public function update($table, $params, $wheres = array(), $timestamp_this = null)
{
if (is_null($timestamp_this)) {
$timestamp_this = self::$TIMESTAMP_WRITES;
}
// build the set part of the update query by
// adding each parameter into the set query string
$add_comma = false;
$set_string = '';
foreach ($params as $key => $val) {
// only add comma after the first parameter has been appended
if ($add_comma) {
$set_string .= ', ';
} else {
$add_comma = true;
}
// now append the parameter
$set_string .= "{$key}=:param_{$key}";
}
// add the timestamp columns if neccessary
if ($timestamp_this === true) {
$set_string .= ($add_comma ? ', ' : '') . 'date_modified=' . time();
}
// lets add our where clause if we have one
$where_string = '';
if (!empty($wheres)) {
// load each key value pair, and implode them with an AND
$where_array = array();
foreach ($wheres as $key => $val) {
$where_array[] = "{$key}=:where_{$key}";
}
// build the final where string
$where_string = 'WHERE ' . implode(' AND ', $where_array);
}
// build final update string
$sql_str = "UPDATE {$table} SET {$set_string} {$where_string}";
// now we attempt to write this row into the database
try {
$pstmt = $this->getMaster()->prepare($sql_str);
// bind each parameter in the array
foreach ($params as $key => $val) {
$pstmt->bindValue(':param_' . $key, $val);
}
// bind each where item in the array
foreach ($wheres as $key => $val) {
$pstmt->bindValue(':where_' . $key, $val);
}
// execute the update query
$successful_update = $pstmt->execute();
// if we were successful, return the amount of rows updated, otherwise return false
return $successful_update == true ? $pstmt->rowCount() : false;
} catch (PDOException $e) {
if (self::$LOG_ERRORS == true) {
error_log('DATABASE WRAPPER::' . print_r($e, true));
}
$this->pdo_exception = $e;
return false;
} catch (Exception $e) {
if (self::$LOG_ERRORS == true) {
error_log('DATABASE WRAPPER::' . print_r($e, true));
}
$this->pdo_exception = $e;
return false;
}
}
