php原码初级自定义数据库操作方法
<?php
/**
*Project:消费项目
*File:配置文件
*Author:LX
*/
//链接数据库 开始
date_default_timezone_set('prc');
$pm = mysql_connect("localhost","joinon","a5v6s0k3");
if(!$pm) {
die(mysql_errno());
}
mysql_query("set names utf8",$pm) or die(mysql_errno());
mysql_select_db("joinon_pm",$pm);
//链接数据库 结束
//添加数据
function query_insert($table, $data) {
foreach ($data as $key => $value) {
$k .= $key.',';
$v .= "'".$value."',";
}
$k = rtrim($k, ",");
$v = rtrim($v, ",");
$sql = "insert into ".$table." (".$k.") values (".$v.")";
mysql_query($sql);
}
//更新数据
function query_update($table, $data , $where) {
foreach ($data as $key => $value) {
$sql = "update ".$table." set ".$key."='".$value."' where ".$where;
mysql_query($sql);
}
}
//查询单条数据
function query_single($value,$table,$name,$g_name, $else) {
$sql = "select ".$value." from ".$table." where ".$name."='".$g_name."'".$else;
$_res = mysql_query($sql);
$res = mysql_fetch_assoc($_res);
return $res[$value];
}
//分页函数
/*
$cp_sql = "SELECT * FROM component_buy WHERE cp_id!='' ".@$where1.@$where2.@$where3." ORDER BY cp_date DESC";
$pagesiz = 12;
$start = (isset($_GET['page']))?(int)$_GET['page']:1;
$_sql = $db->query($cp_sql);
$_num = mysql_num_rows($_sql);
$per = ($_num%$pagesiz==0)?(int)($_num/$pagesiz):ceil($_num/$pagesiz);
$the_sql = $cp_sql." limit ".($start-1)*$pagesiz." , $pagesiz";
$cp_result = $db-> query($the_sql);
*/
function page_fy($pram){ ///分页代码 例如 ：page_fy('customer_no');
global $start,$_num,$per;
if($_SERVER['QUERY_STRING']=='') {
$query_page = "?";
} else {
$page_fy = explode('&', $_SERVER['QUERY_STRING']);
if(count($page_fy)==1) {
$and = '';
//地址栏存在一个 QUERY_STRING 时
if($_SERVER['QUERY_STRING']!='' && !strstr($_SERVER['QUERY_STRING'], 'page')) {
$and = '&';
}
} else {
$and = '&';
//地址栏第一个 QUERY_STRING 为空时
if($page_fy[0]=='') {
$and = '';
}
}
$query_page = "?".$_SERVER['QUERY_STRING'].$and;
}
$query_page = preg_replace("/page=\d*|&page=\d*/","",$query_page);
echo "<center>";
if($_num!=0) {
echo "<br/>共".$per."页/".$_num."条记录";
if($start>1) {
echo " <a href='".$query_page."page=1'>首页</a>";
$prev = ($start>1)?($start-1):1;
echo " <a href='".$query_page."page=$prev'>上一页</a>";
}
############# num start
$header_page = $start-4;
if($header_page<1){
$header_page = 1;
}
$foot_page=$header_page+9;
if($foot_page>$per){
$foot_page = $per;
}
if($per>1){
for($i=$header_page;$i<=$foot_page;$i++){
if($start==$i)
echo " <B>$i</B> ";
else
echo " <a href='".$query_page."page=$i'>$i</a> ";
}
}
############ num end
if($start<$per){
$next = ($start<$_num)?$start+1:$per;
echo " <a href='".$query_page."page=$next'>下一页</a>";
echo " <a href='".$query_page."page=$per'>末页</a>";
}
if($per>1) {
echo ' <input type="text" name="" size=1 onchange="location.href=\''.$query_page.'page=\'+this.value"> <input type="button" value="跳转">';
}
}
echo "</center>";
}