Inserting special character like apostrophes with PHP/Mysql

Question

Hi friends,
I have a problem with php/mysql. I have created a form inton a php page with dreamweaver and when i try to fill the form with a string containing apostrophe ( ' ), i have a error. It seems that the insertion is not possible. Could you have any idea for that. I give you the php dreamweaver code and thank you for your help.
<?php require_once('Connections/Mainconnect.php'); ?>
<?php require_once('Zend/Date.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;   
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
if ($theValue=="")
    $theValue="NULL";
else
    $zendDate=new Zend_Date($theValue,"dd/MM/yyyy");
    $theValue="'".$zendDate->toString("yyyy-MM-dd")."'";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  return $theValue;
$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
if ((isset($_POST["MM_update"])) && ($_POST["MM_update"] == "form1")) {
  $updateSQL = sprintf("UPDATE pers_soc_reg SET field1=%s, field2=%s,
                       GetSQLValueString($_POST['field1'], "text"),
                       GetSQLValueString($_POST['field2'], "double"));

Answer 1

"Normally, you canot use mysql_real_escape_string without connection to database"
That is not true at all. Try running the following script.
<?php
if ($_POST['submit']){
$x1=$_POST['test1'];
foreach ($_POST as $key => $value) {
if (!is_array($value)){
$_POST[$key] = mysql_real_escape_string($value);
extract($_POST);
echo "The text after 'becomes' should be escaped (\')<br/>";
echo "$x1 becomes $test1<br/>";
?>
<hr/>
  <form action="#" method="post" />
Enter some text, including an apostrophe: <input name="test1" type="text"><br/>
    <p><input name="submit" value="submit" type="submit"/>
  </form>