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PHP date_default_timezone_set() function (with example)

Hey everyone,

I'm trying to work with dates in PHP and came across the function `date_default_timezone_set()`. I'm a bit confused about how it works and how to use it effectively. Can someone please explain it to me and provide a good example?

To give you a bit of context, I'm building a web application that requires accurate handling of timezones. I want to display dates and times to the users based on their respective timezones. However, I'm not sure how to set the default timezone using `date_default_timezone_set()` and how it impacts the rest of my code.

If anyone has experience using this function and knows how to use it correctly, I would really appreciate your insights. Thank you in advance for your help!

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I've encountered the `date_default_timezone_set()` function while working on a PHP project, and it turned out to be quite helpful. This function allows you to set the default timezone for your script, which ensures accurate handling of dates and times.

To use it, all you need to do is pass a valid timezone identifier as a parameter. For example, if you want to set the default timezone to "Asia/Tokyo," you would write:


One thing to note is that the default timezone setting affects all the date and time functions used in your script. This means that when you call functions like `date()`, `strtotime()`, or `time()`, the resulting date and time will be based on the specified default timezone.

It's essential to set the default timezone at the beginning of your script, preferably in a global configuration file. This way, you ensure consistent time calculations and display throughout your entire application.

I've found it particularly useful when working with international applications that require displaying dates and times in the user's local timezone. By setting the default timezone correctly, you can easily handle conversions and provide accurate information to your users.

I hope this sheds some light on how to use `date_default_timezone_set()`. Let me know if you have any more questions or need further assistance!


Hey there!

I've worked with `date_default_timezone_set()` in PHP before, so I can definitely help you out. This function is used to set the default timezone used by all date/time functions in your PHP script. It's important because it ensures that the dates and times displayed to users are accurate for their respective timezones.

To use it, you need to provide the function with a valid timezone identifier. You can find a list of available timezones in the PHP documentation. For example, if you want the default timezone to be New York, you would use:


By setting the default timezone, PHP will automatically convert any dates and times you work with to the specified timezone. For instance, if you're storing dates in your database in UTC but want to display them to users in their local time, setting the default timezone correctly becomes crucial.

Remember to set the default timezone at the beginning of your script, preferably in a global configuration file, to ensure it applies throughout your application.

I hope this helps! Let me know if you have any further questions.

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