[Zorono]

Hello everybody, so iam going to show you Today how to Check for TCP Listening Ports's Validation and Status using a small PHP script.

1. We have to initializate some required vars:
   
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   $host = "127.0.0.1"; // The Device's remote host which will be used on Monitoring the Specified Ports.
    $timeout = 2; // The connection timeout. (in Seconds)
    $ports = array(80,21); // The specified Ports which will be Monitored.
    $datei = fopen('portlist.ini', 'w+'); // Creating/Overwritting a file which will be used to store in the Data. 

2. Let's Add the Tagline of your Logs File(portlist.ini or whatever):
   
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   fputs($datei, "[Ports]\r\n"); 

3. Lets initializate a Loop Statement which will be used on switching between your specified Ports:
   
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   for($i = 1; $i <= count($ports); $i++)
{
        $a = $i - 1; // it subtract a number ever time. and assign the result to the var $a 

4. Let's Set the Variable's Type to Integer to avoid some stupid warnings/errors which will be caused of 'int to str':
   
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   settype($ports[$a], "int"); // for more info about possible Types feel free to check http://php.net/manual/en/function.settype.php 

5. Let's do the Magic:
   
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   $print = "Port".$ports[$a]."=" . ($handle = @fsockopen($host, $ports[$a], $errno, $errstr, $timeout) ? 'OPENED' : 'CLOSED') . "\r\n"; 

6. Let's Write the results to your INI Logs file:
   
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   fputs($datei, $print); 

7. Let's Close the Socket Connection to avoid Connection issues during the loop process:
   
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   @fclose($handle); 

8. Let's Close the Loop Statement's Bracket:
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   } 

9. Let's Close your INI Logs File's Process:
   
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   fclose($datei); 


Full Code:

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$host = "127.0.0.1";
    $timeout = 2;
    
    $ports = array(80,21);
    $datei = fopen('portlist.ini', 'w+');
    fputs($datei, "[Ports]\r\n");
    for($i = 1; $i <= count($ports); $i++)
    {
        $a = $i - 1;
        settype($ports[$a], "int");
        $print = "Port".$ports[$a]."=" . ($handle = @fsockopen($host, $ports[$a], $errno, $errstr, $timeout) ? 'OPENED' :  'CLOSED') . "\r\n";
        fputs($datei, $print);
        @fclose($handle);
    }
    fclose($datei);