What are some best practices for implementing a search function in PHP that searches through a database table with keywords?

Implementing a search function in PHP that searches through a database table with keywords involves creating a SQL query that uses the LIKE operator to match the keywords against the columns in the table. It is important to properly sanitize the input to prevent SQL injection attacks and to handle any potential errors gracefully. 

<?php
// Get the search keyword from the user input
$searchKeyword = $_GET['keyword'];

// Sanitize the input to prevent SQL injection
$searchKeyword = mysqli_real_escape_string($conn, $searchKeyword);

// Execute a SQL query to search for the keyword in the database table
$query = "SELECT * FROM table_name WHERE column_name LIKE '%".$searchKeyword."%'";
$result = mysqli_query($conn, $query);

// Check if any results were found
if(mysqli_num_rows($result) > 0) {
    // Display the search results
    while($row = mysqli_fetch_assoc($result)) {
        echo $row['column_name'] . "<br>";
    }
} else {
    echo "No results found";
}

// Close the database connection
mysqli_close($conn);
?>

Keywords

PHP search function database table keywords implementation

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