动态 bindvars 的用法
private function bindVars($stmt,$params) {
if ($params != null) {
$types = ''; //initial sting with types
foreach($params as $param) { //for each element, determine type and add
if(is_int($param)) {
$types .= 'i'; //integer
} elseif (is_float($param)) {
$types .= 'd'; //double
} elseif (is_string($param)) {
$types .= 's'; //string
} else {
$types .= 'b'; //blob and unknown
}
}
$bind_names[] = $types; //first param needed is the type string
// eg: 'issss'
for ($i=0; $i
