PHP script time-out settings

There are several ways to set the time-out for PHP script execution:
The default maximum execution time in php.ini is 30 seconds, which is specified by the Max_execution_time variable in php.ini, and if you have a lot of time to do the work, such as sending lots of emails to a large number of senders, or doing heavy data analysis work, The server will forcibly abort the executing program after 30 seconds, how to solve this problem.
First, in the php.ini inside set max_execution_time = 1800;
Second, through the PHP ini_set function set Ini_set ("Max_execution_time", "1800");
Third, through the Set_time_limit function set Set_time_limit (1800);

PHP script time-out settings