Questions about PHP Session_Start

Problems with PHP Session_Start
In PHP, occasionally encounter "Fatal error:maximum execution time of seconds exceeded in D:\website\controller\control.base.php on line 1 70 "error, this line is session_start. This error is often wrong when the speed is slow, and the page is stuck with new problems.
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Found in php.ini
Max_execution_time = 30;//set to the value you want, in seconds
(can also be set directly to unlimited time: max_execution_time = 0)
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Seems to have a relationship with the server.
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Session_Start the execution of such a long time is very problematic, the session theoretically read a file is not so slow, is not overloaded to access the database?
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1. Your question should be that during debugging, the access vectors are different tabs of the same browser window. Again, the tabs share a single cookie. The front is not finished, the back is only waiting
2, until the 170 lines before Session_Start, obviously your program has serious problems
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Server configuration problem, single script run time maximum is 30 seconds, please modify php.ini found in
Max_execution_time = 30;//set to the value you want, in seconds
Note: (can also be set directly to unlimited time: max_execution_time = 0) This is not very safe.
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"Fatal error:maximum execution time of the seconds exceeded in D:\website\controller means that this script runs beyond the maximum runtime of 30 seconds and resolves two kinds of methods:
The first type: Due to errors written by your program, such as a dead loop, etc.
FIX: Check code
The second type: The program needs, the code is correct, such as large file upload caused by
FIX: Modify php.ini found in
Max_execution_time = 30;//set to the value you want, in seconds
(can also be set directly to unlimited time: max_execution_time = 0)//recommendation cannot be set 0, this unsafe
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"Fatal error:maximum execution time of the seconds exceeded in D:\website\controller means that this script runs beyond the maximum runtime of 30 seconds and resolves two kinds of methods:
The first type: Due to errors written by your program, such as a dead loop, etc.
FIX: Check code
The second type: The program needs, the code is correct, such as large file upload caused by
FIX: Modify php.ini found in
Max_execution_time = 30;//set to the value you want, in seconds
(can also be set directly to unlimited time: max_execution_time = 0)//recommendation cannot be set 0, this unsafe
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You can use the auto session. So you don't have to write that statement every time.

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