Regular expression for password

[Guest]

Hi!
I need the password matching:
1. at least 6 chars
2. only English chars [A-z] or numbers (no spaces and no other chars)

What is the regular expression syntax for that?

Thanks in advance.

 

[marss]

Hi!
I need the password matching:
1. at least 6 chars
2. only English chars [A-z] or numbers (no spaces and no other chars)

What is the regular expression syntax for that?

Thanks in advance.

[A-Za-z0-9]{6,}

 

[Guest]

Thanks.
But can I write so: [A-z0-9]{6,} ?

 

[Jonathan Wood]

No, that allows additional characters (the ones between 'Z' and 'a').