Online PHP editor | perf for tsVY4

@ 2015-09-02T14:34:58Z

<?php

// the email to validate
$email = 'user@example.com';
// an optional sender
$sender = 'user@mydomain.com';
// instantiate the class
$SMTP_Validator = new SMTP_validateEmail();
// turn on debugging if you want to view the SMTP transaction
$SMTP_Validator->debug = true;
// do the validation
$results = $SMTP_Validator->validate(array($email), $sender);
// view results
echo $email.' is '.($results[$email] ? 'valid' : 'invalid')."\n";

// send email? 
if ($results[$email]) {
  //mail($email, 'Confirm Email', 'Please reply to this email to confirm', 'From:'.$sender."\r\n"); //send email
  echo 'VALID EMAIL!';
} else {
  echo 'The email addresses you entered is not valid';
}












/**
 * Validate Email Addresses Via SMTP
 * This queries the SMTP server to see if the email address is accepted.
 * @copyright http://creativecommons.org/licenses/by/2.0/ - Please keep this comment intact
 * @author gabe@fijiwebdesign.com
 * @contributers adnan@barakatdesigns.net
 * @version 0.1a
 */
class SMTP_validateEmail {

 /**
  * PHP Socket resource to remote MTA
  * @var resource $sock 
  */
 var $sock;

 /**
  * Current User being validated
  */
 var $user;
 /**
  * Current domain where user is being validated
  */
 var $domain;
 /**
  * List of domains to validate users on
  */
 var $domains;
 /**
  * SMTP Port
  */
 var $port = 25;
 /**
  * Maximum Connection Time to wait for connection establishment per MTA 
  */
 var $max_conn_time = 30;
 /**
  * Maximum time to read from socket before giving up
  */
 var $max_read_time = 5;
 
 /**
  * username of sender
  */
 var $from_user = 'user';
 /**
  * Host Name of sender
  */
 var $from_domain = 'localhost';
 
 /**
  * Nameservers to use when make DNS query for MX entries
  * @var Array $nameservers 
  */
 var $nameservers = array(
        '192.168.0.1'
);
 
 var $debug = false;

 /**
  * Initializes the Class
  * @return SMTP_validateEmail Instance
  * @param $email Array[optional] List of Emails to Validate
  * @param $sender String[optional] Email of validator
  */
 function SMTP_validateEmail($emails = false, $sender = false) {
  if ($emails) {
   $this->setEmails($emails);
  }
  if ($sender) {
   $this->setSenderEmail($sender);
  }
 }
 
 function _parseEmail($email) {
        $parts = explode('@', $email);
        $domain = array_pop($parts);
        $user= implode('@', $parts);
        return array($user, $domain);
 }
 
 /**
  * Set the Emails to validate
  * @param $emails Array List of Emails
  */
 function setEmails($emails) {
        foreach($emails as $email) {
                list($user, $domain) = $this->_parseEmail($email);
                if (!isset($this->domains[$domain])) {
                         $this->domains[$domain] = array();
                }
                $this->domains[$domain][] = $user;
        }
 }
 
 /**
  * Set the Email of the sender/validator
  * @param $email String
  */
 function setSenderEmail($email) {
        $parts = $this->_parseEmail($email);
        $this->from_user = $parts[0];
        $this->from_domain = $parts[1];
 }
 
 /**
 * Validate Email Addresses
 * @param String $emails Emails to validate (recipient emails)
 * @param String $sender Sender's Email
 * @return Array Associative List of Emails and their validation results
 */
 function validate($emails = false, $sender = false) {
        
  $results = array();

  if ($emails) {
   $this->setEmails($emails);
  }
  if ($sender) {
   $this->setSenderEmail($sender);
  }

  // query the MTAs on each Domain
  foreach($this->domains as $domain=>$users) {
        
         $mxs = array();
         
         // current domain being queried
         $this->domain = $domain;
  
