When working with PHP, you may need to get a translated region label. This guide explains the operation, shows what its arguments mean, and uses three separate examples to make the result easier to understand.
Locale::getDisplayRegion: A region such as CA or JP can be displayed in a selected interface language.
What Is Locale::getDisplayRegion in PHP?
Get a translated region label. A region such as CA or JP can be displayed in a selected interface language.
Syntax:
Locale::getDisplayRegion(string $locale, ?string $displayLocale = null): string|false
Parameters and return value: The signature above identifies the arguments and return type where the API has a single call. For topic guides, follow the sequence of calls in the examples. Always distinguish a returned value from an object or variable modified by reference.
Important: A locale may omit its region entirely; never assume the returned label is nonempty.
Example 1: Basic Usage
This example introduces the operation with a short and predictable input.
<?php
echo Locale::getDisplayRegion("en_CA", "en_US");
The code focuses on the main operation. A region such as CA or JP can be displayed in a selected interface language.
Example 2: Another Case
Now compare a different input, locale, date, or option to see another part of the behavior.
<?php
echo Locale::getDisplayRegion("fr_FR", "de_DE");
What changes? A locale may omit its region entirely; never assume the returned label is nonempty.
Practical Example: Applying It in an Application
Use the following separate example as a starting point for a small application task. Check any extension or environment requirements below before running it.
<?php
$localeCodes = ["en_GB", "en_US", "en_AU"];
foreach ($localeCodes as $code) {
echo $code . ": " . Locale::getDisplayRegion($code, "en_US") . PHP_EOL;
}
The practical example demonstrates how to apply this operation to multiple values, a reusable task, or a validated input. A region such as CA or JP can be displayed in a selected interface language.
Important Behavior and Edge Cases
- Core behavior: A region such as CA or JP can be displayed in a selected interface language.
- Inputs and results: A locale may omit its region entirely; never assume the returned label is nonempty.
- Alternatives: Locale::getRegion() retrieves the region code, not its translated name.
- Compatibility: The intl extension is required.
Comparison With Related Functions
| Function or Approach | When to Use It |
|---|---|
Locale::getDisplayRegion | Get a translated region label. |
| Related PHP approach | Locale::getRegion() retrieves the region code, not its translated name. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Using an incorrect input or option | A locale may omit its region entirely; never assume the returned label is nonempty. |
| Confusing this API with a related operation | Locale::getRegion() retrieves the region code, not its translated name. |
| Assuming output is identical across environments | Check return values and required extensions or versions. The intl extension is required. |
Key Takeaways
- Locale::getDisplayRegion helps you get a translated region label.
- A region such as CA or JP can be displayed in a selected interface language.
- A locale may omit its region entirely; never assume the returned label is nonempty.
Use Locale::getDisplayRegion when you need to get a translated region label. Start with the first example, compare the second, and adapt the practical example to your inputs. Confirm the return value and environment requirements before adding it to production code.