cutting parts of a string

[map200uk]

ive got 1/2 of what i was trying sorted out

however i now need to get rid of some of the junk,

i ned to strip the ?? (chr(0) and also the = sign and obviously the tag name

i was thinking of an array containing the field names i.e. Artist 
loop through the array and compare it with the variable, if it is there use str_replace and cut it out?

and same with the = and chr(0)

i was wondering tho is there any way i can do it without needing a number of different statements
[code]Xiph.Org libVorbis I 20020717

7
there are 7 frames present
first comment is 11 bytes long



First comment has the value => ���Album=avvvv12
2nd value is => 12 bytes
Second comment has the value => ���Artist=avril
Third comment has the value => ���Comment=aaa
Fourth comment has the value ���Genre=Alt. Rock
Fith comment has value => ���Title=girlfriend
Sixth comment has the value => ���Tracknumber=2

[/code]

[effigy]

<pre>
<?php
echo $test = chr(0) . chr(0) . 'Artist=They Might Be Giants';
echo '<br>';
echo preg_replace('/^\x0+[^=]+=/', '', $test);
?>
</pre>