ERRORS when escaping \ while writing files and echoing to screen

[harryusa]

Here I am trying to write a file with a directory path like d:\\$directory1\$directory2\$file.txt
So I have variables in between backslashes and I keep getting errors like:
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /home/4/4/a/2769/2769/public_html/upload/a/thankyou.php on line 69

I would like put the values in a literal string variable like:

$str="d:\\$directory1\$directory2\$file.txt" 

BUT
I believe this might not be possible so in the meantime I have been writing each component to the file one piece at a time :

$str ="d:\\"
fwrite(fp, $str);
$str=$directory1;
fwrite(fp, $str);
$str="\\";
fwrite(fp, $str);

...and so on, that isn't working right either, I keep getting a \\ in the file instead of \ or errors depending on my syntax.

[Dormilich]

you could escape the backslashes or put the backslashes in single quotation marks (ie. they will not be parsed as escape character)

regards