php字符串转数字 (int)和intval对比

$str = "10" intval(str) = 10 (int)str = 10 $str_1 = "10.5" intval(str_1) = 10 (int)str = 10 $str_2 = "1,000" intval(str_2) = 1 (int)str = 1 $int = 10 …