question about validation using php

[runway27]

i am using php in order to validate a form where users register. please help me to solve the following validations.

1. name can have spaces. ex= john smith
presently the validation i am using is if( $fname == "" || !eregi("^[a-zA-Z_]+$", $fname) )
i need the syntax which would accept a-zA-Z WITH A SPACE IN BETWEEN NAMES ex= john smith

2. text can have spaces and special characters ex= ref 100/abcd
presently the validation i am using is if( $depositnumber == "" || !eregi("^[a-zA-Z0-9_]+$", $depositnumber) )
i need the syntax which would accept a-zA-Z0-9 WITH A SPACE IN BETWEEN AND SPECIAL CHARACTERS ex= ref 100/abcd

3. spaces in numbers. ex= 123 4567
presently the validation i am using is if( $phonenumber == "" || !eregi("^[0-9]+$", $phonenumber) )
i need the syntax which would accept 0-9 WITH A SPACE IN BETWEEN ex= 123 4567

4. in case of [a-zA-Z0-9_] if i remove the "_" after 9 will it have a negative impact or is this a syntax due to which i

should i leave the "_" as part of [a-zA-Z0-9_]

5. using stripslashes() function
due to the above validation there is no way a user can enter special characters which could lead to sql injection. inspite of

this should i still use stripslashes to be on the safe side.

please provide the exact syntax for the above validations to works as specified for different scenarios.

thanks.

[coolsti]

I enjoy helping others with tips on how to solve problems, when there is something that they do not understand or do not know how to go about getting started with. But from the sounds of your post it seems like what you are looking for is for someone to perform a programming task for you.

I certainly would be happy to for my usual hourly price.

Steve, Denmark