Intermediate LevelPHP 8+
How do you compile PHP applications and CLI tools into standalone executable PHAR archives?
❓ Interview Prompt: Explain PHAR (PHP Archive) files, bundling code and vendor dependencies into a single binary, stubs, and execution.
A PHAR (PHP Archive) file packages an entire PHP application, source files, template assets, and Composer vendor dependencies into a single executable archive file (similar to Java '.jar' files).
Use Cases:
Distributing CLI utilities (like Composer itself, PHPUnit, PHP-CS-Fixer, and Laravel Envoy) as single self-contained binary files.
Key Components:
•
Phar Class: Build archive from directory.
•
Phar Stub: Small PHP script executed automatically when the PHAR file is run ('setStub()').
Code Implementation Example
php
<?php
// Build script compiling application into app.phar archive
$pharFile = 'app.phar';
if (file_exists($pharFile)) unlink($pharFile);
$phar = new Phar($pharFile);
$phar->startBuffering();
// Add source files and vendor dependencies
$phar->buildFromDirectory(__DIR__ . '/src');
$phar->setStub($phar->createDefaultStub('index.php'));
$phar->stopBuffering();
echo "Compiled $pharFile successfully!";💡Compiling a PHP codebase into a executable PHAR archive file.
🎯 Interview Key Takeaway
PHAR archives package PHP codebases and vendor dependencies into single executable binary files for CLI tool distribution.
#PHAR#CLI#Packaging#Intermediate
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