Returning the integers

[Anon]

Hi,

I need to return the integer in a string, i mean 123box, should return as 123. How can i do this ??

thanks in advance,
gox

[Anon]

$the_int = ereg_replace("[^0-9]", "", $original_str);

This will return "12345" from "12abc345".. it will remove all non-number characters from the string...

if you want to make sure that the numbers are together you can do this:

$the_int = ereg_replace("^{[0-9]{0,}([0-9]{0,})[0-9]{0,}",} "\1", $original_str);

this will return nothig from "12abc345", but it will return "12345" from "12345abc", "abc12345" and "ab12345c"

Hope this helps you...

Andreas

[Anon]

You have several options available to you, and what you do depends on exactly what you want. You say that "123box" should return "123". What about "123box45"? Should it return "123" or "12345"?

If you just want to truncate your number after the first non digit ("123box45" becomes "123"), and you are going to use the results for mathematical functions, you don't really need to worry. That will happen automatically, "123box" + "123" will return "246". If you really want to convert it just to a number (and loose any non number content), you can either add 0 to it or use a regular expression command to strip the non-number content. If you are just trying to display it, you can use sprint("%d"), or print [number] + 0.

-spp

[Anon]

thanks,
what about associative arrays, i have the code below, but i couldn't make it work.

$stage1=ereg_replace("[^{0-9]","\$temps[\1]",$test);}
eval("\$stage2 = \"$stage1\";");

and one more question, what if i want to remove non-integer chars, after the first integer. i mean, -34& should return as -34 , thanks again in advance,
gox