Change PHP Version from 5.2.17 to 5.3.28

[Tato123]

Hello to all,

My host requires me to upgrade to a higher version of php 5.2.17

If I select the 5.3.28 I can not log-in to the site.

Can anyone help me?

My code:

<h3>Autenticazione</h3>
    <?php
 /*
 Quick example of how to see if they're logged in or not
 Only show this login form if they're logged in */
 if(Auth::LoggedIn() == false)
 { ?>
	    <form name="loginform" action="<?php echo url('/login'); ?>" method="post">
		  <p>
		    <input type="text" onclick="this.value='';" onblur="this.value=!this.value?'Email':this.value;" name="email" value="Email/Callsign VARXXX" id="email" size="24" />
		  </p>
		  <p>
		    <input type="password" onclick="this.value='';" onblur="this.value=!this.value?'Password':this.value;" name="password" id="password" value="Password" size="24" />
		    <input type="hidden" name="redir" value="index.php/profile" />
		    <input type="hidden" name="action" value="login" />
		  </p>
		  <p>  </p>

		  Ricordami? <input type="checkbox" name="remember" />
 <br>
 <br>
 <button type="submit" id="">Login</button>
 <br>
 <br>
 <a href="<?php echo url('Login/forgotpassword'); ?>">Ho dimenticato la password</a>
    </form>
    <p>
	  <?php
 }