What could be the Regular Expression for Validating a user's name?

[rizwan6feb]

This may be very simple, but how can i check, whether a user's name (firstname or lastname) is valid or not? A user's name should contain only alphabets

[hsriat]

This may be very simple, but how can i check, whether a user's name (firstname or lastname) is valid or not? A user's name should contain only alphabets

Use preg_match to match your user name with the required expression.
In your case it is[php]if (preg_match("/^[a-zA-Z]+$/", $user_name))
{
//matching
}
else
{
//not matching
}[/php]
Regular Expression Details

[vikas1111]

Hi
Also check for blank space entry.. Instead of name i can enter blank space also,, Checking for only alphabets woth work properly..

[hsriat]

"/^[a-zA-Z\s]+$/"

See if this works.

[dlite922]

Hi
Also check for blank space entry.. Instead of name i can enter blank space also,, Checking for only alphabets woth work properly..

Just Use Trim() and check to see if its blank if its not blank, then check it against the regex [a-zA-Z\s?]+

Good luck,


Dan

[Markus]

Just Use Trim() and check to see if its blank if its not blank, then check it against the regex [a-zA-Z\s?]+

Good luck,


Dan

What if it's in the middle of the string? Trim() clears the beggining and end, no?

trim — Strip whitespace (or other characters) from the beginning and end of a string

The regex:
[php]
if(preg_match('/[^a-zA-Z]/', $string)
{
// bad name
}
else
{
// good name
}
[/php]
Should do it.