When a PHP application needs to lists the four supported floating-point interval boundary policies, choosing the right API and checking its results helps keep code understandable and dependable. This guide explains Random\IntervalBoundary::cases with focused examples and important details.
What Is Random\IntervalBoundary::cases in PHP?
Random\IntervalBoundary::cases lists the four supported floating-point interval boundary policies. Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects.
Syntax:
Random\IntervalBoundary::cases() : arrayParameters and return value: Parameters: none. Check the return value or modified object rather than assuming the operation always succeeds.
Important: Random results change between runs. The examples show the structure of the output, not a fixed random value.
Example 1: Basic Usage
Start with a compact input so the main operation is visible.
<?php
foreach (Random\IntervalBoundary::cases() as $case) { echo $case->name . PHP_EOL; }
Output: The result varies between executions.
Lists the four supported floating-point interval boundary policies. Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects.
Example 2: A Different Input
The next example changes the input or option to illustrate another behavior.
<?php
echo count(Random\IntervalBoundary::cases());
Output: The result varies between executions.
Compare this result with the first example. Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects.
Practical Example: Applying the Function
This example combines the API with a realistic processing step and shows where to check its result.
<?php
$names = array_map(fn($case) => $case->name, Random\IntervalBoundary::cases());
print_r($names);
Output: The result varies between executions.
Adapt the inputs to your application and validate the output before storing or displaying it. Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects.
Important Behavior and Edge Cases
- Main purpose: Lists the four supported floating-point interval boundary policies.
- Errors and boundaries: Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects.
- Environment: Random results change between runs. The examples show the structure of the output, not a fixed random value.
Comparison With Related Functions
| Function or Approach | When to Use It |
|---|---|
Random\IntervalBoundary::cases | Lists the four supported floating-point interval boundary policies. |
| Random\Randomizer::getFloat | Consider this alternative when you need different behavior or a different abstraction. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Assuming the operation succeeds for every input | Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects. |
| Ignoring runtime requirements or variable output | Random results change between runs. The examples show the structure of the output, not a fixed random value. |
| Using the wrong API for the goal | Compare Random\IntervalBoundary::cases with Random\Randomizer::getFloat before selecting an approach. |
Key Takeaways
- Lists the four supported floating-point interval boundary policies.
- Enum cases are ClosedOpen, ClosedClosed, OpenClosed, and OpenOpen; their actual values are enum objects.
- Random results change between runs. The examples show the structure of the output, not a fixed random value.
Use Random\IntervalBoundary::cases when you need to lists the four supported floating-point interval boundary policies. The three examples move from a simple call to a practical use. Validate all external input and handle failures explicitly.