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- <?php
- $query = $_GET['query'];
- // gets value sent over search form
- $min_length = 3;
- // you can set minimum length of the query if you want
- if(strlen($query) >= $min_length){ // if query length is more or equal minimum length then
- $query = htmlspecialchars($query);
- // changes characters used in html to their equivalents, for example: < to >
- $query = mysql_real_escape_string($query);
- // makes sure nobody uses SQL injection
- $raw_results = mysql_query("SELECT * FROM articles
- WHERE (`title` LIKE '%".$query."%') OR (`text` LIKE '%".$query."%')") or die(mysql_error());
- // * means that it selects all fields, you can also write: `id`, `title`, `text`
- // articles is the name of our table
- // '%$query%' is what we're looking for, % means anything, for example if $query is Hello
- // it will match "hello", "Hello man", "gogohello", if you want exact match use `title`='$query'
- // or if you want to match just full word so "gogohello" is out use '% $query %' ...OR ... '$query %' ... OR ... '% $query'
- if(mysql_num_rows($raw_results) > 0){ // if one or more rows are returned do following
- while($results = mysql_fetch_array($raw_results)){
- // $results = mysql_fetch_array($raw_results) puts data from database into array, while it's valid it does the loop
- echo "<p><h3>".$results['title']."</h3>".$results['text']."</p>";
- // posts results gotten from database(title and text) you can also show id ($results['id'])
- }
- }
- else{ // if there is no matching rows do following
- echo "No results";
- }
- }
- else{ // if query length is less than minimum
- echo "Minimum length is ".$min_length;
- }
- ?>
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