PHP Phar::getStub() Method: Usage and Examples

PHAR archives can package multiple resources into a single file. Phar::getStub() Method addresses a specific part of that process: returns the executable PHP stub stored in a Phar archive. The examples distinguish archive-level effects from member-level effects.

What Is Phar::getStub() Method?

Returns the executable PHP stub stored in a Phar archive.

Its syntax is:

Phar::getStub()

This function or method takes no parameters.

Return value: The declared return type is string. A PharData archive does not necessarily have an executable stub.

Requirements: The Phar extension must be enabled. Creating or modifying executable PHAR archives generally requires the phar.readonly setting to be disabled before startup; do not change server configuration just to view this guide.

Important: A PharData archive does not necessarily have an executable stub.

Example 1: Basic Usage

The basic example focuses on the behavior of Phar::getStub() Method: returns the executable PHP stub stored in a Phar archive. Inputs are defined locally or shown as application-controlled paths.

<?php

$archivePath = sys_get_temp_dir() . "/example-package.phar";
$archive = new Phar($archivePath);
$stubSource = $archive->getStub();
echo strlen($stubSource);

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::getStub() Method. Notice the different checks, arguments, or output handling.

<?php

$archive = new Phar(__DIR__ . "/application.phar");
$stubSource = $archive->getStub();
var_dump(str_contains($stubSource, "__HALT_COMPILER"));

This variation matters because a PharData archive does not necessarily have an executable stub.

Practical Example: Working with Archive Entries

The following example demonstrates how Phar::getStub() Method fits into a more complete file or archive workflow, including inputs and appropriate checks.

<?php

$archive = new Phar(__DIR__ . "/cli-tool.phar");
$stub = $archive->getStub();
if ($stub === "") { echo "No custom stub"; } else { echo "Stub length: " . strlen($stub); }

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: Returns the executable PHP stub stored in a Phar archive.
• Limitation: A PharData archive does not necessarily have an executable stub.
• Availability: The Phar extension must be enabled. Creating or modifying executable PHAR archives generally requires the phar.readonly setting to be disabled before startup; do not change server configuration just to view this guide.

Comparison With Related Functions

Use Phar::getStub() Method for the specific behavior described above. The related operation, Phar::createDefaultStub(), serves a different purpose; do not substitute it unless that different behavior is intended.

Common Beginner Mistakes

Key Takeaways

• Returns the executable PHP stub stored in a Phar archive.
• A PharData archive does not necessarily have an executable stub.
• Related operation: Phar::createDefaultStub() — Generates a default stub string; getStub() reads the existing stub.

Phar::getStub() Method is useful when its specific behavior matches your application requirement. Keep paths controlled, check failures, and handle environment-dependent operations deliberately.