Správné zobrazení času pro ČR (časový rozdíl hodin):

date.timezone = "Europe/Prague"

• převzato z http://php.vrana.cz/http-metody-get-a-post.php

$cesta = substr($_SERVER["PHP_SELF"], 0, strrpos($_SERVER["PHP_SELF"], "/"));
header("Location: http://$_SERVER[SERVER_NAME]$cesta/vysledek.php", true, 303);

• převzato z http://www.linuxjournal.com/article/9585

function isValidEmail($email) {
    $isValid = true;
    $atIndex = strrpos($email, "@");
 
    if(is_bool($atIndex) && !$atIndex) {
        $isValid = false;
    }
    else {
        $domain = substr($email, $atIndex+1);
        $local = substr($email, 0, $atIndex);
        $localLen = strlen($local);
        $domainLen = strlen($domain);
 
        if($localLen < 1 || $localLen > 64) {
            // local part length exceeded
            $isValid = false;
        }
        else if($domainLen < 1 || $domainLen > 255) {
            // domain part length exceeded
            $isValid = false;
        }
        else if($local[0] == '.' || $local[$localLen-1] == '.') {
            // local part starts or ends with '.'
            $isValid = false;
        }
        else if(preg_match('/\\.\\./', $local)) {
            // local part has two consecutive dots
            $isValid = false;
        }
        else if (!preg_match('/^[A-Za-z0-9\\-\\.]+$/', $domain)) {
            // character not valid in domain part
            $isValid = false;
        }
        else if(preg_match('/\\.\\./', $domain)) {
            // domain part has two consecutive dots
            $isValid = false;
        }
        else if(!preg_match('/^(\\\\.|[A-Za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/', str_replace("\\\\","",$local))) {
            // character not valid in local part unless
            // local part is quoted
            if(!preg_match('/^"(\\\\"|[^"])+"$/', str_replace("\\\\","",$local))) {
                $isValid = false;
            }
        }
 
        if($isValid && !(checkdnsrr($domain, "MX") || checkdnsrr($domain, "A"))) {
            // domain not found in DNS
            $isValid = false;
        }
    }
 
    return $isValid;
}

function generatePassword($length = 8) {
    // start with a blank password
    $password = "";
 
    // define possible characters
    $possible = "0123456789bcdfghjkmnpqrstvwxyz"; 
 
    // set up a counter
    $i = 0; 
 
    // add random characters to $password until $length is reached
    while($i < $length) {
        // pick a random character from the possible ones
        $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 
        // we don't want this character if it's already in the password
        if(!strstr($password, $char)) { 
            $password .= $char;
            $i++;
        }
    }
 
    // done!
    return $password;
}

$mysqldate = date('Y-m-d H:i:s', $phpdate); // formát pro MySQL
$phpdate = strtotime($mysqldate);
 
setlocale(LC_TIME, 'cs_CZ.utf-8'); 
$cz_date = strftime('%A, %e. %B %Y %H:%M', strtotime($date));
 
// primo z MySQL pod Windows
$date = strftime('%#d.%#m.%Y, %H:%M', strtotime($r['datetime']));