php-mysql数据库增删改查
php与mysql数据库增删改查的一些操作!
php与mysql通过修改完善一个php商城程序而记录的一些常用的php-mysql的基本应用!
1:数据库连接:
<?php
session_start();
$conn = mysql_connect('127.0.0.1','root','') or die(mysql_error);
mysql_select_db('shoping',$conn);
mysql_query("SET character_set_results = gb2312") ;
mysql_query("SET character_set_client = gb2312");
mysql_query("SET character_set_connection = gb2312");
2:嵌入其他:
<?php
include("conn.php");
?>
3:简单的数据库调用输出
<?php
$sql_news="select id,title from news order by id desc";
$rs_news=mysql_query($sql_news);
while(list($news_id,$title)=mysql_fetch_row($rs_news))
{
?>
<tr>
<td width="10"> </td>
<td><a href="*.php?id=<?php echo $news_id;?>" title="<?php echo $title;?>" target="_blank"><?php echo $title;?></a></td>
</tr>
<?php
}
?>
"> <?php
if($i%12==0)
{
echo "</tr><tr>";
}
$i++;
}
?>
</table>
另一种循环
<table>
<tr>
<?php
$sql_shoping_type="select id,name,img from shoping_type order by id";
$rs_shoping_type=mysql_query($sql_shoping_type);
$j=1;
while(list($id,$name,$img)=mysql_fetch_row($rs_shoping_type))
{
?><td></td>
.................................................................................
<?php
if($j%3==0)
{
?>
</tr>
<?php
}
$j++;
}
?>
</table>
5:根据一个字段进行数据库读取
<?php
$sql1="select img,url from img_news where id=1";
$rs_news=mysql_query($sql1);
while(list($img,$url)=mysql_fetch_row($rs_news))
{
?>
<tr>
<td colspan="3"><div align="center"><span class="zi"><a href="<?php echo $url;?>" target="_blank"><img name="shopping_new_r8_c1" src="<?php echo $img;?>" width="100%" height="104" border="0" alt=""></a></span></div></td>
</tr>
<?php
}
?>
6:根据一个id进行数据库读取,只提取6个!
<?php
$select_say="select id,title,date_time from news where newsdalei_id='16'";
$select_say.=" order by id desc";
//echo $select_say;
$rs_say = mysql_query($select_say);
$j=1;
while(list($id,$title,$date_time)=mysql_fetch_row($rs_say) and $j<=6)
{
?>
<tr>
<td width="5" align="right"> </td>
<td align="left"><a href="newsinfo.php?id=<?php echo $id;?>"><?php echo $title;?></a></td>
</tr>
<?php
$j++;
}
?>
7:同上,..另一种范围读取
<?php
$sql_product="select id,name from xiaolei where dalei_id='".$id."' limit 0,4";
//echo $sql_product;
$rs_product=mysql_query($sql_product);
$i=1;
while(list($xiaolei_id,$name)=mysql_fetch_row($rs_product))
{
?>
<td height="22" align="left"> <a href="shoplist.php?xiaolei_id=<?php echo $xiaolei_id;?>" target="_blank"><?php echo $name;?></a></td>
<?php
if($i%1==0)
{
echo "</tr><tr>";
}
$i++;
}
?>
7:读取来路的id:
$id=$_GET["id"];
$sql_news="select id,title,content,date_time from news where id=".$id;
或者
$sql_news="select id,title,content,date_time from news where id=".$_GET["id"];
8:插入:
$sql = "insert into product2(product_name,user_id) values('".$_POST["product_name"]."','".$_SESSION["session_shop_user_id"]."')";
9更改:
$sql="update product2 set product_name='".$_POST["product_name"]."',
if($_FILES['img_urld'][tmp_name]!="")
{
$sql.="img='".$url1a."',";
}
$sql.="reback_address='".$_POST["reback_address"]."',
user_id='".$_SESSION["session_shop_user_id"]."' where id='".$_POST["id"]."'";
10:删除:
<?php
include("http://www.cnblogs.com/conn.php");
