<?php
$colors = array(
array(0,0,0),
array(255,0,0),
array(0,255,0),
array(0,0,255),
array(255,255,0),
array(0,255,255),
array(255,0,255),
array(192,192,192),
array(255,255,255)
);
function colorToLum($r, $g, $b) {
return (0.299 * $r + 0.587 * $g + 0.114 * $g);
}
usort(
$colors,
function ($one, $two) {
$lumOne = colorToLum($one[0], $one[1], $one[2]);
$lumTwo = colorToLum($two[0], $two[1], $two[2]);
return $lumOne - $lumTwo;
}
)
var_dump($colors);
- Output for 5.4.0 - 5.4.22
- Parse error: syntax error, unexpected 'var_dump' (T_STRING) in /in/V0eov on line 28
Process exited with code 255. - Output for 5.3.0 - 5.3.27
- Parse error: syntax error, unexpected T_STRING in /in/V0eov on line 28
Process exited with code 255.
preferences:
184.71 ms | 1386 KiB | 58 Q