Although Microsoft Windows smart quotes are the usual culprits for web developers who need to display strings on devices powered by operating systems other than Windows, there are in fact a number of other Windows-only special characters that can potentially rear their heads every now and then.
Below is a handy list of string replaces (done verbosely for easier reading) that will replace these Windows special characters with accepted alternatives which can more easily be ported across to different systems:
$str = str_replace(chr(130), ',', $str); // baseline single quote
$str = str_replace(chr(131), 'NLG', $str); // florin
$str = str_replace(chr(132), '"', $str); // baseline double quote
$str = str_replace(chr(133), '...', $str); // ellipsis
$str = str_replace(chr(134), '**', $str); // dagger (a second footnote)
$str = str_replace(chr(135), '***', $str); // double dagger (a third footnote)
$str = str_replace(chr(136), '^', $str); // circumflex accent
$str = str_replace(chr(137), 'o/oo', $str); // permile
$str = str_replace(chr(138), 'Sh', $str); // S Hacek
$str = str_replace(chr(139), '<', $str); // left single guillemet
$str = str_replace(chr(140), 'OE', $str); // OE ligature
$str = str_replace(chr(145), "'", $str); // left single quote
$str = str_replace(chr(146), "'", $str); // right single quote
$str = str_replace(chr(147), '"', $str); // left double quote
$str = str_replace(chr(148), '"', $str); // right double quote
$str = str_replace(chr(149), '-', $str); // bullet
$str = str_replace(chr(150), '-', $str); // endash
$str = str_replace(chr(151), '--', $str); // emdash
$str = str_replace(chr(152), '~', $str); // tilde accent
$str = str_replace(chr(153), '(TM)', $str); // trademark ligature
$str = str_replace(chr(154), 'sh', $str); // s Hacek
$str = str_replace(chr(155), '>', $str); // right single guillemet
$str = str_replace(chr(156), 'oe', $str); // oe ligature
$str = str_replace(chr(159), 'Y', $str); // Y Dieresis
Should be useful.