if (preg_match('/(?:\b(?:0[1-9]|[12]\d|3[01])(?:[04][1-9]|[15][0-2])\d{7}\b)\Z/s', $pers_numb)) {
	// Successful match
} else {
	// Match failed
}

>>> pers_numb = '24418023232'
>>> tall_9 = int(pers_numb[8]) % 2
>>> result = "Mann" if tall_9 else "Kvinne"
>>> result
'Kvinne'

def control_numb(pers_numb):
    numberlist_1 = [3, 7, 6, 1, 8, 9, 4, 5, 2, 1]
    numberlist_2 = [5, 4, 3, 2, 7, 6, 5, 4, 3, 2, 1]
    first_k = [int(i) for i in list(pers_numb)[:-1]]
    second_k = [int(i) for i in list(pers_numb)]
    sum_first_k = sum(a*b for a,b in zip(numberlist_1, first_k))
    sum_second_k = sum(a*b for a,b in zip(numberlist_2, second_k))
    if sum_first_k % 11 == 0 and sum_second_k % 11 == 0:
        return True
    return False

>>> pers_numb = '31129956715'
>>> control_numb(pers_numb)
True
>>> pers_numb = '24418023232'
>>> control_numb(pers_numb)
False