prepared-statement

问题 Ive followed a bunch of different examples regarding using a SELECT in a prepared statement, but nothing is returned. EDIT I have changed my code a bit to look like this: $date1 = 2012-01-01; $date2 = 2012-01-31; $sql_con = new mysqli('db', 'username', 'password', 'database'); if($stmt = $sql_con->prepare("SELECT eventLogID FROM Country WHERE countryCode=? AND date BETWEEN ? AND ?")){ $stmt->bind_param("sss", $country_code, $date1,$date2); $stmt->execute(); $i=0; while ($stmt->fetch()){ $stmt

问题 Historically, I've always used mysql_real_escape_string() for all input derived from users that ends up touching the database. Now that I've completely converted over to MySQLi and I'm using prepared queries with bound parameters, have I effectively eliminated the possibility of SQL injection attacks? Am I correct in saying I no longer need mysql_real_escape_string()? This is my understanding and the basis of a project of mine: http://sourceforge.net/projects/mysqldoneright/files/Base

问题 Historically, I've always used mysql_real_escape_string() for all input derived from users that ends up touching the database. Now that I've completely converted over to MySQLi and I'm using prepared queries with bound parameters, have I effectively eliminated the possibility of SQL injection attacks? Am I correct in saying I no longer need mysql_real_escape_string()? This is my understanding and the basis of a project of mine: http://sourceforge.net/projects/mysqldoneright/files/Base

问题 I want to use a prepared statement in which the passed-in parameters are for the ORDER BY and LIMIT clauses, like so: $sql = 'SELECT * FROM table ORDER BY :sort :dir LIMIT :start, :results'; $stmt = $dbh->prepare($sql); $stmt->execute(array( 'sort' => $_GET['sort'], 'dir' => $_GET['dir'], 'start' => $_GET['start'], 'results' => $_GET['results'], ) ); But $stmt->fetchAll(PDO::FETCH_ASSOC); returns nothing. Can someone point out what's the wrong thing I am doing? Can it be done? If not,what

问题 I want to use a prepared statement in which the passed-in parameters are for the ORDER BY and LIMIT clauses, like so: $sql = 'SELECT * FROM table ORDER BY :sort :dir LIMIT :start, :results'; $stmt = $dbh->prepare($sql); $stmt->execute(array( 'sort' => $_GET['sort'], 'dir' => $_GET['dir'], 'start' => $_GET['start'], 'results' => $_GET['results'], ) ); But $stmt->fetchAll(PDO::FETCH_ASSOC); returns nothing. Can someone point out what's the wrong thing I am doing? Can it be done? If not,what

问题 Any ideas as to why my data isn't being updated? Is their something fundamentally wrong with how I'm writing my prepared statement? The form: while($log_dates = mysqli_fetch_assoc($q_log_dates_result)) { echo "<tr>"; echo "<input type='hidden' name='data[][log_dates_ID]' value='" . $log_dates['log_dates_ID'] . "'/>"; echo "<td><input type='text' name='data[][week_date]' value='" . $log_dates['week_date'] . "' /></td>"; echo "<td><input type='text' name='data[][crew_chief]' value='" . $log

问题 I am trying to use some PDO prepared statements for the first time to prevent a SQL Injection. I am quite new to SQL so the prepared statements are very bewildering to me. Do you think my SQL code with prepared statements is correct? <?php if ( $_SERVER["REQUEST_METHOD"] == 'POST' ) { $suche = htmlspecialchars($_POST['suche']); $stmt->bindParam(':suche', $suche); if (!empty($suche)) { $sql = new rex_sql; $sql->debugsql = 0; $stmt = $sql->prepare("SELECT * FROM rex_downloads WHERE dateiname

问题 I've got 2 tables where i want to join the header and the first column within an prepared statement. I've got managed to join the column, but how to join the header? Table1 : ID |Name ---------- 1 | A 2 | B 3 | C 4 | D 5 | E Table2 : TeamA|TeamB|Won|Lost -------------------- 1 | 2 | 5 | 3 1 | 3 | 2 | 4 1 | 4 | 9 | 1 2 | 5 | 5 | 5 3 | 1 | 2 | 4 Result-Matrix: | A | B | C | D | E ---------------------------- A | 0 | 2 | -2 | 8 | 0 B | 0 | 0 | 0 | 0 | 0 C | -2 | 0 | 0 | 0 | 0 SQL Fiddle 回答1: In

问题 I am trying to execute a prepared statment using the following: dbaBean.setPrepStmt(dbaBean.getConn().prepareStatement( "SELECT id, author, title, url, article_text, date_created " + "FROM articles WHERE " + "(EXTRACT(YEAR FROM date_created) = ? OR ? is null) " + "AND (EXTRACT(MONTH FROM date_created) = ? OR ? is null) " + "AND (EXTRACT(DAY FROM date_created) = ? OR ? is null) AND " + "(url = ? OR ? is null) " + "ORDER BY date_created DESC;")); dbaBean.getPrepStmt().setString(1, year);

问题 I am trying to implement a threaded comment system using php, and i found something already written, but i can not exactly see how to use it, i am not familiar at all with classes, so i was wondering if someone could help explain how i would use the code. the code below is from the website http://www.jongales.com/blog/2009/01/27/php-class-for-threaded-comments/ the code for the classes is as follows: class Threaded_comments { public $parents = array(); public $children = array(); /** * @param