When the PHP search engine does a word search from the data, it also searches the word sequences within the word, I want it to search only for words

Question

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<?php
// Include database config file
require_once 'dbConfig.php';

// If search form is submitted
$searchKeyword = $whrSQL = '';
if(isset($_POST['searchSubmit'])){
	$searchKeyword = $_POST['keyword'];
	if(!empty($searchKeyword)){
		// SQL query to filter records based on the search term


	$whrSQL = "WHERE (title LIKE '%".' '.$searchKeyword."%' OR description LIKE '%".$searchKeyword.' '."%')";




	}
}
// Get matched records from the database
$result = $db->query("SELECT * FROM posts $whrSQL ORDER BY id DESC");

// Highlight words in text
function highlightWords($text, $word){
	$text = preg_replace('#'. preg_quote($word) .'#i', '\\0', $text);
	return $text;
}

?>

<!DOCTYPE html>
<html lang="en-US">
<head>
<title> Codeat21 - PHP Highlight Keywords in Search Results with MySQL </title>
<meta charset="utf-8">

<!-- Stylesheet file -->
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="container">
	<div class="row">
		<h2>Posts List (<?php echo $result->num_rows; ?>) </h2>
		<!-- Search form -->
		<form method="post">
			<div class="input-group">
				<input type="text" name="keyword" class="form-control" value="<?php echo $searchKeyword; ?>" placeholder="Search by keyword..." >
					<div class="input-group-append">
						<input type="submit" name="searchSubmit" class="btn btn-outline-secondary btn-colors" value="Search">
						<a href="index.php" class="btn btn-outline-secondary btn-colors2">Reset</a>
					 </div>
			</div>
		</form>

		<!-- Search results -->
		<?php
			if($result->num_rows > 0){
				while($row = $result->fetch_assoc()){
					$title = !empty($searchKeyword)?highlightWords($row['title'], $searchKeyword):$row['title'];
					$description = !empty($searchKeyword)?highlightWords($row['description'], $searchKeyword):$row['description'];
		?>
		<div class="list-item">
			<h4><?php echo $title; ?></h4>
			<p><?php echo $description; ?></p>
		</div>
		<?php } }else{ ?>
			<div class="list-item">
				<p>No post(s) found...</p>
			</div>
		<?php } ?>


    </div>
</div>
</body>
</html>

it searchs everyything i do not want this . i want only search words

https://i.stack.imgur.com/dhHCe.png[^]

What I have tried:

i tried that

$x = " ".$searchKeyword;
$y = $searchKeyword." ";

	$whrSQL = "WHERE (title LIKE '%".' '.$x."%' OR description LIKE '%".$x.' '."%')";

bu it doesn't work

Posted 28-Jul-21 2:16am

kaixian 6000

Updated 28-Jul-21 3:02am

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Comments

Richard Deeming 29-Jul-21 4:56am

Your code is vulnerable to SQL Injection[^]. NEVER use string concatenation to build a SQL query. ALWAYS use a parameterized query.
PHP: SQL Injection - Manual[^]

1 solution

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Richard MacCutchan · Answer 1 · 2021-07-28T03:02:00

Solution 1

The LIKE function is a pattern search so you need to try some of the other operators; see SQL Wildcard Characters[^]

Posted 28-Jul-21 3:02am

Richard MacCutchan