/**
* 整形字段自减
*
* @param array $key_arr, key数组
* @param string $fld, 字段名,必须为整形字段
* @param int $val, 自减值
* @return boolean
*/
public function decrement($key_arr, $fld, $val = 1)
{
$this->clearERR();
if ($this->server == false && $this->init() == false) {
return false;
}
$key = $this->config['KEY'];
if (!isset($key_arr[$key])) {
$this->errCode = 20081;
$this->errMsg = "dtc config:{$this->dtcKey} decrement key not set";
return false;
}
$fields = $this->config['FIELDS'];
if (!array_key_exists($fld, $fields)) {
$this->errCode = 20082;
$this->errMsg = "dtc config:{$this->dtcKey} decrement no field name {$fld}";
return false;
}
$val = intval($val);
if ($val < 1) {
$this->errCode = 20083;
$this->errMsg = "dtc config:{$this->dtcKey} invalid decrement value";
return false;
}
$req = new tphp_ttc_request($this->server, TPHP_DTC_OP_UPDATE);
if ($this->key_type == 1) {
$errCode = $req->set_key($key_arr[$key]);
} elseif ($this->key_type == 2) {
$errCode = $req->set_key_str($key_arr[$key]);
} else {
$this->errCode = 200111;
$this->errMsg = 'request failed';
return false;
}
if ($errCode != 0) {
$this->errCode = $errCode;
$this->errMsg = "dtc config:{$this->dtcKey} decrement:{$key}: set_key error";
return false;
}
if (count($key_arr) > 1) {
// 处理多字段key情况
foreach ($key_arr as $mk => $mv) {
if ($mk == $key) {
continue;
}
$chk = $this->checkMultikey($mk, $mv);
if (!$chk) {
return $chk;
}
$eq = $this->eqv($req, $mk, $mv);
if ($eq != 0) {
$this->errCode = 20085;
$this->errMsg = "dtc config:{$this->dtcKey} decrement:{$key}: set multikey error";
return false;
}
}
}
$add = $req->sub($fld, $val);
if ($add != 0) {
$this->errCode = 20086;
$this->errMsg = "dtc config:{$this->dtcKey} decrement:{$key}: sub error";
return false;
}
$result = new tphp_ttc_result();
$req->execute($result);
$this->result = $result;
$errCode = $result->result_code();
if ($errCode != 0) {
$this->dtcCode = $errCode;
$this->errCode = $errCode;
$this->errMsg = "dtc config:{$this->dtcKey} decrement:{$key} error,error code:{$errCode}";
return false;
}
return true;
}
