str_replace gives wrong result

Question

I got data like this: "ӘІҢҒҮҰҚӨҺ". hexing this data to this: d398d086d2a2d292d2aed2b0d29ad3a8d2ba then adding "\'" for *.rtf format: \'d3\'8d\'86\'2a\'d2\'2d\'ae\'2b\'d2\'ad\'a8\'2b

and then I must get somethingl ike this: \u1179\'3f\u1240\'3f\u1186\'3f...

but str_replace replaces only slashes Q_Q.

Any suggestions?

here is full code:

<?
function strToHex($string)
{
    $hex='';
    for ($i=0; $i < strlen($string); $i++)
    {
        $hex .= dechex(ord($string[$i]));
    }
    return $hex;
}

function extra($txt) {
    $output_arr = array (
        //
        "\\u1179\\'3f","\\u1240\\'3f","\\u1186\\'3f","\\u1170\\'3f","\\u1198\\'3f","\\u1200\\'3f","\\u1178\\'3f","\\u1256\\'3f","\\u1210\\'3f"
    );

    $input_arr = array (
        // 
        "\\'d3\\'98","\\'d0\\'86","\\'d2\\'a2","\\'d2\\'92","\\'d2\\'ae","\\'d2\\'b0","\\'d2\\'9a","\\'d3\\'a8","\\'d2\\'ba"
    );

    echo "<br>";
    echo "data: ".$txt."<br>";
    $txt = strtohex($txt);
    echo "hex: ".$txt."<br>";
    for ($ii=0; $ii < strlen($txt); $ii++) {
        //
        if (strlen($tm1)<2) {
            //
            $tm1.=substr($txt,$ii,1);
        }
        else
            {
            //
            $ret.="\\'".$tm1;
            $tm1='';
        }

    }
    echo "RET:[".$ret."]<br>";
    $ret = str_replace($input_arr,$output_arr,$ret);
    echo "RETREP:[".$ret."]<br>";
    return $ret;
}

extra("ӘІҢҒҮҰҚӨҺ");
?>

check http://stackoverflow.com/questions/1451144/php-multi-byte-str-replace — thwd, Sep 12 '11 at 08:32
@Tom, no. this is not for me, these letters was taken from mysql db. they in unicode(utf8). so I'm trying to compare hexed values and to replace it using rtf spec format. — Anthony Dev, Sep 12 '11 at 08:42
Guys... The string only contains characters [0-9a-f\\'], what would a multi-byte function achieve in such a situation? — Victor Nicollet, Sep 13 '11 at 14:37

score 0 · Answer 1 · answered Sep 13 '11 at 14:47

I see no immediate problem with your code, other than the fact that the string you use as an example contains none of the sequences in $input_arr. I added manually \'d3\'8d to that list, and the replacement worked correctly, so this might be the source of your problem.

You appear to be converting an UTF-8 to an ASCII representation that escapes Unicode characters as \u{code}\'3f, so you might be able to leverage the utf8tohtml function described in this comment, which escapes characters in the &#{code}; format.

I already found my mistake and solved the problem. :) oh, and thanks for utf8tohtml. — Anthony Dev, Sep 14 '11 at 11:16

score 0 · Accepted Answer · answered Sep 14 '11 at 11:14

I was getting wrong results because of "if" logic in "for" loop. Here is the right one:

for ($ii=0; $ii < strlen($txt); $ii++) {
    //
    if (strlen($tm1)<2) {
        //
        $tm1.=substr($txt,$ii,1);
    }
    if (strlen($tm1)==2) {
        //
        $ret.="\\'".$tm1;
        $tm1='';
    }

}

In old version (question) this thing was skipping every third char of the main string. So now it works OK.

str_replace gives wrong result

2 Answers2