$sql="delete from product2 where id=".$_GET["id"];
//echo $sql;
$rs=mysql_query($sql);
//var_dump($rs)."ddddddd";
echo "<script>alert('删除成功!');window.location='shop_center.php';</script>";
exit;
?>
11:返回前进
echo "<script>alert('提交成功!');window.location='shop_center.php';</script>";
exit;
}
else
{
echo "<script>alert('添加失败!');histroy.back();</script>";
exit;
}
12:简单的搜索与分页:
搜索部分
本页list.php
<form action="list.php" method="post" name="form1">
<tr class="forumRowHighlight">
<td bgcolor="#1865A5">按商品名称查询：
<input name="productname" type="text" value="<?php echo $_POST["productname"];?>"></td>
<td bgcolor="#1865A5">按品牌查询：
<input name="brand_name" type="text" value="<?php echo $brand_name;?>"></td>
<td bgcolor="#1865A5"><input type="submit" class="buttonstyle" value="查找"></td>
<td bgcolor="#1865A5"><input type="reset" class="buttonstyle" value="重置"></td>
</tr></form>
下部是分页与显示文章部分
<table>
<?php
$sql="select id,product_name from product where 1=1";
if(trim($_POST["productname"])!="")
{
$sql.=" and product_name like '%".trim($_POST["productname"])."%' order by id desc";
}
elseif(trim($brand_name)!="")
{
$sql.=" and product_brand like '%".trim($brand_name)."%' order by id desc";
}
else
{
$sql.=" order by id desc";
}
//echo $sql;
$rs = mysql_query($sql);
$pagesize = 15;
$cnt = mysql_num_rows($rs);
if($cnt==0)
{
echo "暂无数据";
exit;
}
$pagecount = ceil($cnt/$pagesize);
if(!isset($pageno)) $pageno=1;
if($pageno<1) $pageno = 1;
if($pageno>$pagecount) $pageno = $pagecount;
mysql_data_seek($rs,($pageno-1)*$pagesize) or die("无法定位数据！");
$j=0;
?>
.......................................内容循环部分
<?php
while(list($id,$product_name)=mysql_fetch_row($rs) and $j < $pagesize)
{
?>
<tr><td></td></tr>
<?php
$j++;
}
?>
</table>
.......................................内容循环部分
<table width="80%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td height="30" align="center" class="linkus">共<?php echo mysql_num_rows($rs);?>篇 <a href="list.php?pageno=1&productname=<?echo trim($_POST["productname"]);?>&brand_name=<?php echo trim($brand_name);?>">首页</a> <a href="list.php?pageno=<?php echo $pageno-1;?>&productname=<?echo trim($_POST["productname"]);?>&brand_name=<?php echo trim($brand_name);?>">上一页</a> <a href="list.php?pageno=<?php echo $pageno+1;?>&productname=<?echo trim($_POST["productname"]);?>&brand_name=<?php echo trim($brand_name);?>">下一页</a> <a href="list.php?pageno=<? echo $pagecount;?>&productname=<?echo trim($_POST["productname"]);?>&brand_name=<?php echo trim($brand_name);?>">尾页</a> 页次：<?php echo $pageno;?>/<?php echo $pagecount;?>页 <?php echo $pagesize?>篇/页转到：
<select name="pageno" onChange="MM_jumpMenu(this.value)"> <?php
for($i=1;$i<=$pagecount;$i++)
{
$option_list.="<option value='".$i."'";
if($pageno==$i) $option_list.="selected";
$option_list.=">第".$i."页</option>";
}
echo $option_list;
?> </select>
其中的js
<script>
<!--
function del()
{
document.all.cnt.value=2;
if(document.all.del1.value <= 0 &amp;#124;&amp;#124; document.all.del1.value=="")
{
alert("请选择要删除信息!");
return false;
}
else
{
if(confirm("确认要删除这些信息?"))
