Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]

Answer 1

Expanding on someone else's answer:

Using json_encode() requires:

• PHP 5.2.0 or greater
• $myVarValue encoded as UTF-8 (or US-ASCII, of course)

Since UTF-8 supports full Unicode, it should be safe to convert on the fly.

Note that because json_encode escapes forward slashes, even a string that contains will be escaped safely for printing with a script block.