Quick Question: How do I strip all alphabetical characters out of a string

[cjbeck71081]

I have a property listing service and I want people to put in the number of square feet for a proerpty, and i want to take thier value and take all the letters out of it, incase they put in 6050 SQFT, or 5405 sf or 34534 s.f., etc.

 

Any ideas?

[Psycho]

var sqrFt = "6050 SQFT";
alert(sqrFt.replace(/[a-z ]/gi, '')); //Output = '6050'

 

Although, if you ONLY want numbers then you would use something like this

sqrFt.replace(/[^0-9]/g, '')

 

Or this if you want to allow a decimal (however you would need an additional step to ensure there are not two decimals)

sqrFt.replace(/[^0-9\.]/g, '')

[kenrbnsn]

That's Javascript, not PHP. This is a PHP forum.

 

Ken

[Psycho]

Oh, hell, my mistake. Pretty similar solution though:

 

PHP Version

$input = "6050 SQFT";

$output = preg_replace('/[^0-9\.]/', '', $input);

echo $output; //6050

 

[DarkWater]

. loses its metacharacter meaning inside of a class. =P  You don't need to escape it.

 

#Regex
/[^0-9.]/