Strip...

[Anon]

I have an variable like this:
$var = "position x=70";
What I want to get out of this is 70.

I want to remove everything from the string which is not a number. How do I do this?

I've tried to typecast but it does not work.

[khaine]

two ways you could do this.

first you could explode the string based on the = sign.

$bits=explode("=", $string);

$bits[0] would have 'position x' in it and $bits[1] would have '70' in it.

Or you could parse the string.

$string="x=70";
parse_str($string);
echo $x;

Mark.

[Anon]

I have not tried this, just find out the right syntax for all steps, but logically it should work out this way.

1. Read every character of your string in a
   variable.
2. Convert it into ASCII equivalent.
3. Check whether the ASCII values falls between numeric equivalent of 0-9.
4. if yes, concatenate in the other variable that will only store numeric protion.
5. if no, skip that character and check next character
6. loop from 2-5 above until the length of the string.

[[deleted]]

I guess you spent a lot of time writing in assembly? :-)

[jbauer23]

This is a simple regular expression problem. The following code will remove all characters from a string that are not numbers.

$var = ereg_replace("[^{0-9]","",$var);}

[[deleted]]

Nope. That might work for whole numbers, but not for fractions.