PHP Programming Tricks for beginners

I'll be presenting a couple of nice PHP Programming Tricks in this page. You can take a look at the various tricks in these sub pages.

Force a secure HTTP connection

if (!($HTTPS == "on")) {

header ("Location: https://$SERVER_NAME$php_SELF");

exit;

}

Get the date

$today = getdate();

$month = $today['month'];

$mday = $today['mday'];

$year = $today['year'];

Random Loading

You can load random stuff by using this code. For this example, I load random color code:

$selectnumber = rand (1, 5);

if($selectnumber==1) $pagebg="#990000";

if($selectnumber==2) $pagebg="#0000FF";

if($selectnumber==3) $pagebg="#00AAAA";

if($selectnumber==4) $pagebg="#000099";

if($selectnumber==5) $pagebg="#DDDD00";

Easy Way to List Directory Structure

$path = "/home/user/public/foldername/";

$dir_handle = @opendir($path) or die("Unable to open $path");

while ($file = readdir($dir_handle)) {

    if($file == "." || $file == ".." || $file == "index.php" )

        continue;

        echo "<a href=\"$file\">$file</a><br />";

    }

closedir($dir_handle);

Easy Way to Optimize Database Table

dbConnect()

$alltables = mysql_query("SHOW TABLES");

while ($table = mysql_fetch_assoc($alltables))

{

   foreach ($table as $db => $tablename)

   {

       mysql_query("OPTIMIZE TABLE '".$tablename."'")

           or die(mysql_error());

   }

}

Create a password protect webpage

<?

$username = "someuser";

$password = "somepassword";

if ($_POST['txtUsername'] != $username || $_POST['txtPassword'] != $password) {?>

<h1>Login</h1>

<form name="form" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">

      <p><label for="txtUsername">Username:</label>

      <br><input type="text" title="Enter your Username" name="txtUsername"></p>

      <p><label for="txtpassword">Password:</label>

      <br><input type="password" title="Enter your password" name="txtPassword"></p>

  <p><input type="submit" name="Submit" value="Login"></p>

</form>

<?} else {?>

    <p>This is the protected page. Your private content goes here.</p>

<?}?>

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