subesc

I created a script using it and received no errors.

Hey everyone, I'm studying for my Zend PHP 5 Certification Exam and I came across a question that I was hoping I could get an explanation for. The question lists a few choices and asks which of the choices are valid PHP variables. The options are: [*]@$foo [*]&$variable [*]${0x0} [*]$variable [*]$0x0 I know what the answers are, but I don't know why ${0x0} can be a variable. Doesn't this evaluate to 0? If so, then why would it allow me to create a variable that starts with a number? Is the only way that I can call it using the syntax ${0x0} or is there something else I'm missing? Simply curious. Thanks for the help!