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Editorial Team
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Asked: 2026-05-15T06:05:50+00:00

date_default_timezone_set(‘America/Guayaquil’); $cnn->execute(‘SET NAMES utf8’); $cnn->execute(‘SET GLOBAL time_zone = -5:00’); Hi, the code above is

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date_default_timezone_set('America/Guayaquil');
$cnn->execute('SET NAMES utf8');
$cnn->execute('SET GLOBAL time_zone = "-5:00"');

Hi, the code above is run everytime someone enters the website im developing. Does someone know what the impact (in performance) of those commands is?

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1 Answer

  1. Editorial Team

    Of the PHP date_default_timezone_set command: negligible

    Of the two MySQL commands: Unlikely to be significant.

    Don’t you mean SET SESSION rather than SET GLOBAL? If you’re doing it for just the connection…

    Edit: To expand on my answer, I have a script that gets included from just about every PHP script on my site that sets various configurations like date_default_timezone_set, starts sessions, defines functions and so on. It also sets the SQL mode to “TRADITIONAL” with the database connection. I think setting some configuration options is something you shouldn’t try to avoid.

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