Quick question:
How do I program a PHP script to replace all non-alphanumeric charters within a string, with underscores?

Here is the PHP code that does what you requested.

<?php

$string = "?M&y S8tr~i^ng&;";

$new_string = preg_replace("/[^a-zA-Z]/", "_", $string);

echo $new_string

?>

Hope This Helps

Stan Forrest
Senior Web Developer
Applied Technology Group, Inc.

Yes, this does help, although it is only alphabetic.

Will changing the line to this make it alphanumeric?:

$new_string = preg_replace("/[^a-zA-Z0-9]/", "_", $string);

..oO(AngryCloud)

>Yes, this does help, although it is only alphabetic.
>
>Will changing the line to this make it alphanumeric?:
>
>$new_string = preg_replace("/[^a-zA-Z0-9]/", "_", $string);

Did you try it? ;-)

You could also use this shorter pattern:

/[^a-z\d]/i

Should be the same (\d matches decimals and the /i modifier makes the
entire thing case-insensitive).

Micha

Yes, if you change the line

$new_string = preg_replace("/[^a-zA-Z]/", "_", $string);

to

$new_string = preg_replace("/[^a-zA-Z0-9]/", "_", $string);


It will also replace any numeric character as well.

Stan Forrest
Senior Web Developer
Applied Technology Group, Inc.