比较文本文件中的IP地址。 如何搜寻？

Question

I have a textfile there the content is following:

TME: 1316179740.2558|FNE: blog-comments.php|MSG: Kommenterade "ett nyare blogginlägg"-blogginlägget|IPA: ce8bf851d2b1bb1d7f7b24d3656f3d4c90d4ac88c50537e065843b7a0a6c8c236eef76d5814f0782f864209da2b8be1be0d449e86edbcd478847ccbe0189b61f

... and so on. IPA stands for IP address and is the visitor IP address. I want to compare this information with the visitors real IP address, so to speak, to get correct information from the file for the visitor. How do I accomplish this?

Thanks in advance.

Answer 1

You could use a regular expression to grab out the important portion and compare that...

if (preg_match_all('/IPA:\s*([a-f\d]+)/i', $subject, $matches, PREG_SET_ORDER)) {
    // your values will be in the $matches array here
    // with the actual IP hash in $matches[$i][1]
}

I don't know how long the IPA is, or what the ending delimiter is, so this will grab all hexadecimal characters until they run out.

Answer 2

Try

$array = file('textfiles/activity/'.$_GET['d'].'.txt'); 

foreach($array AS $key => $test) { 
    $info       = explode('|', $test); 
    $info_date  = explode('TME: ', $info[0]); 
    $info_msg   = explode('MSG: ', $info[2]); 
    $hashed_ip  = explode('IPA: ', $info[3]);
    if(trim($hashed_ip[1]) == hash('whirlpool', $_SERVER['REMOTE_ADDR'])) { 
        echo '<b>'.date('H:i', $info_date[1]).'</b>: '.$info_msg[1].'<br>';     
    }       
}