I can't find method for converting imap utf7 into utf8.So I have to write several lines of code to solve this issue. May be this could be usefull. Here is no error handling but it could be added.Usage:$imap_utf7 = '[Gmail]/&BBIEMAQ2BD0EPgQ1-';$utf8 = ImapUtf7::decode($imap_utf7);$imap_utf7_2 = ImapUtf7::encode($utf8);[ImapUtf7.php]<?phpclass ImapUtf7 { static $imap_base64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,'; static private function encode_b64imap($s) { $a=0; $al=0; $res=''; $n=strlen($s); for($i=0;$i<$n;$i++) { $a=($a<<8)|ord($s[$i]); $al+=8; for(;$al>=6;$al-=6) $res.=self::$imap_base64[($a>>($al-6))&0x3F]; } if ($al>0) { $res.=self::$imap_base64[($a<<(6-$al))&0x3F]; } return $res; } static private function encode_utf8_char($w) { if ($w&0x80000000) return ''; if ($w&0xFC000000) $n=5; else if ($w&0xFFE00000) $n=4; else if ($w&0xFFFF0000) $n=3; else if ($w&0xFFFFF800) $n=2; else if ($w&0xFFFFFF80) $n=1; else return chr($w); $res=chr(( (255<<(7-$n)) | ($w>>($n*6)) )&255); while(--$n>=0) $res.=chr((($w>>($n*6))&0x3F)|0x80); return $res; } static private function decode_b64imap($s) { $a=0; $al=0; $res=''; $n=strlen($s); for($i=0;$i<$n;$i++) { $k=strpos(self::$imap_base64,$s[$i]); if ($k===FALSE) continue; $a=($a<<6)|$k; $al+=6; if ($al>=8) { $res.=chr(($a>>($al-8))&255);$al-=8; } } $r2=''; $n=strlen($res); for($i=0;$i<$n;$i++) { $c=ord($res[$i]); $i++; if ($i<$n) $c=($c<<8) | ord($res[$i]); $r2.=self::encode_utf8_char($c); } return $r2; } static function encode($s) { $n=strlen($s);$err=0;$buf='';$res=''; for($i=0;$i<$n;) { $x=ord($s[$i++]); if (($x&0x80)==0x00) { $r=$x;$w=0; } else if (($x&0xE0)==0xC0) { $w=1; $r=$x &0x1F; } else if (($x&0xF0)==0xE0) { $w=2; $r=$x &0x0F; } else if (($x&0xF8)==0xF0) { $w=3; $r=$x &0x07; } else if (($x&0xFC)==0xF8) { $w=4; $r=$x &0x03; } else if (($x&0xFE)==0xFC) { $w=5; $r=$x &0x01; } else if (($x&0xC0)==0x80) { $w=0; $r=-1; $err++; } else { $w=0;$r=-2;$err++; } for($k=0;$k<$w && $i<$n; $k++) { $x=ord($s[$i++]); if ($x&0xE0!=0x80) { $err++; } $r=($r<<6)|($x&0x3F); } if ($r<0x20 || $r>0x7E ) { $buf.=chr(($r>>8)&0xFF); $buf.=chr($r&0xFF); } else { if (strlen($buf)) { $res.='&'.self::encode_b64imap($buf).'-'; $buf=''; } if ($r==0x26) { $res.='&-'; } else $res.=chr($r); } } if (strlen($buf)) $res.='&'.self::encode_b64imap($buf).'-'; return $res; } static function decode($s) { $res=''; $n=strlen($s); $h=0; while($h<$n) { $t=strpos($s,'&',$h); if ($t===false) $t=$n; $res.=substr($s,$h,$t-$h); $h=$t+1; if ($h>=$n) break; $t=strpos($s,'-',$h); if ($t===false) $t=$n; $k=$t-$h; if ($k==0) $res.='&'; else $res.=self::decode_b64imap(substr($s,$h,$k)); $h=$t+1; } return $res; }}
