git commitiesc:w:q:w:p:wqgit add *.html<a href="javascript:history.back()" class="btn btn-default">Go Back</a>git rm --cached new.filegit --versiongit clonegit initgit addgit statusgit commitgit pullgit pushtry{
    $stmt = $conn->prepare($query);
    $stmt->execute($exec_arr);
} catch(PDOException $e) {
    if($e->getCode() == 23000){
        array_push($errors, 'Technology already exists');
    } else {
        array_push($errors, 'Database error');
    }
}