[英]PHP MySQL search with multiple criteria
I have a search form in a website and would like to have several search terms which is input by the user to perform db search, terms as below: 我在网站上有一个搜索表单,希望有几个由用户输入以执行数据库搜索的搜索词,这些词如下:
Here is script to perform search with above term's input 这是使用上一词的输入执行搜索的脚本
public function get_property_list_by_search($start, $per_page, $keyword, $prop_for, $min, $state, $ptype, $max, $mysqli)
{
if(empty($start) && empty($per_page))
{
return 0;
}
$start = preg_replace('/[^0-9]/', '', $mysqli->real_escape_string($start));
$per_page = preg_replace('/[^0-9]/', '', $mysqli->real_escape_string($per_page));
$keyword = $mysqli->real_escape_string(stripslashes($keyword));
$prop_for = $mysqli->real_escape_string(stripslashes($prop_for));
$state = $mysqli->real_escape_string(stripslashes($state));
$ptype = $mysqli->real_escape_string(stripslashes($ptype));
$min_price = self::num_clean($mysqli->real_escape_string($min));
$max_price = self::num_clean($mysqli->real_escape_string($max));
$t1 = '';
$t2 = '';
$t3 = '';
$t4 = '';
$t5 = '';
if(isset($keyword) && !empty($keyword)){
$t1 = " AND `proj_title` LIKE '%".$keyword."%' OR `proj_addr` LIKE '%".$keyword."%' OR `proj_area` LIKE '%".$keyword."%'";
}
if(isset($prop_for) && !empty($prop_for)){
$t2 = " AND `proj_for`='".$prop_for."'";
}
if(isset($state) && !empty($state)){
$t3 = " AND `state`='".$state."'";
}
if(isset($ptype) && !empty($ptype)){
$t4 = " AND `proj_cat`='".$ptype."'";
}
//min & max
if((isset($min_price) && !empty($min_price)) && (isset($max_price) && !empty($max_price))){
$t5 = " AND `price` BETWEEN '".$min_price."' AND '".$max_price."'";
}
//min only
if(!empty($min_price) && empty($max_price)){
$t5 = " AND `price` >= '".$min_price."'";
}
//max only
if(empty($min_price) && !empty($max_price)){
$t5 = " AND `price` <= '".$max_price."'";
}
$sql = $mysqli->query("SELECT * FROM `project` WHERE `status`='1' ".
$t1." ".$t2." ".$t3." ".$t4." ".$t5." ".
"ORDER BY `posted_date` DESC LIMIT ".$start.", ".$per_page);
if($sql->num_rows > 0){
return $sql;
}else{
return false;
}
}
The query output will something like: 查询输出将类似于:
SELECT * FROM `project`
WHERE `proj_title` LIKE '%keywords%'
OR `proj_addr` LIKE '%keywords%'
OR `proj_area` LIKE '%keywords%'
AND `proj_for`='Sale' AND `state`='Somewhere' AND `proj_cat`='8' AND `price` BETWEEN '250000' AND '600000'
(Datatype for price
is DECIMAL(10,2)
, it stored value like 250000.00
) ( price
数据类型为DECIMAL(10,2)
,它存储的值如250000.00
)
However, the returned results is not like expected (not accurate), its also will come out a result with price more than 600000 and project category which is out of '8' which is not fancy for the end user to searching in the website. 但是,返回的结果与预期的(不准确的)不一样,它还会得出价格超过60万且项目类别超出“ 8”的结果,这对于最终用户在网站中进行搜索并不理想。
is there any way to refine on the query to perform more specific? 有什么方法可以优化查询以执行更具体的查询吗?
You're going to need parentheses. 您将需要括号。
SELECT * FROM `project` WHERE (`proj_title` LIKE '%keywords%' OR `proj_addr` LIKE '%keywords%' OR `proj_area` LIKE '%keywords%') AND `proj_for`='Sale' AND `state`='Somewhere' AND `proj_cat`='8' AND `price` BETWEEN '250000' AND '600000'
Without the parentheses it just has to match one of the criteria before the last OR. 如果没有括号,则只需在最后一个OR之前匹配一个条件。
Instead of taking these variables you should use ".=" operator. 不要使用这些变量,而应使用“。=”运算符。
/* $t1 = '';
$t2 = '';
$t3 = '';
$t4 = '';
$t5 = '';
*/
$q = "SELECT * FROM `property` WHERE `status`='1' ";
// You need to enclose all **OR** logical tests in parenthesis.
// Moreover most of the usages of isset function are useless,
// as your are initializing many variables
if($keyword && !empty($keyword)){
$q .= " AND (`p_title` LIKE '%".$keyword."%' OR `address` LIKE '%".$keyword."%' OR `area` LIKE '%".$keyword."%')";
}
if($prop_for && !empty($prop_for)){
// If you are using double quotes you really don't need handle to concatenation.
$q .= " AND `p_for`='$prop_for'";
}
if($state && !empty($state)){
$q .= " AND `state`='$state'";
}
if($ptype && !empty($ptype)){
$q .= " AND `p_category`='$ptype'";
}
//min only
if($min_price && !empty($min_price)){
$q .= " AND `price` >= '".$min_price."'";
}
//max only
if($max_price && !empty($max_price)){
$q .= " AND `price` <= '$max_price'";
}
// When you are not using OFFSET keyword,
//the first number after LIMIT keyword should be the number of records
$q .= " ORDER BY `posted_date` DESC LIMIT $per_page , $start;";
$sql = $mysqli->query($q);
if(isset($_SESSION['login']))
{
echo "<div align=\"right\"><strong><a href=\"index.php\"> Home </a>|
<a href=\"signout.php\">Signout</a>|
<a href=\"home.php\">Profile</a></strong></div>";
}
else
{
echo " ";
}
$con= mysql_connect("localhost","root","");
$d=mysql_select_db("matrimonial",$con);
$gender=$_POST['gender'];
$age1=$_POST['age1'];
$age2=$_POST['age2'];
$city=$_POST['city'];
$subcast=$_POST['subcast'];
$result=mysql_query("select * from matri where gender='$gender' and age between '$age1' and '$age2' and city='$city' and subcast='$subcast'");
if($gender && !empty($gender))
{
$result .= " AND `gender`='$gender'";
}
if($age1 && !empty($age1)){
$result .= " AND `age`='$age1'";
}
if($age2 && !empty($age2)){
$result .= " AND `age`='$age2'";
}
if($city && !empty($city)){
$result .= " AND `city`='$city'";
}
if($subcast && !empty($subcast)){
$result .= " AND `subcast`='$subcast'";
}
$result .= " select * from ";
$sql = $mysql->query($result);
how to run this code
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