When working with PHP, you may need to parse an ICU message with a one-off pattern. This guide explains the operation, shows what its arguments mean, and uses three separate examples to make the result easier to understand.
MessageFormatter::parseMessage: The static method combines pattern construction and parsing.
What Is MessageFormatter::parseMessage in PHP?
Parse an ICU message with a one-off pattern. The static method combines pattern construction and parsing.
Syntax:
MessageFormatter::parseMessage(string $locale, string $pattern, string $message): array|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: Always test failure before reading parsed indexes; parsing is not input validation for arbitrary formats.
Example 1: Basic Usage
This example introduces the operation with a short and predictable input.
<?php
print_r(MessageFormatter::parseMessage("en_US", "Count: {0, number}", "Count: 24"));
The code focuses on the main operation. The static method combines pattern construction and parsing.
Example 2: Another Case
Now compare a different input, locale, date, or option to see another part of the behavior.
<?php
var_dump(MessageFormatter::parseMessage("en_US", "Count: {0, number}", "Unknown"));
What changes? Always test failure before reading parsed indexes; parsing is not input validation for arbitrary formats.
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
$lines = ["Amount: 10", "Amount: 20"];
foreach ($lines as $line) {
$values = MessageFormatter::parseMessage("en_US", "Amount: {0, number}", $line);
if ($values !== false) {
echo $values[0] . PHP_EOL;
}
}
The practical example demonstrates how to apply this operation to multiple values, a reusable task, or a validated input. The static method combines pattern construction and parsing.
Important Behavior and Edge Cases
- Core behavior: The static method combines pattern construction and parsing.
- Inputs and results: Always test failure before reading parsed indexes; parsing is not input validation for arbitrary formats.
- Alternatives: MessageFormatter::parse() reuses a formatter instance.
- Compatibility: The intl extension is required.
Comparison With Related Functions
| Function or Approach | When to Use It |
|---|---|
MessageFormatter::parseMessage | Parse an icu message with a one-off pattern. |
| Related PHP approach | MessageFormatter::parse() reuses a formatter instance. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Using an incorrect input or option | Always test failure before reading parsed indexes; parsing is not input validation for arbitrary formats. |
| Confusing this API with a related operation | MessageFormatter::parse() reuses a formatter instance. |
| Assuming output is identical across environments | Check return values and required extensions or versions. The intl extension is required. |
Key Takeaways
- MessageFormatter::parseMessage helps you parse an ICU message with a one-off pattern.
- The static method combines pattern construction and parsing.
- Always test failure before reading parsed indexes; parsing is not input validation for arbitrary formats.
Use MessageFormatter::parseMessage when you need to parse an ICU message with a one-off pattern. 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.