Anzeige/Entfernen von Byte Order Marks (BOM)

[Jörg Reinholz]

Moin!

Das Problem mit den BOM haben offenbar viele. Deshalb als Skript für alle:

<?php
function rmBOM($str, $replacment='') {
   
    # source: https://en.wikipedia.org/wiki/Byte_order_mark

    $boms=array(
        urldecode('%EF%BB%BF'),       #UTF-8
        urldecode('%FE%FF'),          #UTF-16 (BE)
        urldecode('%FF%FE'),          #UTF-16 (LE)
        urldecode('00%00%FE%FF'),     #UTF-32 (BE)
        urldecode('FF%FE%00%00'),     #UTF-32 (LE)
        urldecode('2B%2F%76%38'),     #UTF-7
        urldecode('2B%2F%76%39'),     #UTF-7
        urldecode('2B%2F%76%2B'),     #UTF-7
        urldecode('2B%2F%76%2F'),     #UTF-7
        urldecode('2B%2F%76%38%2D'),  #UTF-7
        urldecode('%F7%64%4C'),       #UTF-1
        urldecode('%DD%73%66%73'),    #UTF-EBCDIC
        urldecode('%0E%FE%FF'),       #SCSU
        urldecode('%FB%EE%28'),       #BOCU-1
        urldecode('%84%31%95%33')     #GB-18030
    );
    return str_replace($boms, $replacment, $str);
}

#/* Test:
$s='<[e-mail]%EF%BB%BF>';
$schadhaft=urldecode($s);

echo 'Schadhaft: ', $schadhaft, "\n";
echo 'Anzeige:   ', rmBOM($schadhaft, '#BOM!#'), "\n";
echo 'Bereinigt: ', rmBOM($schadhaft),  "\n";
#*/

Jörg Reinholz