Hay, i have a string like this:
干草,我有一个像这样的字符串:
v8gn5.8gnr4nggb58gng.g95h58g.n48fn49t.t8t8t57
I want to strip out all the characters leaving just numbers (and .s)
我想删除只留下数字(和.s)的所有字符
Any ideas how to do this? Is there a function prebuilt?
任何想法如何做到这一点?有预制的功能吗?
thanks
谢谢
4 个解决方案
#1
51
$str = preg_replace('/[^0-9.]+/', '', $str);
replace substrings that do not consist of digits or . with nothing.
替换不包含数字或子句的子串。一无所有。
#2
6
preg_replace('/[^0-9.]/', '', $string);
#3
1
$input = 'some str1ng 234';
$newString = preg_replace("/[^0-9.]/", '', $input);
#4
0
To satisfy my curiosity I asked about the speed of the proposed answers and as shown in preg_replace speed optimisation/ it is (much) faster to use str_replace()
than preg_replace()
.
为了满足我的好奇心,我询问了建议答案的速度,并且如preg_replace速度优化中所示/使用str_replace()比使用preg_replace()更快。
So you might want to use str_replace()
instead.
所以你可能想要使用str_replace()代替。
#1
51
$str = preg_replace('/[^0-9.]+/', '', $str);
replace substrings that do not consist of digits or . with nothing.
替换不包含数字或子句的子串。一无所有。
#2
6
preg_replace('/[^0-9.]/', '', $string);
#3
1
$input = 'some str1ng 234';
$newString = preg_replace("/[^0-9.]/", '', $input);
#4
0
To satisfy my curiosity I asked about the speed of the proposed answers and as shown in preg_replace speed optimisation/ it is (much) faster to use str_replace()
than preg_replace()
.
为了满足我的好奇心,我询问了建议答案的速度,并且如preg_replace速度优化中所示/使用str_replace()比使用preg_replace()更快。
So you might want to use str_replace()
instead.
所以你可能想要使用str_replace()代替。