          // retrieve SMTP Server via MX query on domain
          list($hosts, $mxweights) = $this->queryMX($domain);


          for($n=0; $n < count($hosts); $n++){
           $mxs[$hosts[$n]] = $mxweights[$n];
          }
          asort($mxs);
        
          // last fallback is the original domain
          $mxs[$this->domain] = 0;
          
          $this->debug(print_r($mxs, 1));
          
          $timeout = $this->max_conn_time;
           
          // try each host
          while(list($host) = each($mxs)) {
           // connect to SMTP server
           $this->debug("try $host:$this->port\n");
           if ($this->sock = fsockopen($host, $this->port, $errno, $errstr, (float) $timeout)) {
            stream_set_timeout($this->sock, $this->max_read_time);
            break;
           }
          }
         
          // did we get a TCP socket
          if ($this->sock) {
           $reply = fread($this->sock, 2082);
           $this->debug("<<<\n$reply");
           
           preg_match('/^([0-9]{3}) /ims', $reply, $matches);
           $code = isset($matches[1]) ? $matches[1] : '';
        
           if($code != '220') {
            // MTA gave an error...
            foreach($users as $user) {
                $results[$user.'@'.$domain] = false;
                }
                continue;
           }

           // say helo
           $this->send("HELO ".$this->from_domain);
           // tell of sender
           $this->send("MAIL FROM: <".$this->from_user.'@'.$this->from_domain.">");
           
           // ask for each recepient on this domain
           foreach($users as $user) {
           
                   // ask of recepient
                   $reply = $this->send("RCPT TO: <".$user.'@'.$domain.">");
                   
                    // get code and msg from response
                   preg_match('/^([0-9]{3}) /ims', $reply, $matches);
                   $code = isset($matches[1]) ? $matches[1] : '';
                
                   if ($code == '250') {
                    // you received 250 so the email address was accepted
                    $results[$user.'@'.$domain] = true;
                   } elseif ($code == '451' || $code == '452') {
                        // you received 451 so the email address was greylisted (or some temporary error occured on the MTA) - so assume is ok
                        $results[$user.'@'.$domain] = true;
                   } else {
                        $results[$user.'@'.$domain] = false;
                   }
           
           }
           
           // reset before quit
           $this->send("RSET");
           
           // quit
           $this->send("quit");
           // close socket
           fclose($this->sock);
          
          } else {
                $this->debug('Error: Could not connect to a valid mail server for this email address: ' . $user.'@'.$domain);
          }
        }
        return $results;
 }


 function send($msg) {
  fwrite($this->sock, $msg."\r\n");

  $reply = fread($this->sock, 2082);

  $this->debug(">>>\n$msg\n");
  $this->debug("<<<\n$reply");
  
  return $reply;
 }
 
 /**
  * Query DNS server for MX entriesg
  * @return 
  */
 function queryMX($domain) {
        $hosts = array();
        $mxweights = array();
        if (function_exists('getmxrr')) {
                getmxrr($domain, $hosts, $mxweights);
        } else {
                // windows, we need Net_DNS
                require_once 'Net/DNS.php';

                $resolver = new Net_DNS_Resolver();
                $resolver->debug = $this->debug;
                // nameservers to query
                $resolver->nameservers = $this->nameservers;
                $resp = $resolver->query($domain, 'MX');
                if ($resp) {
                        foreach($resp->answer as $answer) {
                                $hosts[] = $answer->exchange;
                                $mxweights[] = $answer->preference;
                        }
                }
                
        }
        return array($hosts, $mxweights);
 }
 
 /**
  * Simple function to replicate PHP 5 behaviour. http://php.net/microtime
  */
 function microtime_float() {
  list($usec, $sec) = explode(" ", microtime());
  return ((float)$usec + (float)$sec);
 }

 function debug($str) {
  if ($this->debug) {
   echo '<pre>'.htmlentities($str).'</pre>';
  }
 }

