The search feature allows the user to find the specific data from a large number of records quickly. Generally, when a search request is submitted, the filtered data is fetched from the database. If you have a large number of records, the search feature is very useful to make the data list user-friendly.<\/p>\n
Search based on the latitude and longitude is used to find the records within a certain distance. Mostly, the location-based search is used for the property\/store\/place list. It allows finding the places within a defined radius. In this tutorial, we will show you how to integrate radius based location search<\/b> with latitude & longitude using PHP and MySQL.<\/p>\n
In the example script, we will implement the following functionality to demonstrate geographic searches within a certain radius with PHP and MySQL.<\/p>\n
For this example, we will create a The Search Query:<\/b> Search Form:<\/b>places<\/code> table with some basic fields in the MySQL database. The places<\/code> table holds the records which will be searched.<\/p>\nCREATE<\/span> TABLE<\/span> `places`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `title`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `address`<\/span> varchar<\/span>(200<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `latitude`<\/span> varchar<\/span>(25<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `longitude`<\/span> varchar<\/span>(25<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `created`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `modified`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `status`<\/span> tinyint(1<\/span>) NOT<\/span> NULL<\/span> DEFAULT<\/span> '1'<\/span> COMMENT<\/span> '1=Active | 0=Inactive'<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>)\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\nDatabase Configuration (dbConfig.php)<\/h2>\n
dbConfig.php<\/code> file is used to connect the database using PHP and MySQL. Specify the database host ($dbHost<\/code>), username ($dbUsername<\/code>), password ($dbPassword<\/code>), and name ($dbName<\/code>) as per your database credentials.<\/p>\n<?php
<\/span>\/\/ Database configuration
<\/span>$dbHost <\/span>= <\/span>\"localhost\"<\/span>;
<\/span>$dbUsername <\/span>= <\/span>\"root\"<\/span>;
<\/span>$dbPassword <\/span>= <\/span>\"root\"<\/span>;
<\/span>$dbName <\/span>= <\/span>\"codexworld\"<\/span>;
<\/span>\/\/ Create database connection
<\/span>$db <\/span>= new <\/span>mysqli<\/span>(<\/span>$dbHost<\/span>, <\/span>$dbUsername<\/span>, <\/span>$dbPassword<\/span>, <\/span>$dbName<\/span>);
<\/span>\/\/ Check connection
<\/span>if (<\/span>$db<\/span>-><\/span>connect_error<\/span>) {
die(<\/span>\"Connection failed: \" <\/span>. <\/span>$db<\/span>-><\/span>connect_error<\/span>);
}<\/span><\/pre>\nSearch Records Based on Radius Distance<\/h2>\n
\nInitially, all the records are fetched from the database with PHP and MySQL. <\/p>\n\n
\n
<?php
<\/span>\/\/ Include database configuration file
<\/span>require_once <\/span>'dbConfig.php'<\/span>;
<\/span>\/\/ If search form is submitted
<\/span>if(isset(<\/span>$_POST<\/span>[<\/span>'searchSubmit'<\/span>])){
if(!empty(<\/span>$_POST<\/span>[<\/span>'location'<\/span>])){
<\/span>$location <\/span>= <\/span>$_POST<\/span>[<\/span>'location'<\/span>];
}
if(!empty(<\/span>$_POST<\/span>[<\/span>'loc_latitude'<\/span>])){
<\/span>$latitude <\/span>= <\/span>$_POST<\/span>[<\/span>'loc_latitude'<\/span>];
}
if(!empty(<\/span>$_POST<\/span>[<\/span>'loc_longitude'<\/span>])){
<\/span>$longitude <\/span>= <\/span>$_POST<\/span>[<\/span>'loc_longitude'<\/span>];
}
if(!empty(<\/span>$_POST<\/span>[<\/span>'distance_km'<\/span>])){
<\/span>$distance_km <\/span>= <\/span>$_POST<\/span>[<\/span>'distance_km'<\/span>];
}
}
<\/span>\/\/ Calculate distance and filter records by radius
<\/span>$sql_distance <\/span>= <\/span>$having <\/span>= <\/span>''<\/span>;
if(!empty(<\/span>$distance_km<\/span>) && !empty(<\/span>$latitude<\/span>) && !empty(<\/span>$longitude<\/span>)){
<\/span>$radius_km <\/span>= <\/span>$distance_km<\/span>;
<\/span>$sql_distance <\/span>= <\/span>\" ,(((acos(sin((\"<\/span>.<\/span>$latitude<\/span>.<\/span>\"*pi()\/180)) * sin((`p`.`latitude`*pi()\/180))+cos((\"<\/span>.<\/span>$latitude<\/span>.<\/span>\"*pi()\/180)) * cos((`p`.`latitude`*pi()\/180)) * cos(((\"<\/span>.<\/span>$longitude<\/span>.<\/span>\"-`p`.`longitude`)*pi()\/180))))*180\/pi())*60*1.1515*1.609344) as distance \"<\/span>;
<\/span>$having <\/span>= <\/span>\" HAVING (distance <= <\/span>$radius_km<\/span>) \"<\/span>;
<\/span>$order_by <\/span>= <\/span>' distance ASC '<\/span>;
}else{
<\/span>$order_by <\/span>= <\/span>' p.id DESC '<\/span>;
}
<\/span>\/\/ Fetch places from the database
<\/span>$sql <\/span>= <\/span>\"SELECT p.*\"<\/span>.<\/span>$sql_distance<\/span>.<\/span>\" FROM places p <\/span>$having<\/span> ORDER BY <\/span>$order_by<\/span>\"<\/span>;
<\/span>$query <\/span>= <\/span>$db<\/span>-><\/span>query<\/span>(<\/span>$sql<\/span>);
<\/span>?><\/span><\/pre>\n
\nAn HTML form is provided to input the certain location and distance within the search for.<\/p>\n\n
<form<\/span> method<\/span>=\"post\"<\/span> action<\/span>=\"\"<\/span>><\/span>\r\n <input<\/span> type<\/span>=\"text\"<\/span> name<\/span>=\"location\"<\/span> id<\/span>=