Php matematiksel sınıf

class math_functions {

public function factorial($num,$y = 1) {
for ($i=1;$i <= $num;$i++) { $y *= $i; } return $y; } public function permutation($n,$r) { $result = ($this->factorial($n) / $this->factorial($n-$r));
return $result;
}

public function combination($n,$r) {
$result = ($this->factorial($n) / ($this->factorial($n-$r) * $this->factorial($r)));
return $result;
}

public function average($nums,$total=0) {
if (is_array($nums)) {
$count = count($nums);
for ($i=0;$i <= $count;$i++) { $total += $i; } } return ($total / $count); } public function get_base($num,$us,$y=1) { if ($us == 0) { return 1; } else { for ($i=1;$i <= $us;$i++) { $y *= $num; } } return $y; } public function gauss($n) { $result = ($n * ($n + 1) / 2); return $result; } public function fibonacci($i) { $at = array(); for ($j = 1;$j <= $i;$j++) { if ($j == 1) { $at[] = 1; } else { $ct = count($at)-1; $sn = $at[$ct]; $snd = ($ct-1 > -1) ? $snd = $at[$ct-1] : $snd = 0;
$at[] = $sn+$snd;
}
}
print_r($at);
}

}