Your commonly used functions PHP
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Thread: Your commonly used functions PHP

  1. #1
    Flash M0nkey
    Join Date
    Sep 2001
    Posts
    3,447

    Your commonly used functions PHP

    Ok we all have some lil snippets of code we fall back on time-&-time again so I thought would be a nice idea to share some of them out

    So I'll start it of......

    this is a simple function I cobbled together after reading some tuts on validating email adresses with PHP

    It checks email formatting and also that domain exsists - not foolproof but should help weed out things like adflhad@asdfhlsd.com

    Code:
    //check email is valid format
    function emailsyntax_is_valid($email) {
      $to_work_out = explode("@", $email);
      if (!isset($to_work_out[0])) return FALSE;
      if (!isset($to_work_out[1])) return FALSE;
    
      $pattern_local = '^([0-9a-z]*([-|_]?[0-9a-z]+)*)(([-|_]?)\.([-|_]?)[0-9a-z]*([-|_]?[0-9a-z]+)+)*([-|_]?)$';
      $pattern_domain = '^([0-9a-z]+([-]?[0-9a-z]+)*)(([-]?)\.([-]?)[0-9a-z]*([-]?[0-9a-z]+)+)*\.[a-z]{2,4}$';
      $match_local = eregi($pattern_local, $to_work_out[0]);
      $match_domain = eregi($pattern_domain, $to_work_out[1]);
    
      if ($match_local && $match_domain) {
      	list($user, $domain) = split("@", $email, 2);
          if (! checkdnsrr($domain, "MX")) {
            return FALSE;
    	}
    	else
    	{
        return TRUE;
    	}
      }
      return FALSE;
    }

  2. #2
    Senior Member
    Join Date
    Feb 2004
    Posts
    270
    not really a function but more a snippet of code

    while($row = mysql_fetch_array($result)) {
    echo '<tr>';
    for($i = 0; $i < count($row); $i++) {
    echo '<td>'.$row[$i].'</td>';
    }
    echo '</tr>';
    }
    echo '</table>';

    adepted many times but still remaining one of my most used pieces of code.
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