How can I pass a PHP variable to javascript?

Question

I want to use a PHP variable as a javascript variable - specifically I want to user the PHP variable session_id(); and use this as a javascript variable.

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Answer 1

That's just fine. Be sure that if the variable you're echoing is a string that you put quotes around it and escape any quotes, newlines, etc. inside it -- e.g., make sure it really gets output as a valid JavaScript string literal. Also, don't forget the var before js_var.