preg & callback: Why slashes?

Is there any logical reason why all double quotes within matches are slashed when using preg_replace with the e-modifier / callback function? Please look at this code snippet: ------------------------- <?php function test($str) { return $str; } $match = preg_replace('/.*/e', "test('\\0')", 'bla? "blah!"'); // will print: bla? \"blah!\" // --> the string passed to test() is slashed - why? print $match; ?> ------------------------- Now what's the use of those slashes? It simply corrupts the string if I don't remove the slashes in the test() function. Thank you Sam -- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.net