Join Kevin Skoglund for an in-depth discussion in this video Store the time zone selection, part of Easy PHP Projects: Time Zone Conversion.
- [Voiceover] Now that we have a good select option…on our form, we're ready to write the code…to process the form value.…In real life, you'd probably wanna store this value…with the user's data in a database…so that it can stick around.…But rather than go to the processes setting up a database…for this small project, we're gonna use something simpler.…We're gonna use PHP's session to store the value.…That allow us to be able to set it and retrieve it.…And to simulate what it would be like…if we have a full database.…The way that we use sessions in PHP is…we first have to tell PHP to start the sessions.…
And we do that with session_start.…That function will tell PHP…to make sessions available to us.…After that, we can call the sessions super global…to access the sessions.…Dollar sign, underscore, all capital Session…and then in square brackets, the string that identifies…the value that we either want to set or retrieve.…It's called the session key.…I'm gonna be using user_tz_ident…to store the user's timezone identifier.…
Author
Released
3/11/2016- Understanding the history and purpose of time zones
- Setting a default time zone in PHP
- Using the PHP DateTime and DateTimeZone classes
- Working with daylight saving time transitions
- Allowing users to select their time zone
- Displaying times in the user's preferred time zone
- Calculating the current times of major cities
- Creating a complete time zone calculator
Skill Level Beginner
Duration
Views
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Introduction
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Welcome56s
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1. About Time Zones
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History6m 36s
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UTC and time zone offsets3m 33s
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2. Default Time Zone
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PHP time zone identifiers6m 18s
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Set default in php.ini6m 8s
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Set default at runtime4m 49s
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3. Working with Time Zones in PHP
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Understanding Unix time2m 39s
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PHP procedural functions6m 22s
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PHP DateTime6m 20s
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PHP DateTimeZone7m 17s
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DST transitions9m 1s
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4. User Time Zone Selection
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Create the form5m 23s
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Include the time zone offset4m 27s
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5. Respect the User's Time Zone
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Display the current time3m 19s
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Convert to user's time zone4m 45s
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Store dates in a database2m 44s
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6. Current World Times
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List time zones4m 30s
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Solution: Use major cities3m 12s
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Sort cities by offset5m 53s
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More efficient sorting6m 43s
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7. Time Zone Calculator
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Create the form4m 9s
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Time zone options function4m 47s
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Convert the time zone7m 40s
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Create date selectors9m 39s
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Create minute selector5m 30s
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Create hour selector6m 28s
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Conclusion
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Next steps32s
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Video: Store the time zone selection