How to Use Prepared Statements with LIKE for Case-Insensitive Searches?

Prepared Statements and Case-Insensitive LIKE Searches

To leverage prepared statements for efficient and secure LIKE searches while maintaining case-insensitivity, avoid directly embedding variables into your SQL query. Instead, utilize parameterized queries. Here's how:

Construct your SQL query with placeholders:

<code class="language-sql">SELECT * FROM `users` WHERE username LIKE ?;</code>

Prepare the variable by prepending and appending wildcards (%), and then bind it to the placeholder using bind_param. This method handles case-insensitive matching effectively.

<code class="language-php">$likeVar = "%{$yourParam}%";
$stmt->bind_param("s", $likeVar);</code>

This approach is particularly crucial in dynamic scenarios, such as a player username search function that updates results in real-time as the user types. Preparing the statement with a parameterized LIKE clause prevents SQL injection vulnerabilities and allows for efficient, case-insensitive searches.

The above is the detailed content of How to Use Prepared Statements with LIKE for Case-Insensitive Searches?. For more information, please follow other related articles on the PHP Chinese website!