pdo

问题 I'm trying to write a mysql query that will match names from a table and the name in the database can contain dots or no dots. So, for example I would like my query string fast to match all of these: fast , f.ast , f.a.s.t etc. I use PHP, with PDO connecting to a .MDB database. I tried what I found here, with no success (I get error): SELECT * FROM table WHERE replace(col_name, '.', '') LIKE "%fast%" I think PDO for MDB databases is missing some functions :( Any solution? 回答1: Thanks to Doug,

问题 what is the best way to construct an SQL statement with PDO when it depends on whether some PHP variable are set? Here is an example; $query="SELECT * FROM table "; if($variable1 != "") { $query = $query . "WHERE variable1 = :variable1"; } if($variable2 != "") { $query = $query . " AND variable2 = :variable2"; } $query -> execute(array(':variable1' => $variable1, ':variable2' => $variable2)); I have a lot of these if statements and when binding the variables to the query I don't want to go

问题 This has been answered before, however I'm asking again for two reasons: I can't find any resources that utilize PDO, and regardless of that, all of the ones I've found consist of code without any comments or explanations, which makes it hard to interpret and adapt them to my use case. I need to be able to make a dropdown dynamically update itself based on the selection of the previous one, and if I change that selection, it should re-update itself without having to submit the form or reload

问题 This has been answered before, however I'm asking again for two reasons: I can't find any resources that utilize PDO, and regardless of that, all of the ones I've found consist of code without any comments or explanations, which makes it hard to interpret and adapt them to my use case. I need to be able to make a dropdown dynamically update itself based on the selection of the previous one, and if I change that selection, it should re-update itself without having to submit the form or reload

问题 $DBH = new PDO($dsn, $username, $password, $opt); $DBH->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $DBH->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); $STH = $DBH->prepare("INSERT INTO requests (id,imdbid,msg) VALUES ('',:imdbid,:msg)"); $STH->bindParam(':imdbid', $_POST['imdbid']); $STH->bindParam(':msg', $_POST['msg']); $STH->execute(); echo "<p>Successfully Requested ".$_POST['imdbid']."! Thanks!</p>"; Is there either some SQL Query that will check and insert or what? I

问题 So I have no idea what's going on here $link = new PDO('pgsql:dbname=' . $name . ';host=' . $host, $user, $password); $link->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); $link->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); try { $stmt = $link->prepare("SELECT s.*, d.invalid_column FROM students s ORDER BY s.student_id"); $stmt->execute(array(1)); } catch (PDOException $e) { print $e->getMessage(); } When I run this little code example, I expect an exception to be thrown (as d

问题 So I have no idea what's going on here $link = new PDO('pgsql:dbname=' . $name . ';host=' . $host, $user, $password); $link->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); $link->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); try { $stmt = $link->prepare("SELECT s.*, d.invalid_column FROM students s ORDER BY s.student_id"); $stmt->execute(array(1)); } catch (PDOException $e) { print $e->getMessage(); } When I run this little code example, I expect an exception to be thrown (as d

问题 trying to learn the ins and outs of PDO and I just got into this brick wall. My current PDO class is the following: class SimpleDatabase extends PDO { const DB_HOST='localhost'; const DB_USER='claudio'; const DB_PASS='claudio'; const DB_NAME='simpledb'; private $dbh; private $error; private $stmt; public function __construct(){ // Set DSN $dsn = 'mysql:host=' . self::DB_HOST . ';dbname=' . self::DB_NAME; // Set options $options = array( PDO::ATTR_PERSISTENT => true, PDO::ATTR_ERRMODE => PDO:

问题 As titled, I'm using MySQL PDO with a prepared statement, and when executing, I'm getting a single value (the last supplied value) pushed into all fields. Table looks like so: id (int - auto-increment) a_id (int) b_id (int) INSERT looks like this: INSERT INTO my_table(a_id, b_id) VALUES (:a_id, :b_id) Code to insert looks like this... $stmt = $conn->prepare($sql); foreach($params as $k => $v) { $stmt->bindParam( $k, $v ); } $stmt->execute(); The statement successfully inserts a value (which

问题 As titled, I'm using MySQL PDO with a prepared statement, and when executing, I'm getting a single value (the last supplied value) pushed into all fields. Table looks like so: id (int - auto-increment) a_id (int) b_id (int) INSERT looks like this: INSERT INTO my_table(a_id, b_id) VALUES (:a_id, :b_id) Code to insert looks like this... $stmt = $conn->prepare($sql); foreach($params as $k => $v) { $stmt->bindParam( $k, $v ); } $stmt->execute(); The statement successfully inserts a value (which