libraries:databaseconnector:databaseconnectorclass:sqlbindpreparedvalue
DatabaseConnector::SqlBindPreparedValue()
Definition
Binds a value or a variable (by value) 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 same value from the previously bound variable is used.
Bool SqlBindPreparedValue ( $Parameter, $Value, $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 “?”. - $Value Mixed
Value or Variable (by value) which should be bound with the used placeholder. The variable is bound by value. - $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 value/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 $iYearFrom = 1970; $iYearTo = 2011; // Binding the paramters by value $DB->SqlBindPreparedValue(':cityname', 'Chicago'); $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 the parameters $strNameOfCity = 'Boston'; $iYearTo = 2020; // Getting the result of users in 'Chicago' which were born between 1970 and 2011 // No changes in values! $arrResult = $DB->SqlGetPreparedLines(); // [...]
libraries/databaseconnector/databaseconnectorclass/sqlbindpreparedvalue.txt · Last modified: 2023/03/03 14:33 by michael.pohl