English
English
When dealing with timezone-related features in PHP, it’s incredibly useful to know all supported timezone abbreviations. PHP offers a built-in function called timezone_abbreviations_list(), which returns all abbreviations along with their detailed information. This article provides an in-depth explanation of how to use this function, along with practical code examples to help you integrate it into your projects and display all supported timezone abbreviations.
timezone_abbreviations_list() is a built-in PHP function that returns an array containing all timezone abbreviations. Each abbreviation corresponds to one or more timezones, and each timezone entry includes an offset in seconds and the timezone identifier.
The returned data structure is a multidimensional array, similar to the following:
[
"abbreviation" => [
[
"offset" => offset in seconds,
"dst" => whether daylight saving time is observed (bool),
"timezone_id" => "timezone identifier"
],
...
],
...
]
Below is a sample script demonstrating how to retrieve and format all timezone abbreviations and their corresponding detailed information.
<?php
// Get all timezone abbreviation data
$abbreviations = timezone_abbreviations_list();
<p>// Sort by abbreviation name for easier viewing<br>
ksort($abbreviations);</p>
<p>echo "<h2>List of All Supported Timezone Abbreviations</h2>";<br>
echo "<table border='1' cellpadding='5' cellspacing='0'>";<br>
echo "<tr><th>Abbreviation</th><th>Offset (Hours)</th><th>DST</th><th>Timezone Identifier</th></tr>";</p>
<p>foreach ($abbreviations as $abbr => $zones) {<br>
foreach ($zones as $zone) {<br>
$offsetHours = $zone['offset'] / 3600; // Convert seconds to hours<br>
$dst = $zone['dst'] ? 'Yes' : 'No';<br>
$timezoneId = $zone['timezone_id'] ?? 'N/A';</p>
<pre class="overflow-visible!"><div class="contain-inline-size rounded-2xl border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none rounded-t-2xl">php-template</div><div class="sticky top-9"><div class="absolute end-0 bottom-0 flex h-9 items-center pe-2"><div class="bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center gap-4 rounded-sm px-2 font-sans text-xs"><button class="flex gap-1 items-center select-none py-1" aria-label="复制"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>复制</button><button class="flex items-center gap-1 py-1 select-none"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>编辑</button></div></div></div><div class="overflow-y-auto p-4" dir="ltr"> echo "<tr>";
echo "<td>$abbr</td>";
echo "<td>$offsetHours</td>";
echo "<td>$dst</td>";
echo "<td>$timezoneId</td>";
echo "</tr>";
}
}
echo "";
?>
timezone_abbreviations_list() returns all timezone abbreviations.
ksort() is used to sort the abbreviations alphabetically for easier reading.
Each abbreviation may correspond to multiple timezones, hence the nested loops.
The offset is provided in seconds, so it is converted to hours for readability.
Determines whether daylight saving time is observed and displays “Yes” or “No”.
If there is no associated timezone identifier, “N/A” is displayed.
Display a complete list of timezone abbreviations for user selection.
Show timezone data in server logs or reports.
Provide reference data for cross-timezone time conversions.
timezone_abbreviations_list() is a highly practical function in PHP that helps developers retrieve all timezone abbreviation data along with detailed information. When combined with a table-based presentation, timezone data becomes clearer and more intuitive, making it suitable for both frontend displays and backend processing.
For more information on PHP time functions, visit gitbox.net.