}

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.3.6	0.009	0.009	18.77
8.3.5	0.013	0.007	21.32
8.3.4	0.008	0.008	19.34
8.3.3	0.004	0.011	19.20
8.3.2	0.009	0.000	20.72
8.3.1	0.004	0.004	23.90
8.3.0	0.005	0.003	24.09
8.2.18	0.011	0.007	18.67
8.2.17	0.015	0.000	22.96
8.2.16	0.006	0.009	22.45
8.2.15	0.004	0.004	24.18
8.2.14	0.008	0.000	24.66
8.2.13	0.000	0.008	26.16
8.2.12	0.009	0.000	18.00
8.2.11	0.004	0.008	21.25
8.2.10	0.006	0.006	18.13
8.2.9	0.000	0.008	19.44
8.2.8	0.006	0.003	17.97
8.2.7	0.004	0.004	18.13
8.2.6	0.000	0.008	18.30
8.2.5	0.003	0.006	18.07
8.2.4	0.003	0.006	21.26
8.2.3	0.004	0.004	20.19
8.2.2	0.005	0.003	18.13
8.2.1	0.000	0.008	18.48
8.2.0	0.003	0.006	18.35
8.1.28	0.015	0.000	25.92
8.1.27	0.003	0.006	20.57
8.1.26	0.006	0.003	26.35
8.1.25	0.004	0.004	28.09
8.1.24	0.006	0.003	23.98
8.1.23	0.004	0.007	17.91
8.1.22	0.006	0.003	18.04
8.1.21	0.005	0.003	18.77
8.1.20	0.010	0.000	17.72
8.1.19	0.000	0.009	17.61
8.1.18	0.004	0.004	18.10
8.1.17	0.009	0.000	18.91
8.1.16	0.008	0.000	22.29
8.1.15	0.004	0.004	19.14
8.1.14	0.004	0.004	17.74
8.1.13	0.000	0.007	17.91
8.1.12	0.003	0.006	17.61
8.1.11	0.000	0.008	17.63
8.1.10	0.007	0.000	17.79
8.1.9	0.008	0.000	17.55
8.1.8	0.009	0.000	17.61
8.1.7	0.004	0.004	17.65
8.1.6	0.009	0.000	17.89
8.1.5	0.008	0.000	17.80
8.1.4	0.000	0.009	17.61
8.1.3	0.000	0.008	17.78
8.1.2	0.000	0.008	17.83
8.1.1	0.003	0.006	17.67
8.1.0	0.004	0.004	17.71
8.0.30	0.003	0.005	18.77
8.0.29	0.004	0.004	17.13
8.0.28	0.005	0.003	18.66
8.0.27	0.003	0.003	17.48
8.0.26	0.000	0.007	17.53
8.0.25	0.009	0.000	17.16
8.0.24	0.004	0.004	17.15
8.0.23	0.008	0.000	17.16
8.0.22	0.000	0.007	17.10
8.0.21	0.000	0.007	17.03
8.0.20	0.003	0.007	17.12
8.0.19	0.000	0.009	17.16
8.0.18	0.000	0.008	17.29
8.0.17	0.007	0.002	17.16
8.0.16	0.003	0.005	17.30
8.0.15	0.002	0.005	17.11
8.0.14	0.003	0.006	17.25
8.0.13	0.007	0.000	13.73
8.0.12	0.003	0.005	17.29
8.0.11	0.006	0.003	17.26
8.0.10	0.003	0.005	17.10
8.0.9	0.004	0.004	17.05
8.0.8	0.006	0.009	17.10
8.0.7	0.008	0.000	17.00
8.0.6	0.004	0.004	17.06
8.0.5	0.003	0.005	17.20
8.0.3	0.012	0.013	17.39
8.0.2	0.010	0.011	17.40
8.0.1	0.005	0.003	17.32
8.0.0	0.010	0.008	17.09
7.4.33	0.000	0.005	15.45
7.4.32	0.007	0.000	16.77
7.4.30	0.000	0.007	16.76
