收pop3邮件的PHP类
[code]pop3.php
class pop3_class
{
var $hostname="";
var $port=110;
var $connection=0;
var $state="DISCONNECTED";
var $greeting="";
var $must_update=0;
var $debug=0;
Function OutputDebug($message)
{
echo $message,"
";
}
Function GetLine()
{
for($line="";;)
{
if(feof($this->connection))
return(0);
$line.=fgets($this->connection,100);
$length=strlen($line);
if($length>=2 && substr($line,$length-2,2)=="
")
{
$line=substr($line,0,$length-2);
if($this->debug)
$this->OutputDebug("< $line");
return($line);
}
}
}
Function PutLine($line)
{
if($this->debug)
$this->OutputDebug("> $line");
return(fputs($this->connection,"$line
"));
}
Function OpenConnection()
{
if($this->hostname=="")
return("2 it was not specified a valid hostname");
switch(($this->connection=fsockopen($this->hostname,$this->port)))
{
case -3:
return("-3 socket could not be created");
case -4:
return("-4 dns lookup on hostname "$hostname" failed");
case -5:
return("-5 connection refused or timed out");
case -6:
return("-6 fdopen() call failed");
case -7:
return("-7 setvbuf() call failed");
default:
return("");
}
}
Function CloseConnection()
{
if($this->connection!=0)
{
fclose($this->connection);
$this->connection=0;
}
}
Function Open()
{
if($this->state!="DISCONNECTED")
return("1 a connection is already opened");
if(($error=$this->OpenConnection())!="")
return($error);
$this->greeting=$this->GetLine();
if(GetType($this->greeting)!="string"
|| strtok($this->greeting," ")!="+OK")
{
$this->CloseConnection();
return("3 POP3 server greeting was not found");
}
$this->greeting=strtok("
");
$this->must_update=0;
$this->state="AUTHORIZATION";
return("");
}
Function Close()
{
if($this->state=="DISCONNECTED")
return("no connection was opened");
if($this->must_update)
{
if($this->PutLine("QUIT")==0)
return("Could not send the QUIT command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get quit command response");
if(strtok($response," ")!="+OK")
return("Could not quit the connection: ".strtok("
"));
}
$this->CloseConnection();
$this->state="DISCONNECTED";
return("");
}
Function Login($user,$password,$apop)
{
if($this->state!="AUTHORIZATION")
return("connection is not in AUTHORIZATION state");
if($apop)
{
if($this->PutLine("APOP $user ".md5($this->greeting.$password))==0)
return("Could not send the APOP command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get APOP login command response");
if(strtok($response," ")!="+OK")
return("APOP login failed: ".strtok("
"));
}
else
{
if($this->PutLine("USER $user")==0)
return("Could not send the USER command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get user login entry response");
if(strtok($response," ")!="+OK")
return("User error: ".strtok("
"));
if($this->PutLine("PASS $password")==0)
return("Could not send the PASS command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get login password entry response");
if(strtok($response," ")!="+OK")
return("Password error: ".strtok("
"));
}
$this->state="TRANSACTION";
return("");
}
/* Statistics method - pass references to variables to hold the number of
messages in the mail box and the size that they take in bytes. */
Function Statistics($messages,$size)
{
if($this->state!="TRANSACTION")
return("connection is not in TRANSACTION state");
if($this->PutLine("STAT")==0)
return("Could not send the STAT command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get the statistics command response");
if(strtok($response," ")!="+OK")
return("Could not get the statistics: ".strtok("
"));
$messages=strtok(" ");
$size=strtok(" ");
return("");
}
Function ListMessages($message,$unique_id)
{
if($this->state!="TRANSACTION")
return("connection is not in TRANSACTION state");
if($unique_id)
$list_command="UIDL";
else
$list_command="LIST";
if($this->PutLine("$list_command $message")==0)
return("Could not send the $list_command command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get message list command response");
if(strtok($response," ")!="+OK")
return("Could not get the message listing: ".strtok("
"));
if($message=="")
{
for($messages=array();;)
{
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get message list response");
if($response==".")
break;
$message=intval(strtok($response," "));
if($unique_id)
$messages[$message]=strtok(" ");
else
$messages[$message]=intval(strtok(" "));
}
return($messages);
}
else
{
$message=intval(strtok(" "));
return(intval(strtok(" ")));
}
}
Function RetrieveMessage($message,$headers,$body,$lines)
{
if($this->state!="TRANSACTION")
return("connection is not in TRANSACTION state");
if($lines<0)
{
$command="RETR";
$arguments="$message";
}
else
{
$command="TOP";
$arguments="$message $lines";
}
if($this->PutLine("$command $arguments")==0)
return("Could not send the $command command");
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not get message retrieval command response");
if(strtok($response," ")!="+OK")
return("Could not retrieve the message: ".strtok("
"));
for($headers=$body=array(),$line=0;;$line++)
{
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not retrieve the message");
switch($response)
{
case ".":
return("");
case "":
break 2;
default:
if(substr($response,0,1)==".")
$response=substr($response,1,strlen($response)-1);
break;
}
$headers[$line]=$response;
}
for($line=0;;$line++)
{
$response=$this->GetLine();
if(GetType($response)!="string")
return("Could not retrieve the message");
switch($response)
{
case ".":
return("");
default:
if(substr($response,0,1)==".")
$response=substr($response,1,strlen($response)-1);
break;
}
$body[$line]=$response;
}
return("");
}
};
?>
例子:
require("pop3.php");
$user="user";
$password="passwd";
$apop=0;
$pop3_connection=new pop3_class;
$pop3_connection->hostname="mail.xiaocui.com";
if(($error=$pop3_connection->Open())=="")
{
echo "
Connected to the POP3 server "$pop3_connection->hostname".
";
if(($error=$pop3_connection->Login($user,$password,$apop))=="")
{
echo "
User "$user" logged in.
";
if(($error=$pop3_connection->Statistics(&$messages,&$size))=="")
{
echo "
There are $messages messages in the mail box with a total of $size bytes.
";
$result=$pop3_connection->ListMessages("",0);
if(GetType($result)=="array")
{
for(Reset($result),$message=0;$message echo "
Message ",Key($result)," - ",$result[Key($result)]," bytes.
";
if($messages>0)
{
if(($error=$pop3_connection->RetrieveMessage(1,&$headers,&$body,-1))=="")
{
echo "
Message 1:
---Message headers starts below---
";
for($line=0;$line echo "
",HtmlSpecialChars($headers[$line]),"
";
echo "
---Message headers ends above---
---Message body starts below---
";
for($line=0;$line echo "
",HtmlSpecialChars($body[$line]),"
";
echo "
---Message body ends above---
";
}
}
if($error==""&&($error=$pop3_connection->Close())=="")
echo "
Disconnected from the POP3 server "$pop3_connection->hostname".
";
}
else
$error=$result;
}
}
}
if($error!="")
echo "
Error: ",HtmlSpecialChars($error),"
";
?>
[/code]
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