Why Don\'t `ini_set()`, `set_time_limit()`, and `max_execution_time` Work as Expected in Safe Mode?

ini_set, set_time_limit, and max_execution_time: Why They May Not Work

Many developers encounter issues when attempting to modify the maximum execution time for PHP scripts using functions like ini_set() or set_time_limit(). Despite setting the desired time limit locally, they observe that the default value of 30 remains unchanged on remote servers.

Root Cause: Safe Mode Restrictions

The PHP manual's Runtime Configuration section for max_execution_time sheds light on this behavior. It explains that altering this setting via ini_set() is prohibited in safe mode. To bypass this limitation, either disable safe mode or manually edit the time limit in the php.ini configuration file.

Applies to set_time_limit() as well

It's important to note that the same restriction applies to the set_time_limit() function, as per its documentation. When safe mode is active, neither function can override the default time limit.

Conclusion

To summarize, safe mode on remote servers prevents modifications to the execution time limit. Disable safe mode or manually edit the php.ini configuration file to resolve this issue.

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