174 lines
3.4 KiB
PHP
174 lines
3.4 KiB
PHP
<?php
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/*
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功能：数据库参数及连接
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*/
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function db_connection(){
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global $CONFIG;
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$host = $CONFIG["db_host"];
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$user = $CONFIG["db_user"];
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$password = $CONFIG["db_pass"];
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$database = $CONFIG["db_name"];
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$db = mysql_connect($host,$user,$password) or die("数据库连接中......");
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$select_db = mysql_select_db($database,$db) or die("数据库选择中......");
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mysql_query("set names utf8;");
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}
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/*
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功能：添加数据
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*/
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function db_add($table,$dataA) {
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if($table && count($dataA)>0) {
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$strleft='';
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$strright='';
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foreach($dataA as $key=>$val) {
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$strleft.=','.$key;
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$strright.=','.$val;
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}
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$strleft='insert into '.$table.' ('.ltrim($strleft,',').')';
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$strright=' values ('.ltrim($strright,',').')';
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$sql=$strleft.$strright;
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//echo $sql;
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//die;
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db_query($sql);
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return db_insert_id();
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}
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}
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/*
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功能：修改数据
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*/
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function db_mdf($table,$dataA,$id) {
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if($table && count($dataA)>0 && $id) {
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$setsql='';
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$wheresql='';
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foreach($dataA as $key=>$val) {
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$setsql.=', '.$key.'='.$val;
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}
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$setsql = ltrim($setsql,',');
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$wheresql = " id in(". $id .")";
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$sql='update '.$table.' set '.$setsql;
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$sql.=' where '.$wheresql;
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db_query($sql);
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//echo $sql;
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}
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}
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/*
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功能：取出单个数据
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*/
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function db_get_val($table,$id,$field) {
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$result=db_query("select $field from $table where id=$id");
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$rs = mysql_fetch_array($result);
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//echo "select $field from $table where id=$id";
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return $rs[$field];
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}
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/*
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功能：删除数据
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*/
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function db_del($table,$id) {
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if($table && $id) {
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$wheresql=' id in('. $id .')';
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$sql="delete from `".$table."` where ".$wheresql;
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db_query($sql);
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//echo $sql;
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}
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}
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/*
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功能：删除参数数据
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*/
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function db_dela($table,$where) {
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if($table && $where) {
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$sql="delete from `".$table."` where ".$where;
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//echo $sql;
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//die;
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db_query($sql);
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}
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}
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/*
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功能：调出一条信息
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*/
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function db_get_row($sql) {
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$result=db_query($sql);
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$rs = mysql_fetch_array($result);
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return $rs;
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}
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/*
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功能：调出多条信息数组
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*/
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function db_get_all($sql) {
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$result=db_query($sql);
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$rs = array();
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while( $row = mysql_fetch_array($result)){
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$rs[] = $row;
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}
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return $rs;
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}
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/*
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功能：获取分页数据
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*/
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function db_get_page($sql,$page,$page_size) {
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$page = $page*1?$page:1;
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$num_sql = "select count(1) as num from (".$sql.") t";
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$rsNum = db_get_row($num_sql);
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$total = $rsNum["num"];
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if (ceil($total/$page_size)<$page){
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$page = ceil($total/$page_size);
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}
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$start = ($page-1)*$page_size;
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$rs_sql = "select * from (".$sql.") t limit $start,$page_size";
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$rsData = db_get_all($rs_sql);
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$pageA = array();
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$pageA["page"] = $page;
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$pageA["page_size"] = $page_size;
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$pageA["total"] = $total;
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$pageA["data"] = $rsData;
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return $pageA;
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}
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/*
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功能：执行sql
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*/
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function db_query($sql,$dbconn='')
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{
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Return mysql_query($sql);
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}
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/*
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功能：返回sql值 数组
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*/
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function db_fetch_array($result)
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{
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Return mysql_fetch_array($result);
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}
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/*
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功能：返回行数
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*/
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function db_num_rows($result)
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{
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Return mysql_num_rows($result);
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}
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/*
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功能：返回新插入的ID
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*/
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function db_insert_id()
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{
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Return mysql_insert_id();
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}
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/*
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功能：关闭数据库
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*/
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function db_close()
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{
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mysql_close();
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}
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/*
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功能：返回前一次 MySQL 操作所影响的记录行数
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*/
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function db_affected_rows()
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{
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Return mysql_affected_rows();
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}
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?>
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