libraries:databaseconnector:databaseconnectorclass:sqlbindpreparedparam
DatabaseConnector::SqlBindPreparedParam()
Definition
Binds a variable via reference to a placeholder of a prepared statement. The variable is bound to a placeholder within the prepared statement (placeholder can be a name in the format “:name” or “?” for a index based binding. Every time the prepared statement is executed, the current value from the bound variable is used.
Bool SqlBindPreparedParam ( $Parameter, &$Variable, $DataType = PDO::PARAM_STR )
Parameters
- $Parameter Mixed
Name (String) of the placeholder that was used in the prepared statement (like “:name”) or 1-based index (Integer) of the placeholders “?”. - &$Variable Mixed
Variable which should be bound with the used placeholder. The variable is bound by reference. - $DataType Integer (optional)
Optional datatype of the parameter as integer from the collection PDO::PARAM_xxx which controls, how the variable is handled within the query.
Default isPDO::PARAM_STR
.
Returns
- Bool
TRUE
if the variable could be bould properly orFALSE
if an error occured (see also GetLastError()).
Example
require_once 'DatabaseConnector/DatabaseConnector.php'; $DB = new DatabaseConnector(); // Connection to a SQLite3 database $DB->ConnectSQLite3( '/htdocs/data/database1.sqlite3' ); // Preparing the statement with two index-based placeholders and one by name $DB->SqlPrepareStatement("SELECT id, username FROM #_users WHERE city =':cityname' AND birthyear BETWEEN ? AND ?"); // Creating Variables to prepare the binding $strNameOfCity = 'Chicago'; $iYearFrom = 1970; $iYearTo = 2011; // Binding the paramters by reference $DB->SqlBindPreparedParam(':cityname', $strNameOfCity); $DB->SqlBindPreparedParam(1, $iYearFrom, PDO::PARAM_INT); $DB->SqlBindPreparedParam(2, $iYearTo, PDO::PARAM_INT); // Getting the result of users in 'Chicago' which were born between 1970 and 2011 $arrResult = $DB->SqlGetPreparedLines(); // [...] // Changing bound parameters $strNameOfCity = 'Boston'; $iYearTo = 2020; // Getting the result of users in 'Boston' which were born between 1970 and 2020 $arrResult = $DB->SqlGetPreparedLines(); // [...]
libraries/databaseconnector/databaseconnectorclass/sqlbindpreparedparam.txt · Last modified: 2023/03/03 14:09 by michael.pohl