php - Snowflake odbc connector Query Timeout

I am trying to run my query through snowflake using odbc connector only for 30 sec....i.e if the query is taking more than 30 sec to execute it should stop and fail immediately.

In the odbc connection, I am passing one parameter query_timeout to make this happen. Code of my odbc connection:

<?php

class SnowflakeConnection{
    private $server;
    private $user_name;
    private $password;
    private $port;
    private $schema;
    private $warehouse;
    private $database;
    private $connection;
    private $dsn;

public function __construct($server,$port,$user,$password,$database,$schema,$warehouse){
    $this->server=$server;
    $this->port=$port;
    $this->user_name=$user;
    $this->password=$password;
    $this->database=$database;
    $this->schema=$schema;
    $this->warehouse=$warehouse;

    $this->dsn = "Driver=SnowflakeDSIIDriver;Server=" . $server;
    $this->dsn .= ";Port=" . $port;
    $this->dsn .= ";Schema=" . $schema;
    $this->dsn .= ";Warehouse=" . $warehouse;
    $this->dsn .= ";Database=" . $database;
    $this->dsn .= ";query_timeout = 30";
}
Copy code

but instead of 30sec, my query is running for 45sec and then failing and giving me an error. Error msg:

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