PHP 多条件查询

时间 2019-12-08

标签 php 条件查询栏目 PHP 繁體版

原文原文链接

PHP+Mysql多条件多值查询示例代码：php

index.html代码：html

 
      <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" " 
     

         
     
 
      < 
      html 
      > 
     
 
      < 
      head 
      > 
     
 
      < 
      meta  
      http-equiv 
      = 
      "Content-Type"  
      content 
      = 
      "text/html; charset=UTF-8" 
      > 
     
 
      < 
      title 
      >SQL多条件查询示例</ 
      title 
      > 
     
 
      </ 
      head 
      > 
     
 
      < 
      body 
      > 
     
 
      < 
      form  
      method 
      = 
      "post"  
      action 
      = 
      "deal.php" 
      > 
     
 
      < 
      h1 
      >房屋出租</ 
      h1 
      > 
     
 
      房屋类型：< 
      select  
      name 
      = 
      "type" 
      > 
     
 
      < 
      option  
      value 
      = 
      "1" 
      >一居室</ 
      option 
      > 
     
 
      < 
      option  
      value 
      = 
      "2" 
      >二居室</ 
      option 
      > 
     
 
      < 
      option  
      value 
      = 
      "3" 
      >三居室</ 
      option 
      > 
     
 
      </ 
      select 
      > 
     
 
      面积：< 
      input  
      name 
      = 
      "area"  
      type 
      = 
      "text" 
      /> 
     
 
      地址：< 
      input  
      name 
      = 
      "addr"  
      type 
      = 
      "text" 
      /> 
     
 
      < 
      input  
      name 
      = 
      "btn"  
      type 
      = 
      "submit"  
      value 
      = 
      "搜索"  
      /> 
     
 
      </ 
      form 
      > 
     
 
      </ 
      body 
      > 
     
 
      </ 
      html 
      > 
     

deal.php文件：mysql

 
      <?php 
     
      //链接数据库 
     
      $conn 
      =mysql_connect( 
      "localhost" 
      , 
      "root" 
      , 
      "" 
      ); 
     
      //选择数据库 
     
      $db 
      =mysql_select_db( 
      "数据库名" 
      ); 
     
      //接收 参数 
     
      $type 
      = 
      $_POST 
      [ 
      'type' 
      ]; 
     
      $area 
      = 
      $_POST 
      [ 
      'area' 
      ]; 
     
      $addr 
      = 
      $_POST 
      [ 
      'addr' 
      ]; 
     
      //SQL语句主题 
     
      $query 
      = 
      "select * from room  where " 
      ;  
     
      //根据条件和传的值拼接sql语句 
     
      //判断面积不为空 
     
      if 
      ( 
      $type 
      != 
      "" 
      ){ 
     
      //而后根据具体面积分状况拼接 
     
      switch 
      ( 
      $type 
      ){ 
     
      case  
      1: 
     
      //一居室 
     
      $query 
      .= 
      " room_type=1" 
      ;  
     
      break 
      ; 
     
      case  
      2: 
     
      $query 
      .= 
      " room_type=2" 
      ; 
     
      break 
      ; 
     
      case  
      3: 
     
      $query 
      .= 
      " room_type=3" 
      ; 
     
      break 
      ; 
     
      } 
     
      } 
     
      //面积 
     
      if 
      ( 
      $area 
      != 
      "" 
      ){ 
     
      $query 
      .= 
      " and area ={$area}" 
      ; 
     
      } 
     
      //地址 
     
      if 
      ( 
      $addr 
      != 
      "" 
      ){ 
     
      $query 
      .= 
      " and addr like '%{$addr}%'" 
      ;  
      //地址 
     
      } 
     
      //执行查询 
     
      $result 
      =mysql_query( 
      $query 
      ); 
     
      //遍历结果 
     
      echo  
      "搜搜结果以下：" 
      ; 
     
      while 
      ( 
      $row 
      =mysql_fetch_array( 
      $result 
      )){ 
     
      echo  
      "地址：" 
      . 
      $row 
      [ 
      'addr' 
      ]; 
     
      echo  
      "" 
      ; 
     
      echo  
      "面积：" 
      . 
      $row 
      [ 
      'area' 
      ]; 
     
      echo  
      "" 
      ; 
     
      echo  
      "居室：" 
      . 
      $row 
      [ 
      'type' 
      ]; 
     
      echo  
      "" 
      ; 
     
      echo  
      "价格：" 
      . 
      $row 
      [ 
      'addr' 
      ]; 
     
      echo  
      "" 
      ; 
     
      //等等 
     
      } 
     
      ?>