PHP uses the SMTP service to send mail first

PHP uses the SMTP service to send mail first

Define (' smtp_status_not_connected ', 1, true);d efine (' smtp_status_connected ', 2, true); class smtp{var $connection;    var $recipients;    var $headers;    var $timeout;    var $errors;    var $status;    var $body;    var $from;    var $host;    var $port;    var $helo;    var $auth;    var $user;    var $pass; /** * parameter is an array * Host SMTP server hosts default: localhost * port default for SMTP server: * HEL     o The name of the Send helo command default: localhost * User name for SMTP server default: null * Pass SMTP server login password default: null value * Timeout Connection time-out default: 5 * @return BOOL */function SMTP ($params = Array ()) {if (!        Defined (' CRLF ')) {define (' CRLF ', "\ r \ n", true);        } $this->timeout = 10;        $this->status = smtp_status_not_connected;        $this->host = ' localhost ';        $this->port = 25;        $this->auth = false;        $this->user = "; $This->pass = ";        $this->errors = Array ();        foreach ($params as $key = + $value) {$this $key = $value;        } $this->helo = $this->host; If the user name is not set, the $this->auth = (' = = $this->user) is not verified?    False:true; } function Connect ($params = Array ()) {if (!isset ($this->status)) {$obj = new SMTP ($PA            Rams);            if ($obj->connect ()) {$obj->status = smtp_status_connected;        } return $obj; } else {if (!empty ($GLOBALS [' _cfg '] [' Smtp_ssl '])) {$this->host = " ssl://".            $this->host;            } $this->connection = @fsockopen ($this->host, $this->port, $errno, $errstr, $this->timeout);                if ($this->connection = = = False) {$this->errors[] = ' Access is denied. ';       return false;     } @socket_set_timeout ($this->connection, 0, 250000);            $greeting = $this->get_data ();                if (Is_resource ($this->connection)) {$this->status = 2; Return $this->auth?            $this->ehlo (): $this->helo ();                } else {log_write ($errstr, __file__, __line__); $this->errors[] = ' Failed to connect to server: '.                $ERRSTR;            return false;         }}}/** * parameter is an array of * recipients receiver's arrays * from Sender's address, also as reply address * headers An array of header information * The body of the message */function send ($params = Array ()) {foreach ($params as $key =&gt ;        $value) {$this, $key = $value;                if ($this->is_connected ()) {//server needs to verify if ($this->auth) {              if (! $this->auth ()) {      return false;            }} $this->mail ($this->from);                    if (Is_array ($this->recipients)) {foreach ($this->recipients as $value) {                $this->rcpt ($value);            }} else {$this->rcpt ($this->recipients);            } if (! $this->data ()) {return false; } $headers = Str_replace (CRLF. '. ', CRLF.            '.. ', Trim (implode (CRLF, $this->headers))); $body = Str_replace (CRLF. '. ', CRLF.            '.. ', $this->body); $body = substr ($body, 0, 1) = = '. '? '.' .            $body: $body;            $this->send_data ($headers);            $this->send_data (");            $this->send_data ($body);            $this->send_data ('. ');        Return (substr ($this->get_data (), 0, 3) = = = ' 250 '); } else {$this-&GT;errors[] = ' not connected! ';        return false;  }} function Helo () {if (Is_resource ($this->connection) and $this->send_data (' helo ' . $this->helo) and substr ($error = $this->get_data (), 0, 3) = = = ' + ') {return true        ;            } else {$this->errors[] = ' HELO command failed, output: '. Trim (substr ($error, 3));        return false;  }} function Ehlo () {if (Is_resource ($this->connection) and $this->send_data (' EHLO ' . $this->helo) and substr ($error = $this->get_data (), 0, 3) = = = ' + ') {return true        ;            } else {$this->errors[] = ' EHLO command failed, output: '. Trim (substr ($error, 3));        return false; }} function auth () {if (Is_resource ($this->connection) and $this->send_data (' auth L     Ogin ')           and substr ($error = $this->get_data (), 0, 3) = = = ' 334 ' and $this->send_data (Base64_encode (                $this->user)//Send username and substr ($error = $this->get_data (), 0, 3) = = = ' 334 ' and $this->send_data (Base64_encode ($this->pass))//Send password and substr ($err        or = $this->get_data (), 0,3) = = = ' 235 ') {return true;            } else {$this->errors[] = ' AUTH command failed: '. Trim (substr ($error, 3));        return false; }} function mail ($from) {if ($this->is_connected () and $this->send_data (' Mail from:< ' . $from.        ' > ') and substr ($this->get_data (), 0, 2) = = = ' + ') {return true;        } else {return false; }} function Rcpt ($to) {if ($this->is_connected () and $this->send_data (' RCPT TO:< '. $to.        ' > ') and substr ($error = $this->get_data (), 0, 2) = = = ' + ') {return true;            } else {$this->errors[] = Trim (substr ($error, 3));        return false; }} function data () {if ($this->is_connected () and $this->send_data (' data ') A        ND substr ($error = $this->get_data (), 0, 3) = = = ' 354 ') {return true;            } else {$this->errors[] = Trim (substr ($error, 3));        return false; }} function is_connected () {return (Is_resource ($this->connection) and ($this->status = = = Smtp_sta    tus_connected)); } function Send_data ($data) {if (Is_resource ($this->connection)) {return fwrite ($this- >connection, $data.        CRLF, strlen ($data) + 2);        } else {return false; }} function Get_data () {$return = ';        $line = ";            if (Is_resource ($this->connection)) {while (Strpos ($return, CRLF) = = = False OR $line {3}!== ")                {$line = fgets ($this->connection, 512);            $return. = $line;        } return Trim ($return);        } else {return ';        }}/** * Gets the last error message * * @access public * @return String */function error_msg () {            if (!empty ($this->errors)) {$len = count ($this->errors)-1;        return $this->errors[$len];        } else {return '; }}}?>

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