7.4.29	0.004	0.004	16.80
7.4.28	0.005	0.003	16.77
7.4.27	0.000	0.007	16.78
7.4.26	0.004	0.004	16.79
7.4.25	0.004	0.004	16.90
7.4.24	0.002	0.007	16.91
7.4.23	0.008	0.000	16.89
7.4.22	0.017	0.000	16.96
7.4.21	0.004	0.012	16.94
7.4.20	0.004	0.004	16.91
7.4.16	0.006	0.010	16.88
7.4.15	0.006	0.013	17.40
7.4.14	0.013	0.011	17.86
7.4.13	0.019	0.004	16.88
7.4.12	0.015	0.006	16.94
7.4.11	0.020	0.007	16.91
7.4.10	0.015	0.009	16.86
7.4.9	0.011	0.007	16.91
7.4.8	0.009	0.009	19.39
7.4.7	0.012	0.009	16.86
7.4.6	0.012	0.009	16.79
7.4.5	0.005	0.000	16.81
7.4.4	0.014	0.004	17.10
7.4.3	0.007	0.014	16.85
7.4.0	0.007	0.007	15.27
7.3.33	0.008	0.000	13.68
7.3.32	0.000	0.006	13.77
7.3.31	0.004	0.004	16.66
7.3.30	0.003	0.005	16.78
7.3.29	0.005	0.002	16.77
7.3.28	0.005	0.016	16.80
7.3.27	0.007	0.011	17.40
7.3.26	0.019	0.004	16.82
7.3.25	0.012	0.009	16.88
7.3.24	0.009	0.009	16.93
7.3.23	0.010	0.010	16.91
7.3.21	0.006	0.014	16.85
7.3.20	0.014	0.011	16.84
7.3.19	0.007	0.013	16.90
7.3.18	0.006	0.012	17.00
7.3.17	0.004	0.018	16.94
7.3.16	0.012	0.009	16.68
7.2.33	0.005	0.014	16.73
7.2.32	0.015	0.009	17.05
7.2.31	0.010	0.007	17.03
7.2.30	0.012	0.006	17.16
7.2.29	0.017	0.005	17.02
7.2.6	0.008	0.006	17.19
7.2.0	0.006	0.009	19.71
7.1.20	0.008	0.004	16.12
7.1.10	0.013	0.005	18.52
7.1.7	0.004	0.004	17.63
7.1.6	0.016	0.009	19.12
7.1.5	0.012	0.008	17.16
7.1.0	0.007	0.073	22.64
7.0.20	0.004	0.009	16.82
7.0.10	0.007	0.077	20.25
7.0.9	0.007	0.077	20.43
7.0.8	0.010	0.053	20.33
7.0.7	0.013	0.077	20.30
7.0.6	0.037	0.080	20.21
7.0.5	0.003	0.087	20.59
7.0.4	0.007	0.087	20.41
7.0.3	0.010	0.080	20.54
7.0.2	0.010	0.083	20.59
7.0.1	0.013	0.087	20.55
7.0.0	0.007	0.080	20.58
5.6.28	0.003	0.067	21.47
5.6.25	0.003	0.080	21.09
5.6.24	0.007	0.073	21.00
5.6.23	0.010	0.073	21.00
5.6.22	0.013	0.077	20.90
5.6.21	0.003	0.087	21.07
5.6.20	0.017	0.077	21.57
5.6.19	0.010	0.083	21.42
5.6.18	0.010	0.083	21.57
5.6.17	0.010	0.080	21.57
5.6.16	0.017	0.077	21.60
5.6.15	0.007	0.080	21.45
5.6.14	0.007	0.087	21.64
5.6.13	0.010	0.077	21.43
5.6.12	0.007	0.053	21.31
5.6.11	0.007	0.083	21.28
5.6.10	0.007	0.057	21.57
5.6.9	0.007	0.083	21.34
5.6.8	0.000	0.063	20.94
5.6.7	0.017	0.073	20.88
5.6.6	0.007	0.080	20.82
5.6.5	0.017	0.073	20.68
5.6.4	0.013	0.067	20.76
