PHAR archives can package multiple resources into a single file. Phar::getSupportedSignatures() Method addresses a specific part of that process: lists supported PHAR archive signature methods. The examples distinguish archive-level effects from member-level effects.
What Is Phar::getSupportedSignatures() Method?
Lists supported PHAR archive signature methods.
Its syntax is:
Phar::getSupportedSignatures()
This function or method takes no parameters.
Return value: The declared return type is array. A signature is not equivalent to a trust decision about who created an archive.
Important: A signature is not equivalent to a trust decision about who created an archive.
Example 1: Basic Usage
The basic example focuses on the behavior of Phar::getSupportedSignatures() Method: lists supported PHAR archive signature methods. Inputs are defined locally or shown as application-controlled paths.
<?php
print_r(Phar::getSupportedSignatures());
The displayed value, file content or return status depends on the input and surrounding environment. Results involving local paths, identifiers or generated files are not fixed values.
Example 2: A Different Use Case
This second example illustrates another input or execution condition for Phar::getSupportedSignatures() Method. Notice the different checks, arguments, or output handling.
<?php
$signatureMethods = Phar::getSupportedSignatures();
foreach ($signatureMethods as $method) { echo $method . "\n"; }
This variation matters because a signature is not equivalent to a trust decision about who created an archive.
Practical Example: Working with Archive Entries
The following example demonstrates how Phar::getSupportedSignatures() Method fits into a more complete file or archive workflow, including inputs and appropriate checks.
<?php
$algorithms = Phar::getSupportedSignatures();
$hasSha256 = in_array("SHA-256", $algorithms, true);
var_dump($hasSha256);
The operation shown is an illustrative script. Adapt the filenames, required permissions, and error handling to your own controlled application environment before running it.
Important Behavior and Edge Cases
- Function behavior: Lists supported PHAR archive signature methods.
- Limitation: A signature is not equivalent to a trust decision about who created an archive.
Comparison With Related Functions
| Function or Method | Difference |
|---|---|
Phar::getSupportedSignatures() Method | Lists supported PHAR archive signature methods. |
Phar::getSignature() | Reads an individual archive signature, rather than listing available signature schemes. |
Use Phar::getSupportedSignatures() Method for the specific behavior described above. The related operation, Phar::getSignature(), serves a different purpose; do not substitute it unless that different behavior is intended.
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Confusing archive-level operations with operations on individual entries. | A signature is not equivalent to a trust decision about who created an archive. Confirm the expected archive format, member path and read/write permissions. |
| Treating Phar::getSignature() as an interchangeable replacement for Phar::getSupportedSignatures() Method. | Reads an individual archive signature, rather than listing available signature schemes. |
Key Takeaways
- Lists supported PHAR archive signature methods.
- A signature is not equivalent to a trust decision about who created an archive.
- Related operation: Phar::getSignature() — Reads an individual archive signature, rather than listing available signature schemes.
Phar::getSupportedSignatures() Method is useful when its specific behavior matches your application requirement. Keep paths controlled, check failures, and handle environment-dependent operations deliberately.