html - Replace non standard characters in php -

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i'm trying replace non standard characters ë,Ë,ç,Ç numeric entities Ë , ' etc ran bit of problem.

when try replace them directly works fine:

$string = "Ë"; $vname = str_replace("Ë","aaaa",$string); echo $vname."<br>";

an aaaa result. when try replace characters string form post doesn't change characters. here example:

<?php if(isset($_post['submit'])) { $string = $_post['title']; if ($string == "Ë") echo "yes"; else echo "no"; $vname = str_replace("Ë","aaaa",$string); echo $vname."<br>"; echo $string; } ?> <form method="post" name="form"> title: <input name="title" type="text" value="" size="20"/> <input name="submit" type="submit" value="submit"/> </form>

any great!!

most characterset wrong. suggest sending following header when outputing html:

<?php header("content-type: text/html; charset=utf-8"); ?>

where charset match charset storing file in.

edit: more information. file store in 1 charset example latin1, while browser interprets html page charset (utf-8 example). when browser sends Ë character, send utf-8 code 0xc38b, while same character 0xcb. can see, these not match.

edit - can update charset via html5 or xhtml:

html5

<meta charset="utf-8"/>

xhtml

<meta http-equiv="content-type" content="text/html; charset=utf-8" />

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