file_put_contents limit fatal error.

#.......................................... 
#       WRITE ID3 TAGS (Write MP3 [v1, v2] 
#.......................................... 
function writeTags($mp3) { 
    $fl = file_get_contents($mp3); 
    $Header = substr($fl,0,10); 
    $tagLen = calcDecTagLen(substr($Header,6,4),$tagLen); 
    $music = substr($fl,$tagLen+10,-128); 
    # Can use input Header for output but you may 
    # wish to change the output filename for testing 
        $tagLen = 1024; # or whatever you like >your actual 
        $Header = substr($Header,0,6).setHexTagLen($tagLen);
        file_put_contents($mp3,mkV2Tag($Header,$tagLen).$music.mkV1Tag());//BUhata veren kisim

}