PHP正则表达式名称不以空格开头

Question

I need a regular expression for my name which should contain A-Za-Z\\s and not start with space.

if (preg_match("/[[[:space:]]A-Za-z\s] | [^(A-Za-z\s)]/",$city  )) {
         error
}

but I does not work. I need help. thanks

Answer 1

preg_match("/^[A-Za-z][A-Za-z\s]*$/", $city)

This breaks down to:

1. Match anything of [A-Za-z]
2. then match anything of [A-Za-z\\s] arbitrarily often.

Answer 2

I'd do:

if (preg_match("/^[A-Za-z][A-Za-z\s]+$/", $city)) {
    // OK
}