public function big_integer_add($num1,$num2){
$str1 = strval($num1);
$str2 = strval($num2);
$length1 = strlen($str1);
$length2 = strlen($str2);
$length = $length1>$length2?$length1:$length2;
$result = '';
$flag = 0;
while($length--){
$m = 0;
$n = 0;
if($length1>0)
$m = $str1[--$length1];
if($length2>0)
$n = $str2[--$length2];
$tmp = $m+$n+$flag;
$flag = $tmp/10;
$result = ($tmp%10).$result;
}
return doubleval($result);//或者直接返回字符串
}
$a = 9874651230987465123098746512309874651230987465123098746512309874651230987465123098746512309874651230; $b = 9874651230987465123098746512309874651230987465123098746512309874651230987465123098746512309874651230; dump($this->big_integer_add($a,$b)); echo "
"; dump($a+$b) ;
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/3598/viewspace-2803241/ ，如需转载，请注明出处，否则将追究法律责任。
上一篇：
ali 媒体转码签名生成-php
下一篇：
如何提高 Java 中锁的性能
请登录后发表评论
登录
全部评论
