b = ( $b + $m  ) * 255;
 
        return [$r, $g, $b];
}

print_r(HSL2RGB(55, 99, 100));

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => 255 [1] => 255 [2] => 255 )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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