Send multiline PHP variable to javascript

[last2kn0]

I would like to send a multiple line php string to a javascript variable but I am unaware how.

I know that javascript multiline strings must be escaped like this:

var string = "this multi \
line string";

I am currently sending php variables to javascript like this:
<?php echo "<script>var string=$phpstring</script>

Also, I bet a big part of this is that this string is PKCS7 encrypted. So I guess the format must be strict? I very new to this and I'm making some assumptions.

This however doesn't allow for multiline assignments. How would I accomplish this?

Thanks in advance!

 

[blu3fire]

Why do you need multiline? In PKCS#7 you cannot use any white space characters (newline character too). BTW can't you make each line as new variable or an element of array?

 

[woiwky]

Try using:

$string = str_replace("\n", "\\n", $string);
echo "<script>var string='$string';</script>";

This should translate newlines to the literal escape characters which JS should then translate back to newlines.

 

[last2kn0]

Well I am unable to determine where the initial problem extends from but the first time I attempted to give javascript a single line version of the encrypted blob, the paypal service couldn't decrypt it.

During debugging this problem, some of my debugging code was preventing me from seeing a solution (I was using getElementsByName("encrypt")[0] and referincing the wrong index as there were multiple fields with the name encrypt).

Anyways, giving javascript a single line encryption blob does work. If anyone needs more specifics on the solution, feel free to inquire and I will give you any details.