On 3/25/2011 12:09 PM, markb wrote:
Very rusty with PHP.
We moved our web site to a new hosting service (godaddy). PHP changed
from 4x to 5.2.17.
I can no longer change $_SESSION variables after the first use.
First call to form - start session create variables
Second call - can read variables, change existing ones (but they do not
persist to next call) - cannot create new variable without an error
Using $_SESSION['varname'] always
session.auto_start off
register_globals off
session.use_only_cookies off
I assume this is setting difference but I can't seem to find it.
OK, here's is what is happening. I think my web hosting service is just
really slow. I am storing the cookies in a unique directory. I create
the directory when I start the session. It appears to take a long time
for the directory creation to occur. The code is posted below. You can
test it at this link: http://www.injection-moldings.com/upload%20test1.php
1. First time you call,
the session starts,
variables assigned to $_SESSION -
but no session ID ([PHPSESSID]) yet
2. Reload the page,
previous $_SESSION data lost
but "markdir" value appears in cookie which is the hash value for the
session path.
Still no session ID
3. Reload -
session ID appears [PHPSESSID]
session data starts saving $_SESSION['test'] will increment
Code:
<?php
ob_start(); //start output buffering
// 10-2007 added java download text to first page
if(!isset($_COOKIE['makedir']) ) {
$unhashdir = startNewSession();
cfinitsession($_SESSION) ;
$_SESSION['mystep'] = 0;
$_SESSION['SUBMIT'] == 'auto';
$_POST = array();
setCookie('pagereload','0',0,'/');
$_COOKIE['pagereload'] = 0;
$_SESSION['pagereload']=0;
echo '<p>starting new session';
} else {
$unhashdir = '';
if (!setupSession1($_COOKIE['makedir'],$unhashdir)) {
die ('Could not start upload session');
exit;
}
$sess = session_start(); //
echo '<p>session running='.$sess;
}
/// hideme
echo '<pre>';
echo '<p>request uri'.$_SERVER['REQUEST_URI'];
if ($_SERVER['REQUEST_METHOD']=="POST") {
$v = print_r($_POST,true);
echo '<p>post:<br>'.$v;
}
$v = print_r($_COOKIE,true);
echo '<p>Cookie:<br>'.$v;
$v = print_r($_SESSION,true);
echo '<p>Session:<br>'.$v;
echo '</pre>';
/// end hideme
if(isset($_COOKIE["PHPSESSID"]))
{
echo '<p></p>session started';
if (isset( $_SESSION['test']) ) {
$_SESSION['test'] ++;
} else {
$_SESSION['test'] =0;
}
}
else
{
echo "<p>no session id";
}
exit;
// **********************************************//
// Functions AND Sub-routines
///////////////////////////////////////////////
// **********************************************//
function setupSession1($mydir,&$plaindir) {
// change the session save directory to our new folder
// $ mydir is encrypted
// $plaindir is unencrypted if available
$rt = false;
if ($plaindir != '' ) {
$mydir = $plaindir;
} else {
$plaindir = 'upload/'.cfFindHashDir($mydir) ;
$mydir = $plaindir;
}
if ($mydir == '') {
$rt = false;
} else {
$tempdir =
$_SERVER['DOCUMENT_ROOT']."/".$mydir.'/tmpZrtg/fe234/dafsksfe' ;
if( !is_dir($tempdir) ) {
Rmkdir($tempdir);
}
if( is_dir($tempdir) ){
ini_set( 'session.save_path',$tempdir );
ini_set('session.gc_maxlifetime',(60*3600*5.0)); //5.0 hours keep
session alive X hours
ini_set('session.gc_probability',1); //never empty the garbage???