{
hrong.submit();
}
else
{
return false;
}
}
}
function clk(aa)
{
var cnt = Number(document.all.cnt.value);
var del = Number(document.all.del1.value);
if(aa)
{
cnt = cnt + 1;
del = del + 1;
document.all.cnt.value=cnt;
document.all.del1.value = del;
}
else
{
cnt =cnt - 1;
del =del - 1;
document.all.cnt.value=cnt;
document.all.del1.value=del;
}
}
function MM_jumpMenu(pageno)
{
window.location="list.php?pageno="+pageno+"&amp;productname="+document.all.productname.value+"&amp;brand_name="+document.all.brand_name.value;
}
//-->
</script>
13:一个onmouseover 属性
<tr id="tr<?php echo $j;?>" onMouseOver="FocusMe(this.id);" onDblClick="window.location='add.php?id=<?php echo $id; ?>'">
14:一个二级分类
<script language="javascript">
function ClickType(typeclass) {
frmUpdate.tType.value=selecttype(frmUpdate);
}
function inittype(myfrm)
{
var type1box;
type1box = myfrm.selJWHName;
for(i = 1; i <= tIndexes.length-1; i++)
{
oOption=document.createElement("OPTION");
oOption.text=tName[i];
oOption.value=tIndexes[i];
type1box.add(oOption);
}
for(i = 1; i <= tIndexes.length-1; i++)
{
if(tIndexes[i]=="<? echo trim($product_type1);?>"){
type1box.options[i-1].selected = true;
}
}
type1box.length = i-1;
}
function selecttype(myfrm)
{
var type1box;
type1box = myfrm.selJWHName;
seltype = parseInt(type1box.selectedIndex);
seltype++;
tIdx = tIdxs[seltype];
tContent = tContents[seltype];
if(tIdx != null && tContent != null)
{
type2box = myfrm.selStreetName;
type2box.length = 0;
for(i = 0; i < tIdx.length; i++)
{
oOption = document.createElement("OPTION");
oOption.text = tContent[i];
oOption.value = tIdx[i];
//str = /*i + "." + */tContent[i];
//type2box.options[i] = new Option(str, tIdx[i]);
type2box.add(oOption);
}
for(i = 0; i < tIdx.length; i++)
{
if(tIdx[i] == "<?php echo $newsxiaolei_id;?>"){
type2box.options[i].selected = true;
}
}
type2box.length = i;
}
}
</SCRIPT>
<script language="Javascript">
tIndexes = new Array;
tName = new Array;
tIdxs = new Array;
tContents = new Array;
<?
$sql = "select Id,Name from newsdalei order by id desc";
$rsjwh= mysql_query($sql);
$i = 1;
while(list($jwhid,$jwhName) = mysql_fetch_row($rsjwh)){
?>
tIndexes[<?echo $i;?>]=<?echo $jwhid;?>;
tName[<?echo $i;?>]="<?echo $jwhName;?>";
tIdxs[<?echo $i;?>] = new Array;
tContents[<?echo $i;?>] = new Array;
<?
$sql1 = "select id,Name from newsxiaolei where dalei_id=$jwhid";
$rs1 =mysql_query($sql1);
$j = 0;
while(list($tid,$tName)=mysql_fetch_row($rs1)){
?>
tIdxs[<?echo $i;?>][<?echo $j;?>] = <?echo $tid;?>;
tContents[<?echo $i;?>][<?echo $j;?>] = "<?echo $tName;?>";
<?
$j++;
}
$i++;
}
?>
</script>
<FORM name="frmUpdate" action="add_ok.php" method="post" enctype="multipart/form-data" onSubmit="return frmsubmit();">
<input type="hidden" name="id" value="<?php echo $_GET["id"];?>">
<INPUT name=tType type=hidden>
<td height="30" colspan="3" class="forumRowHighlight">
<br>
大类：<select name="selJWHName" class="formsty" onChange="ClickType(1);" style="width:290px;">
<script language=Javascript>inittype(frmUpdate);</script>
</select>
<br>
<br>
小类：<select name="selStreetName" class="formsty" style="width:290px;">
<script language="javascript">
ClickType(1);
</script>
</select>
</td>
<input name="Submit" type="submit" value="确定">
<input name="Submit" type="reset" value="重写"></td>
</FORM>
