function randColor(){
$randColor = '#';
for($i = 1;$i<=6;$i++){
$randColor .= dechex(mt_rand(0, 15));
}
return $randColor;
}


function r(){$r='';for($i=0;$i<6;++$i){$r.=dechex(rand(0,15));}return'#'.$r;}


function randColor(){
        return '#'.dechex(rand(0,16777215));
}


function generate_color(){
  return '#'.str_pad(dechex(mt_rand(0,16777215)),6,"0",0);
}


function f(){return'#'.str_pad(dechex(mt_rand(0,16777215)),6,"0",0);}


function f(){return sprintf("#%06X",mt_rand(0,16777215));}


return '#'.substr(md5(rand()), 0, 6);


return '#'.substr(md5(mt_rand()),-6);


return '#'.substr(uniqid(),-6);


function f() { return 'fff'; }
echo '#' . f();


function f(&$a){$a='fff';}
echo '#'.f($a).$a;


function f(&$a){$a='f';}
echo '#'.f($a).$a.$a.$a.$a.$a.$a;


function a(){}
echo '#FFFFFF';