5.6.3	0.020	0.070	20.84
5.6.2	0.007	0.053	20.66
5.6.1	0.010	0.073	20.84
5.6.0	0.010	0.080	20.84
5.5.38	0.013	0.073	20.75
5.5.37	0.010	0.080	20.65
5.5.36	0.007	0.077	20.89
5.5.35	0.017	0.070	20.83
5.5.34	0.003	0.057	21.28
5.5.33	0.013	0.073	21.32
5.5.32	0.017	0.073	21.35
5.5.31	0.007	0.083	21.09
5.5.30	0.007	0.083	21.24
5.5.29	0.003	0.083	21.15
5.5.28	0.010	0.077	21.24
5.5.27	0.010	0.077	21.34
5.5.26	0.007	0.083	21.36
5.5.25	0.003	0.083	21.14
5.5.24	0.007	0.083	20.78
5.5.23	0.003	0.090	20.49
5.5.22	0.017	0.070	20.48
5.5.21	0.013	0.077	20.67
5.5.20	0.007	0.080	20.52
5.5.19	0.003	0.083	20.71
5.5.18	0.003	0.083	20.59
5.5.16	0.010	0.077	20.43
5.5.15	0.013	0.080	20.63
5.5.14	0.010	0.073	20.56
5.5.13	0.007	0.077	20.59
5.5.12	0.007	0.073	20.50
5.5.11	0.013	0.077	20.74
5.5.10	0.007	0.047	20.62
5.5.9	0.003	0.050	20.42
5.5.8	0.007	0.077	20.61
5.5.7	0.013	0.050	20.63
5.5.6	0.013	0.067	20.38
5.5.5	0.010	0.077	20.58
5.5.4	0.007	0.080	20.54
5.5.3	0.000	0.067	20.55
5.5.2	0.027	0.063	20.61
5.5.1	0.007	0.077	20.47
5.5.0	0.017	0.070	20.32
5.4.45	0.010	0.083	19.77
5.4.44	0.010	0.077	19.82
5.4.43	0.007	0.050	19.80
5.4.42	0.007	0.070	19.95
5.4.41	0.017	0.067	19.68
5.4.40	0.010	0.070	19.19
5.4.39	0.007	0.077	19.63
5.4.38	0.007	0.070	19.32
5.4.37	0.000	0.087	19.40
5.4.36	0.007	0.073	19.45
5.4.35	0.020	0.047	19.32
5.4.34	0.007	0.080	19.59
5.4.32	0.010	0.077	19.48
5.4.31	0.017	0.077	19.46
5.4.30	0.020	0.067	19.32
5.4.29	0.017	0.073	19.43
5.4.28	0.013	0.063	19.37
5.4.27	0.010	0.077	19.45
5.4.26	0.013	0.073	19.59
5.4.25	0.007	0.080	19.49
5.4.24	0.013	0.057	19.49
5.4.23	0.013	0.070	19.46
5.4.22	0.013	0.050	19.36
5.4.21	0.013	0.070	19.29
5.4.20	0.010	0.070	19.29
5.4.19	0.003	0.077	19.47
5.4.18	0.007	0.083	19.45
5.4.17	0.013	0.070	19.48
5.4.16	0.017	0.070	19.37
5.4.15	0.017	0.063	19.48
5.4.14	0.003	0.080	16.81
5.4.13	0.010	0.070	16.73
5.4.12	0.007	0.077	16.73
5.4.11	0.003	0.050	16.82
5.4.10	0.017	0.050	16.77
5.4.9	0.003	0.077	16.68
5.4.8	0.000	0.080	16.84
5.4.7	0.007	0.080	16.80
5.4.6	0.010	0.067	16.83
5.4.5	0.007	0.057	16.91
5.4.4	0.003	0.080	16.88
5.4.3	0.010	0.070	16.86
5.4.2	0.007	0.077	16.78
5.4.1	0.007	0.063	16.88
5.4.0	0.010	0.047	16.02

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