ini_set('session.gc_divisor',1);
}
$rt = is_dir($tempdir);
}
return $rt;
}
function startNewSession() {
$unhashdir = makeSaveDir();
// save SaveDir encrypted
//log_error('New directory ='.$unhashdir);
$newdir =cfSha256($unhashdir); //*&^
//echo '<p>New session started!!:'.$sess." id:".session_id(); //
$_SESSION['SaveDir'] = $newdir;
ini_set("session.use_only_cookies", 0); //do not use cookies only
ini_set('session.cookie_secure',true);
ini_set('session.use_cookies',0);
setupSession1('',$unhashdir);
$sess = session_start();
setcookie('makedir',$newdir,0,'/');//(time()+(3600*6)),"/");
return $unhashdir;
}
function cfinitvar(&$var,$value) {
if (!isset($var) ) {
$var= $value;
}
}
//function cfinitsession(&$_SESSION) {
function cfinitsession($_SESSION) {
cfinitvar($_SESSION['file_upload_number'],'');
cfinitvar($_SESSION['email_fld'],'');
cfinitvar($_SESSION['first_name_fld'],'');
cfinitvar($_SESSION['position_fld'],'');
cfinitvar($_SESSION['company_fld'],'');
cfinitvar($_SESSION['addr1_fld'],'');
cfinitvar($_SESSION['addr2_fld'],'');
cfinitvar($_SESSION['city_fld'],'');
cfinitvar($_SESSION['state_fld'],'');
cfinitvar($_SESSION['zip_fld'],'');
cfinitvar($_SESSION['country_fld'],'');
cfinitvar($_SESSION['phone_fld'],'');
cfinitvar($_SESSION['fax_fld'],'');
cfinitvar($_SESSION['quote_ref_fld'],'');
cfinitvar($_SESSION['quote_due_fld'],'');
cfinitvar($_SESSION['last_name_fld'],'');
cfinitvar($_SESSION['SaveDir'],'');
cfinitvar($_SESSION['pagereload'],'');
// cfinitvar($_SESSION[''],'');
$_SESSION['mystep'] = intval(0) ;
$_SESSION['SUBMIT'] = 'auto';
$_SESSION['SUBMIT2'] = '';
$_SESSION['goTo'] = '';
$_SESSION['intoverride'] = false;
}
function makeSaveDir() {
$strt = false;
$timestamp = strtotime("now");
$newdir = "upload/$timestamp";
if(!is_dir($newdir)) {
$oldumask = umask();
mkdir($newdir, 0722, true);
umask($oldumask);
}
return $newdir;
}
function cfFindHashDir($dir) {
//$dir is encrypted with cfSha256
$rt = '';
$dirar = cfscandir( PATHTOUPLOAD,true,false) ;
//go backwards through dir names to find it
$f = print_r($dirar,true);
//log_error('dirar'.$f);
//log_error('dirar size'.count($dirar));
//log_error('Dir = '.$dir);
foreach ($dirar as $dirname=>$size) {
//log_error($dirname.'-'.cfSha256($dirname));
if ( cfSha256('upload/'.$dirname) == $dir ) { $rt = $dirname; break; }
}
return $rt;
}
function cfSha256($data) {
return (base64_encode(bin2hex(mhash(MHASH_SHA256,$data) ) ) );
}
function cfscandir( $dir,$listDirectories=false, $skipDots=true) {
$dirArray = array();
// echo '<P>-- dir='.$dir.'!!<br>';
if (file_exists($dir)) {
if ($handle = opendir($dir)) {
while (false !== ($file = readdir($handle))) {
if (($file != "." && $file != "..") || $skipDots == true) {
if($listDirectories == false) {
if(is_dir($dir."/".$file)) { continue ; } }
$dirArray[$file] = filesize($dir.$file) ;
}
}
closedir($handle);
}
}
return $dirArray;
}
function Rmkdir($path){ //recursive make directory
$exp=explode("/",$path);
$way='';
foreach($exp as $n){
$way.=$n.'/';
if(!file_exists($way)) {
// echo "<br>hello<br>making dir:".$way;
// echo "<br>root:".$_SERVER['DOCUMENT_ROOT'];
// echo "<br>self:".$_SERVER["PHP_SELF"];
mkdir($way, 0777);
}
}
}
?>
--
Mark B
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