When a PHP application needs to uses time_nanosleep to process its supported input, choosing the right API and checking its results helps keep code understandable and dependable. This guide explains time_nanosleep with focused examples and important details.
What Is time_nanosleep in PHP?
time_nanosleep uses time_nanosleep to process its supported input. Actual sleep duration can exceed the requested duration due to operating-system scheduling.
Syntax:
time_nanosleep(seconds, nanoseconds) : array|boolParameters and return value: Parameters: <required> int $seconds; <required> int $nanoseconds. Check the return value or modified object rather than assuming the operation always succeeds.
Important: The code examples use representative input rather than production credentials. Confirm that the required PHP extension is installed.
Example 1: Basic Usage
Start with a compact input so the main operation is visible.
<?php
var_dump(time_nanosleep(0,1000000));
Uses time_nanosleep to process its supported input. Actual sleep duration can exceed the requested duration due to operating-system scheduling.
Example 2: A Different Input
The next example changes the input or option to illustrate another behavior.
<?php
var_dump(time_nanosleep(0,500000));
Compare this result with the first example. Actual sleep duration can exceed the requested duration due to operating-system scheduling.
Practical Example: Applying the Function
This example combines the API with a realistic processing step and shows where to check its result.
<?php
$start = hrtime(true);
time_nanosleep(0, 2000000);
printf("%.1f ms", (hrtime(true)-$start)/1e6);
Adapt the inputs to your application and validate the output before storing or displaying it. Actual sleep duration can exceed the requested duration due to operating-system scheduling.
Important Behavior and Edge Cases
- Main purpose: Uses time_nanosleep to process its supported input.
- Errors and boundaries: Actual sleep duration can exceed the requested duration due to operating-system scheduling.
- Environment: The code examples use representative input rather than production credentials. Confirm that the required PHP extension is installed.
Comparison With Related Functions
| Function or Approach | When to Use It |
|---|---|
time_nanosleep | Uses time_nanosleep to process its supported input. |
| Related PHP functions | 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 | Actual sleep duration can exceed the requested duration due to operating-system scheduling. |
| Ignoring runtime requirements or variable output | The code examples use representative input rather than production credentials. Confirm that the required PHP extension is installed. |
| Using the wrong API for the goal | Compare time_nanosleep with Related PHP functions before selecting an approach. |
Key Takeaways
- Uses time_nanosleep to process its supported input.
- Actual sleep duration can exceed the requested duration due to operating-system scheduling.
- The code examples use representative input rather than production credentials. Confirm that the required PHP extension is installed.
Use time_nanosleep when you need to uses time_nanosleep to process its supported input. The three examples move from a simple call to a practical use. Validate all external input and handle failures explicitly.