RE: PHP 4.0 Bug #8434 Updated: PHP has encountered an Access Viol ation at 01292466

Well, that _is_ a good question: I have absolutely no idea which instruction causes the problem ! As said in my report, the error can appear on any of my 30+ scripts on the site. The error does not have a preference for any of the scripts either. It just appears _randomly_ on any of the scripts at a random time and at random frequency. I sometimes have the error 2 to 5 times a day, and sometimes it will not appear for 2 days at all. I know that doesn't help you much, but that's about as precise as I can be. That's why I gave you all the information necessary to rebuild an exact copy of 1 of my scripts and see _if_ you get the error at all. It will be necessary though that you test it on the same platform as I run it: Win 2K Server with IIS 5.0 and PHP-4.0.4 as ISAPI (php4isapi.dll). The database runs on a separate server (Win NT4 Server SP6). Hope you find a clue where to start looking (as a novice, I'd say in the .DLL). If you need any further information, do not hesitate ! Greetings, Steven -----Message d'origine----- De: Bug Database [mailto:php-dev@lists.php.net] Date: lundi 8 janvier 2001 14:59 À: svanpoeck@mailplanet.net Objet: PHP 4.0 Bug #8434 Updated: PHP has encountered an Access Violation at 01292466 ID: 8434 Updated by: dbeu Reported By: svanpoeck@mailplanet.net Old-Status: Open Status: Feedback Bug Type: IIS related Assigned To: Comments: can you please cut down the code to the min. needed to reproduce it? Previous Comments: --------------------------------------------------------------------------- [2000-12-27 07:27:56] svanpoeck@mailplanet.net Still having same bug in PHP-4.0.4 Win ISAPI module... Randomly showing error "PHP has encountered an Access Violation at 01292466" (the number changes every time the error occurs) upon call to PHP ISAPI engin. The error can occur on any of my 30+ scripts on this site. This problem persists since at least 3.0.3pl1. When will this nightmare be over ?? I have to switch back to a CGI environment, which slows down PHP execution far too much... Restarting IISAdmin does get the engine running properly again... until the next "Access Violation"... Almost all of the bug reports concerning this error have not even been assigned to anyone. Does this mean you're not going to try to get rid of this problem ? If you have any questions regarding the script below, do not hesitate to contact me! All in all: thanks for bringing us PHP and keep up the good work ! Steven VAN POECK One piece of code on which the error occurs: -------------------------------------------- include( "common.php" ); // Call session (if any) session_save_path("tmp"); session_start(); // Empty basket $sql = "DELETE FROM panier WHERE client_id='$user'"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_dag, $sql ); check_error( $result ); // Set user state to "D" (deconnected) $sql = "UPDATE client SET state='D' WHERE id='$user'"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_dag, $sql ); check_error( $result ); // destroy session (if any) session_destroy(); // Get highest client ID $sql = "SELECT MAX(id) AS max_id FROM client"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_dag, $sql ); check_error( $result ); $data = mysql_fetch_object( $result ); $last_client = $data->max_id; // Define new client ID if( substr($last_client, 1) < 50000000 ){ $numero_client = P50000101; /* For very first client */ }else{ $numero_client = "P".(substr($last_client, 1) + 1); } // Get password of the day $today = date("Y-m-d", time()); $mdp = create_pass(); // Define timestamp for expiration time $exp_time = time()+1800; $sql = "INSERT INTO client VALUES( '$numero_client', PASSWORD('$mdp'), '$today', '$today', '0', 'DP', '$exp_time', 'C')"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_dag, $sql ); check_error( $result ); // Initialise session session_save_path( "tmp" ); session_register("user"); $user = $numero_client; session_register("key"); $key = $mdp; session_register("type"); $type = "p_"; session_register( "cadeau_1" ); $cadeau_1 = 0; // Send user to the site header( "Location:/pcgi/display_rubr.php?".SID."&rubr=".urlencode(${$type."rubr_def" }) ); ------------------------------------------------------- The function "create_pass()": ------------------------------------------------------- function create_pass(){ global $db_host, $db_user, $db_pass, $db_adm; $alpha = array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'); $n = 0; $flag = 0; // Select all passwords $today = date("Y-m-d", time()); $sql = "SELECT * FROM mdp_jour"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_adm, $sql ); while( $data = mysql_fetch_object( $result ) ){ // Verify if today's password already exists // If so, use that one if( date("Y-m-d", time()) == $data->date ){ $pass = $data->mdp; $flag = 1; } } if( $flag != 1){ // No password for today yet // So have to make one while( $n < 4 ){ reset( $alpha ); mt_srand((double)microtime()*1000000); $pass = mt_rand(0, 25); $password .= $alpha[$pass]; $n++; } // Select all passwords $sql = "SELECT * FROM mdp_jour"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_adm, $sql ); while( $data = mysql_fetch_object( $result ) ){ // Verify if created password already exists // If so, recreate another password if( eregi( $data->mdp, $password ) ){ create_pass(); } } // If not, generated password is unique. Write to DB if( $flag == 0 ){ $pass = $password; $sql = "INSERT INTO mdp_jour VALUES('', '$today', '$password')"; mysql_pconnect( $db_host, $db_user, $db_pass ); $result = mysql_db_query( $db_adm, $sql ); check_error( $result ); } } return $pass; } ---------------------------------------------------------- You'll need 2 databases: DB1 ($db_dag in the script): ------- Table "panier": Field Type Null Key Default Extra Privileges id int(11) unsigned zerofill PRI auto_increment select,insert,update,references client_id varchar(10) 0 select,insert,update,references produit_ref varchar(50) select,insert,update,references produit_prix_ttc float(5,2) unsigned 0 select,insert,update,references prix_gift enum('1','0') 1 select,insert,update,references produit_n int(3) unsigned 0 select,insert,update,references expire int(13) 0 select,insert,update,references -------- Table "client": Field Type Null Key Default Extra Privileges id varchar(10) PRI select,insert,update,references pass varchar(255) select,insert,update,references crea date 0000-00-00 select,insert,update,references mod date 0000-00-00 select,insert,update,references visits int(5) unsigned zerofill MUL 0 select,insert,update,references type enum('DP','DAG') DP select,insert,update,references expire int(13) 0 select,insert,update,references state enum('C','D') D select,insert,update,references DB2 ($db_adm in the script): ------- Table "mdp_jour": Field Type Null Key Default Extra Privileges id int(5) unsigned zerofill 0 select,insert,update,references date date 0000-00-00 select,insert,update,references mdp char(5) select,insert,update,references --------------------------------------------------------------------------- Full Bug description available at: http://bugs.php.net/?id=8434