';
}
/**
* Check if an email address is valid using PHP filters
*
* @param string $email Email address to check
* @return bool True if valid. False if not valid.
* @deprecated
*/
public static function isValidEmail($email) {
return filter_var($email, FILTER_VALIDATE_EMAIL);
}
/**
* Function allowing to generate poll's url
* @param string $id The poll's id
* @param bool $admin True to generate an admin URL, false for a public one
* @param string $vote_id (optional) The vote's unique id
* @return string The poll's URL.
*/
public static function getUrlSondage($id, $admin = false, $vote_id = '', $action = null, $action_value = null) {
// URL-Encode $action_value
$action_value = $action_value == null ? null : Utils::base64url_encode($action_value);
if (URL_PROPRE) {
if ($admin === true) {
$url = self::get_server_name() . $id . '/admin';
} else {
$url = self::get_server_name() . $id;
}
if ($vote_id != '') {
$url .= '/vote/' . $vote_id . "#edit";
} elseif ($action != null) {
if ($action_value != null) {
$url .= '/action/' . $action . '/' . $action_value;
} else {
$url .= '/action/' . $action;
}
}
} else {
if ($admin === true) {
$url = self::get_server_name() . 'adminstuds.php?poll=' . $id;
} else {
$url = self::get_server_name() . 'studs.php?poll=' . $id;
}
if ($vote_id != '') {
$url .= '&vote=' . $vote_id . "#edit";
} elseif ($action != null) {
if ($action_value != null) {
$url .= '&' . $action . "=" . $action_value;
} else {
$url .= '&' . $action . "=";
}
}
}
return $url;
}
/**
* This method pretty prints an object to the page framed by pre tags.
*
* @param mixed $object The object to print.
*/
public static function debug($object) {
echo '
';
print_r($object);
echo '';
}
public static function table($tableName) {
return TABLENAME_PREFIX . $tableName;
}
public static function markdown($md, $clear) {
preg_match_all('/\[!\[(.*?)\]\((.*?)\)\]\((.*?)\)/', $md, $md_a_img); // Markdown [](href)
preg_match_all('/!\[(.*?)\]\((.*?)\)/', $md, $md_img); // Markdown 
preg_match_all('/\[(.*?)\]\((.*?)\)/', $md, $md_a); // Markdown [text](href)
if (isset($md_a_img[2][0]) && $md_a_img[2][0] != '' && isset($md_a_img[3][0]) && $md_a_img[3][0] != '') { // [](href)
$text = self::htmlEscape($md_a_img[1][0]);
$html = '
 . ' "' . $text . '")
';
} elseif (isset($md_img[2][0]) && $md_img[2][0] != '') { // 
$text = self::htmlEscape($md_img[1][0]);
$html = '
 . ' "' . $text . '")
';
} elseif (isset($md_a[2][0]) && $md_a[2][0] != '') { // [text](href)
$text = self::htmlEscape($md_a[1][0]);
$html = '
' . $text . '';
} else { // text only
$text = self::htmlEscape($md);
$html = $text;
}
return $clear ? $text : $html;
}
public static function htmlEscape($html) {
return htmlentities($html, ENT_HTML5 | ENT_QUOTES);
}
public static function htmlMailEscape($html) {
return htmlspecialchars($html, ENT_HTML5 | ENT_QUOTES);
}
public static function csvEscape($text) {
$escaped = str_replace('"', '""', $text);
$escaped = str_replace("\r\n", '', $escaped);
$escaped = str_replace("\n", '', $escaped);
return '"' . $escaped . '"';
}
public static function cleanFilename($title) {
$cleaned = preg_replace('[^a-zA-Z0-9._-]', '_', $title);
$cleaned = preg_replace(' {2,}', ' ', $cleaned);
return $cleaned;
}
public static function fromPostOrDefault($postKey, $default = '') {
return !empty($_POST[$postKey]) ? Utils::htmlEscape($_POST[$postKey]) : $default;
}
public static function base64url_encode($input) {
return rtrim(strtr(base64_encode($input), '+/', '-_'), '=');
}
public static function base64url_decode($input) {
return base64_decode(str_pad(strtr($input, '-_', '+/'), strlen($input) % 4, '=', STR_PAD_RIGHT));
}
}