我的db.php是公用数据库操作的,里有一行为
function fetch_all($sql, $id = '') {
$arr = array();
$query = $this->query($sql);
while($data = $this->fetch_array($query)) {
$id ? $arr[$data[$id]] = $data : $arr[] = $data;
}
return $arr;
}我在allpath.php类里面使用
class allpath
{
var $db;
function __construct(&$db) {
$this->db = $db;
}
function GetUserAllFiles($username,$path,$type)
{
$data = $this->db->fetch_all("select * from AllPath where UserName='$username' and Postion='$path' and not FileName is null and FileName<>'' order by id desc");
return $data; //此处想返回找到的结果集,总是报错
}
}在另外一个file.php里调用
$b=new allpath($db);
$rslist=$b->GetUserAllFiles($username,$path,"1");这样总是报
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in db.php我现在只想把一些需要反复取的数据集方法全写到一个类里面可以调用,但这样写总是不对,该怎么写才行?
function fetch_all($sql, $id = '') {
$arr = array();
$query = $this->query($sql);
while($data = $this->fetch_array($query)) {
$id ? $arr[$data[$id]] = $data : $arr[] = $data;
}
return $arr;
}我在allpath.php类里面使用
class allpath
{
var $db;
function __construct(&$db) {
$this->db = $db;
}
function GetUserAllFiles($username,$path,$type)
{
$data = $this->db->fetch_all("select * from AllPath where UserName='$username' and Postion='$path' and not FileName is null and FileName<>'' order by id desc");
return $data; //此处想返回找到的结果集,总是报错
}
}在另外一个file.php里调用
$b=new allpath($db);
$rslist=$b->GetUserAllFiles($username,$path,"1");这样总是报
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in db.php我现在只想把一些需要反复取的数据集方法全写到一个类里面可以调用,但这样写总是不对,该怎么写才行?
测试了下,在phpmyadmin里竟然可以。汗。
但一般都这样写的:
and FileName IS NOT NULL and FileName!=''不过你这个错误,肯定是SQL语句错误引起的。你把QUERY的时候的错误抛出来看下就知道了。
出现那样的错误还是因为你SQL语句执行错误,应该是返回了false或其他什么
SQL只写成select * from allpath一样报错
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in db.php是不是上面哪里的语法写的不对,PHP支持这样直接返回结果集吗
class cls_mysql{
var $querynum = 0;
var $link;
var $histories; var $dbhost;
var $dbuser;
var $dbpw;
var $dbcharset;
var $pconnect;
var $tablepre;
var $time; var $goneaway = 5; function connect($dbhost, $dbuser, $dbpw, $dbname = '', $dbcharset = '', $pconnect = 0, $tablepre='', $time = 0) {
$this->dbhost = $dbhost;
$this->dbuser = $dbuser;
$this->dbpw = $dbpw;
$this->dbname = $dbname;
$this->dbcharset = $dbcharset;
$this->pconnect = $pconnect;
$this->tablepre = $tablepre;
$this->time = $time; if($pconnect) {
if(!$this->link = mysql_pconnect($dbhost, $dbuser, $dbpw)) {
$this->halt('Can not connect to MySQL server');
}
} else {
if(!$this->link = mysql_connect($dbhost, $dbuser, $dbpw)) {
$this->halt('Can not connect to MySQL server');
}
} if($this->version() > '4.1') {
if($dbcharset) {
mysql_query("SET character_set_connection=".$dbcharset.", character_set_results=".$dbcharset.", character_set_client=binary", $this->link);
} if($this->version() > '5.0.1') {
mysql_query("SET sql_mode=''", $this->link);
}
} if($dbname) {
mysql_select_db($dbname, $this->link);
} } function fetch_array($query, $result_type = MYSQL_ASSOC) {
return mysql_fetch_array($query, $result_type);
} function result_first($sql) {
$query = $this->query($sql);
return $this->result($query, 0);
} function fetch_first($sql) {
$query = $this->query($sql);
return $this->fetch_array($query);
} function fetch_all($sql, $id = '') {
$arr = array();
$query = $this->query($sql);
while($data = $this->fetch_array($query)) {
$id ? $arr[$data[$id]] = $data : $arr[] = $data;
}
return $arr;
} function cache_gc() {
$this->query("DELETE FROM {$this->tablepre}sqlcaches WHERE expiry<$this->time");
} function query($sql, $type = '', $cachetime = FALSE) {
$func = $type == 'UNBUFFERED' && @function_exists('mysql_unbuffered_query') ? 'mysql_unbuffered_query' : 'mysql_query';
if(!($query = $func($sql, $this->link)) && $type != 'SILENT') {
$this->halt('MySQL Query Error', $sql);
}
$this->querynum++;
$this->histories[] = $sql;
return $query;
} function affected_rows() {
return mysql_affected_rows($this->link);
} function error() {
return (($this->link) ? mysql_error($this->link) : mysql_error());
} function errno() {
return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
} function result($query, $row) {
$query = @mysql_result($query, $row);
return $query;
} function num_rows($query) {
$query = mysql_num_rows($query);
return $query;
} function num_fields($query) {
return mysql_num_fields($query);
} function free_result($query) {
return mysql_free_result($query);
} function insert_id() {
return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"), 0);
} function fetch_row($query) {
$query = mysql_fetch_row($query);
return $query;
} function fetch_fields($query) {
return mysql_fetch_field($query);
} function version() {
return mysql_get_server_info($this->link);
} function close() {
return mysql_close($this->link);
} function halt($message = '', $sql = '') {
$error = mysql_error();
$errorno = mysql_errno();
if($errorno == 2006 && $this->goneaway-- > 0) {
$this->connect($this->dbhost, $this->dbuser, $this->dbpw, $this->dbname, $this->dbcharset, $this->pconnect, $this->tablepre, $this->time);
$this->query($sql);
} else {
$s = '<b>Error:</b>'.$error.'<br />';
$s .= '<b>Errno:</b>'.$errorno.'<br />';
$s .= '<b>SQL:</b>:'.$sql;
exit($s);
}
}
}?>
$b=new allpath($db);
if($type == 'UNBUFFERED' && @function_exists('mysql_unbuffered_query')){
$query = @mysql_unbuffered_query($sql);
}else{
$query = @mysql_query($sql);
}
if(!$query && $type != 'SILENT') {
$this->halt('MySQL Query Error', $sql);
}
$this->querynum++;
$this->histories[] = $sql;
return $query;
}改下query看看会不会有错误。再不行就:
function __construct($db) {
$this->db = $db;
}但是这个错误还是应该是语句没有正确执行才导致的。