When working with PHP, you may need to read the last ICU error message from a transliterator. This guide explains the operation, shows what its arguments mean, and uses three separate examples to make the result easier to understand.
Transliterator::getErrorMessage: Diagnostic messages supplement the operation return value.
What Is Transliterator::getErrorMessage in PHP?
Read the last ICU error message from a transliterator. Diagnostic messages supplement the operation return value.
Syntax:
$transliterator->getErrorMessage(): 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: Messages may vary between ICU versions and should not be compared as fixed status codes.
Example 1: Basic Usage
This example introduces the operation with a short and predictable input.
<?php
$transliterator = Transliterator::create("Any-Latin; Latin-ASCII");
echo $transliterator->getErrorMessage();
The code focuses on the main operation. Diagnostic messages supplement the operation return value.
Example 2: Another Case
Now compare a different input, locale, date, or option to see another part of the behavior.
<?php
$transliterator = Transliterator::create("Any-Latin; Latin-ASCII");
$transliterator->transliterate("Café");
echo $transliterator->getErrorMessage();
What changes? Messages may vary between ICU versions and should not be compared as fixed status codes.
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
$transliterator = Transliterator::create("Any-Latin; Latin-ASCII");
$value = $transliterator->transliterate("São Paulo");
if ($value === false) {
error_log((string) $transliterator->getErrorMessage());
}
The practical example demonstrates how to apply this operation to multiple values, a reusable task, or a validated input. Diagnostic messages supplement the operation return value.
Important Behavior and Edge Cases
- Core behavior: Diagnostic messages supplement the operation return value.
- Inputs and results: Messages may vary between ICU versions and should not be compared as fixed status codes.
- Alternatives: Transliterator::getErrorCode() returns the numeric ICU error state.
- Compatibility: The intl extension is required.
Comparison With Related Functions
| Function or Approach | When to Use It |
|---|---|
Transliterator::getErrorMessage | Read the last icu error message from a transliterator. |
| Related PHP approach | Transliterator::getErrorCode() returns the numeric ICU error state. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Using an incorrect input or option | Messages may vary between ICU versions and should not be compared as fixed status codes. |
| Confusing this API with a related operation | Transliterator::getErrorCode() returns the numeric ICU error state. |
| Assuming output is identical across environments | Check return values and required extensions or versions. The intl extension is required. |
Key Takeaways
- Transliterator::getErrorMessage helps you read the last ICU error message from a transliterator.
- Diagnostic messages supplement the operation return value.
- Messages may vary between ICU versions and should not be compared as fixed status codes.
Use Transliterator::getErrorMessage when you need to read the last ICU error message from a transliterator. 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.