例子,php字符串分割:
- $keyword="asp php,jsp";
- $keyword=str_replace(" "," ",$keyword);
- $keyword=str_replace(" ",",",$keyword);
- $keyarr=explode(',',$keyword);
- for($index=0;$index{
- $whereSql .= " And (arc.title like '%$keyarr[$index]%' Or arc.keywords like '%$keyarr[$index]%') ";
- }
- echo $whereSql;
为了同时支持空格与逗号,需要提前替换为统一的逗号,就是先将空格都替换为逗号,然后再通过逗号分割字符串,然后循环拼接sql查询语句。
str_replace就是php中常用的字符串替换函数。
explode就是php中常用的字符串分割为数组的函数。
PHP实现多条件查询实例代码
经常会用到多条件查询,分享一个一个二手房屋查询的例子。
在本例中,要实现能够通过地理位置,物业类型,房屋价格,房屋面积及信息发布日期等多个条件查询到客户所需的资料。
查询文件(search.php)
一、生成查询语句:
-
- $conn=mysql_connect("localhost","root","");
- $db=mysql_select_db("lingyun");
- $query="select * from message where tradetype='".$tradetype."'"; //交易类型,如出租,出售
- $SQL=$SQL . "wuye='" . $wuye . "'";
- if($housetype!="不限"){
- $query.=" && housetype='".$housetype."'"; //房屋类型,如二室一厅,三室二厅
- }
- if($degree!="不限"){
- $query.=" && degree='".$degree."'"; //新旧程度
- }
- if($wuye!="不限"){
- $query.=" && wuye='".$wuye."'"; //物业类型 如住房,商铺
- }
- if($price2!=""){
- switch($price1){
- case "大于":
- $query.=" && price>'".$price2."'"; //价格
- break;
- case "等于":
- $query.=" && price='".$price2."'";
- break;
- case "小于":
- $query.=" && price<'".$price2."'";
- break;
- }
- }
- if($area2!=""){
- switch($area1){
- case "大于":
- $query.=" && area>'".$area2."'"; //面积
- break;
- case "等于":
- $query.=" && area='".$area2."'";
- break;
- case "小于":
- $query.=" && area<'".$area2."'";
- break;
- }
- }
- switch($pubdate){ //发布日期
- case "本星期内":
- $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=7";
- break;
- case "一个月内":
- $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=30";
- break;
- case "三个月内":
- $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=91";
- break;
- case "六个月内":
- $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=183";
- break;
- }
- if($address!=""){
- $query.=" && address like '%$address%'"; //地址
- }
- if(!$page){
- $page=1;
- }
- ?>
二、输出查询结果:
- if ($page){
- $page_size=20;
- $result=mysql_query($query);
- #$message_count=mysql_result($result,0,"total");
- $message_count=10;
- $page_count=ceil($message_count/$page_size);
- $offset=($page-1)*$page_size;
- $query=$query." order by date desc limit $offset, $page_size";
- $result=mysql_query($query);
- if($result){
- $rows=mysql_num_rows($result);
- if($rows!=0){
- while($myrow=mysql_fetch_array($result)){
- echo "
"; - echo "
| "; - echo "
$myrow[id] $myrow[tradetype] $myrow[address] $myrow[wuye]($myrow[housetype])[$myrow[date]]"; - echo "
| "; - echo "
详细内容 | "; - echo "
"; - }
- }
- else echo "
没有找到满足你条件的记录& lt;/td> | "; - }
- $prev_page=$page-1;
- $next_page=$page 1;
- echo "";
- echo " 第".$page."/".$page_count."页 ";
- if ($page<=1){
- echo "|第一页|";
- }
- else{
- echo "|第一页|";
- }
- echo " ";
- if ($prev_page<1){
- echo "|上一页|";
- }
- else{
- echo "|上一页|";
- }
- echo " ";
- if ($next_page>$page_count){
- echo "|下一页|";
- }
- else{
- echo "|下一页|";
- }
- echo " ";
- if ($page>=$page_count){
- echo "|最后一页|";
- }
- else{
- echo "|最后一页|";
- }
- echo "";
- }
- else{
- echo "
现在还没有房屋租赁信息! "; - }
- echo "
"; - ?>
|