<?php
$SESS_DBHOST = "localhost"; /* database server hostname */
$SESS_DBNAME = "h_guochan"; /* database name */
$SESS_DBUSER = "root"; /* database user */
$SESS_DBPASS = ""; /* database password */ $SESS_DBH = "";
$SESS_LIFE = get_cfg_var("session.gc_maxlifetime"); function sess_open($save_path, $session_name) {
global $SESS_DBHOST, $SESS_DBNAME, $SESS_DBUSER, $SESS_DBPASS, $SESS_DBH; if (! $SESS_DBH = mysql_pconnect($SESS_DBHOST, $SESS_DBUSER, $SESS_DBPASS)) {
echo "<li>Can't connect to $SESS_DBHOST as $SESS_DBUSER";
echo "<li>MySQL Error: " . mysql_error();
die;
} if (! mysql_select_db($SESS_DBNAME, $SESS_DBH)) {
echo "<li>Unable to select database $SESS_DBNAME";
die;
} return true;
} function sess_close() {
return true;
} function sess_read($key) {
global $SESS_DBH, $SESS_LIFE; $qry = "SELECT value FROM sessions WHERE sesskey = '$key' AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH); if (list($value) = mysql_fetch_row($qid)) {
return $value;
} return false;
} function sess_write($key, $val) {
global $SESS_DBH, $SESS_LIFE; $expiry = time() + $SESS_LIFE; //过期时间
$value = addslashes($val); $qry = "INSERT INTO sessions VALUES ('$key', $expiry, '$value')";
$qid = mysql_query($qry, $SESS_DBH); if (! $qid) {
$qry = "UPDATE sessions SET expiry = $expiry, value = '$value' WHERE sesskey = '$key' AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH);
} return $qid;
} function sess_destroy($key) {
global $SESS_DBH; $qry = "DELETE FROM sessions WHERE sesskey = '$key'";
$qid = mysql_query($qry, $SESS_DBH); return $qid;
} function sess_gc($maxlifetime) {
global $SESS_DBH; $qry = "DELETE FROM sessions WHERE expiry < " . time();
$qid = mysql_query($qry, $SESS_DBH); return mysql_affected_rows($SESS_DBH);
} session_set_save_handler(
"sess_open",
"sess_close",
"sess_read",
"sess_write",
"sess_destroy",
"sess_gc"); session_start();
?>
--------------
这是网上的一段把session写入mysql数据库的代码!
可不知道有什么时候为什么写不进去! 查看数据库session为空.把把记录全删除,又可以写入了.
$SESS_DBHOST = "localhost"; /* database server hostname */
$SESS_DBNAME = "h_guochan"; /* database name */
$SESS_DBUSER = "root"; /* database user */
$SESS_DBPASS = ""; /* database password */ $SESS_DBH = "";
$SESS_LIFE = get_cfg_var("session.gc_maxlifetime"); function sess_open($save_path, $session_name) {
global $SESS_DBHOST, $SESS_DBNAME, $SESS_DBUSER, $SESS_DBPASS, $SESS_DBH; if (! $SESS_DBH = mysql_pconnect($SESS_DBHOST, $SESS_DBUSER, $SESS_DBPASS)) {
echo "<li>Can't connect to $SESS_DBHOST as $SESS_DBUSER";
echo "<li>MySQL Error: " . mysql_error();
die;
} if (! mysql_select_db($SESS_DBNAME, $SESS_DBH)) {
echo "<li>Unable to select database $SESS_DBNAME";
die;
} return true;
} function sess_close() {
return true;
} function sess_read($key) {
global $SESS_DBH, $SESS_LIFE; $qry = "SELECT value FROM sessions WHERE sesskey = '$key' AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH); if (list($value) = mysql_fetch_row($qid)) {
return $value;
} return false;
} function sess_write($key, $val) {
global $SESS_DBH, $SESS_LIFE; $expiry = time() + $SESS_LIFE; //过期时间
$value = addslashes($val); $qry = "INSERT INTO sessions VALUES ('$key', $expiry, '$value')";
$qid = mysql_query($qry, $SESS_DBH); if (! $qid) {
$qry = "UPDATE sessions SET expiry = $expiry, value = '$value' WHERE sesskey = '$key' AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH);
} return $qid;
} function sess_destroy($key) {
global $SESS_DBH; $qry = "DELETE FROM sessions WHERE sesskey = '$key'";
$qid = mysql_query($qry, $SESS_DBH); return $qid;
} function sess_gc($maxlifetime) {
global $SESS_DBH; $qry = "DELETE FROM sessions WHERE expiry < " . time();
$qid = mysql_query($qry, $SESS_DBH); return mysql_affected_rows($SESS_DBH);
} session_set_save_handler(
"sess_open",
"sess_close",
"sess_read",
"sess_write",
"sess_destroy",
"sess_gc"); session_start();
?>
--------------
这是网上的一段把session写入mysql数据库的代码!
可不知道有什么时候为什么写不进去! 查看数据库session为空.把把记录全删除,又可以写入了.
sesskey char(32) gb2312_chinese_ci 否 无
expiry int(11) UNSIGNED 否 无
value text gb2312_chinese_ci 否 无
我才不看呢,懒得看,这年头流行框架,cms,不流行原创了。要怪就怪开源,开死一大片
function sess_read($key) {
global $SESS_DBH, $SESS_LIFE;
$qry = "SELECT value FROM sessions WHERE sesskey = '$key'";
$qid = mysql_query($qry, $SESS_DBH);
if (list($value) = mysql_fetch_row($qid)) {
return $value;
}
return false;
}
function sess_write($key, $val) {
global $SESS_DBH, $SESS_LIFE;
$expiry = time() + $SESS_LIFE;
$value = addslashes($val);
$qry = "SELECT * FROM `sessions` WHERE sesskey = '$key'";//查找是否有记录
$qid = mysql_query($qry, $SESS_DBH) or die("query Error."); //结果
if (mysql_num_rows($qid) > 0) {//有记录则更新
$qry = "UPDATE sessions SET expiry = $expiry, value = '$value' WHERE sesskey = '$key' ";
$qid = mysql_query($qry, $SESS_DBH);
}
else{//无记录插入
$qry = "INSERT INTO sessions VALUES ('$key', $expiry, '$value')";
$qid = mysql_query($qry,$SESS_DBH);
}
return $qid;
}
function sess_destroy($key) {
global $SESS_DBH;
$qry = "DELETE FROM sessions WHERE sesskey = '$key' ";
$qid = mysql_query($qry, $SESS_DBH);
return $qid;
}
function sess_gc($maxlifetime) {
global $SESS_DBH;
$qry = "DELETE FROM sessions WHERE expiry < " . time();
$qid = mysql_query($qry, $SESS_DBH);
return mysql_affected_rows($SESS_DBH);
}
改写了,还有,标题太狂.
function sess_write($key, $val) {
global $SESS_DBH, $SESS_LIFE; $expiry = time() + $SESS_LIFE; //过期时间
$value = addslashes($val); $qry = "INSERT INTO sessions VALUES ('$key', $expiry, '$value')";
$qid = mysql_query($qry, $SESS_DBH); if (! $qid) {
$qry = "UPDATE sessions SET expiry = $expiry, value = '$value' WHERE sesskey = '$key' AND expiry > " . time();
$qid = mysql_query($qry, $SESS_DBH);
} return $qid;
}
你这每次都是insert
你应该先select
如果qid不存在insert存在 update