### Implement Custom Unit Test Engine in PHP

Source: https://context7.com/phorgeit/arcanist/llms.txt

Extends ArcanistUnitTestEngine to integrate custom testing frameworks. This example demonstrates running pytest for Python files, mapping source files to test files, and handling test results.

```php
<?php

final class CustomUnitTestEngine extends ArcanistUnitTestEngine {

  public function run() {
    $results = array();
    $paths = $this->getPaths();

    // Find test files based on modified paths
    $test_files = $this->findTestFiles($paths);

    foreach ($test_files as $test_file) {
      $result = new ArcanistUnitTestResult();
      $result->setName($test_file);

      $start_time = microtime(true);

      // Execute test
      $future = new ExecFuture('python -m pytest %s --tb=short', $test_file);
      list($err, $stdout, $stderr) = $future->resolve();

      $result->setDuration(microtime(true) - $start_time);

      if ($err === 0) {
        $result->setResult(ArcanistUnitTestResult::RESULT_PASS);
      } else {
        $result->setResult(ArcanistUnitTestResult::RESULT_FAIL);
        $result->setUserData($stdout . $stderr);
      }

      $results[] = $result;
    }

    return $results;
  }

  private function findTestFiles(array $paths) {
    $test_files = array();
    foreach ($paths as $path) {
      // Map source files to test files
      if (preg_match('/^src
omino(.*)\\.py$/', $path, $matches)) {
        $test_file = 'tests/test_' . $matches[1] . '.py';
        if (file_exists($test_file)) {
          $test_files[] = $test_file;
        }
      }
    }
    return array_unique($test_files);
  }

  protected function supportsRunAllTests() {
    return true;
  }
}
```

--------------------------------

### Implement Custom Linter in PHP

Source: https://context7.com/phorgeit/arcanist/llms.txt

Extends ArcanistExternalLinter to create custom linters for integrating external tools. This example shows a custom Python linter, defining its name, description, binary, and parsing logic for JSON output.

```php
<?php

final class CustomPythonLinter extends ArcanistExternalLinter {

  public function getInfoName() {
    return 'Custom Python Linter';
  }

  public function getInfoDescription() {
    return pht('Runs custom Python style checks.');
  }

  public function getLinterName() {
    return 'CUSTOMPYTHON';
  }

  public function getLinterConfigurationName() {
    return 'custom-python';
  }

  public function getDefaultBinary() {
    return 'custom-python-lint';
  }

  public function getInstallInstructions() {
    return pht('Install with: pip install custom-python-lint');
  }

  protected function getMandatoryFlags() {
    return array('--output=json');
  }

  protected function parseLinterOutput($path, $err, $stdout, $stderr) {
    $messages = array();
    $results = json_decode($stdout, true);

    foreach ($results as $result) {
      $message = new ArcanistLintMessage();
      $message->setPath($path);
      $message->setLine($result['line']);
      $message->setCode($result['code']);
      $message->setName($result['name']);
      $message->setDescription($result['message']);
      $message->setSeverity(
        ArcanistLintSeverity::SEVERITY_WARNING
      );
      $messages[] = $message;
    }

    return $messages;
  }
}
```

--------------------------------

### Authenticate and Inspect with arc

Source: https://context7.com/phorgeit/arcanist/llms.txt

Commands for managing server authentication certificates and inspecting the current working copy's relationship with Phorge revisions.

```bash
arc install-certificate
arc install-certificate https://phorge.example.com/
arc which
arc which HEAD~3
arc which --show-base
arc which --any-status
arc which --head feature-branch
```

--------------------------------

### Manage Files with arc upload and download

Source: https://context7.com/phorgeit/arcanist/llms.txt

Facilitates transferring files between the local filesystem and Phorge storage. Includes options for temporary storage, JSON output, and custom filenames.

```bash
arc upload document.pdf
arc upload image1.png image2.png image3.png
arc upload --browse screenshot.png
arc upload --temporary debug-log.txt
arc upload --json large-file.zip
arc download F123
arc download F123 --as downloaded-file.pdf
arc download 123
```

--------------------------------

### PHP ConduitClient API Calls

Source: https://context7.com/phorgeit/arcanist/llms.txt

Demonstrates how to use the ConduitClient class in PHP to make synchronous and asynchronous API calls to Phorge. It covers setting authentication, making calls, handling results, setting timeouts, and paginating through results.

```php
<?php

// Create a client connection
$client = new ConduitClient('https://phorge.example.com/');

// Set authentication token
$client->setConduitToken('api-xxxxxxxxxxxxxxxx');

// Make synchronous API call
$result = $client->callMethodSynchronous(
  'differential.revision.search',
  array(
    'constraints' => array(
      'authorPHIDs' => array('PHID-USER-xxxxx'),
      'statuses' => array('needs-review', 'accepted'),
    ),
    'limit' => 10,
  )
);

foreach ($result['data'] as $revision) {
  echo "D{$revision['id']}: {$revision['fields']['title']}\n";
}

// Make asynchronous API call
$future = $client->callMethod(
  'maniphest.search',
  array(
    'constraints' => array('assigned' => array('PHID-USER-xxxxx')),
  )
);

// Do other work...

// Resolve the future when needed
$tasks = $future->resolve();

// Set request timeout
$client->setTimeout(60.0);

// Query with pagination
$after = null;
do {
  $params = array(
    'constraints' => array('statuses' => array('open')),
    'limit' => 100,
  );
  if ($after) {
    $params['after'] = $after;
  }

  $result = $client->callMethodSynchronous('maniphest.search', $params);

  foreach ($result['data'] as $task) {
    processTask($task);
  }

  $after = idx($result['cursor'], 'after');
} while ($after);

```

--------------------------------

### Configure Arcanist Linting Rules (.arclint)

Source: https://context7.com/phorgeit/arcanist/llms.txt

The .arclint file specifies linting rules and linters for a project. It supports various linters like chmod, filename, json, merge-conflict, spelling, text, phpcs, flake8, and jshint, with options for inclusion patterns and severity levels.

```json
{
  "exclude": [
    "(^externals/)",
    "(^vendor/)"
  ],
  "linters": {
    "chmod": {
      "type": "chmod"
    },
    "filename": {
      "type": "filename"
    },
    "json": {
      "type": "json",
      "include": [
        "(\\.json$)"
      ]
    },
    "merge-conflict": {
      "type": "merge-conflict"
    },
    "spelling": {
      "type": "spelling"
    },
    "text": {
      "type": "text",
      "severity": {
        "3": "advice"
      }
    },
    "phpcs": {
      "type": "phpcs",
      "include": "(\\.php$)",
      "phpcs.standard": "PSR2"
    },
    "flake8": {
      "type": "flake8",
      "include": "(\\.py$)"
    },
    "jshint": {
      "type": "jshint",
      "include": "(\\.js$)"
    }
  }
}
```

--------------------------------

### Manage Arcanist Configuration (arc set-config, arc get-config)

Source: https://context7.com/phorgeit/arcanist/llms.txt

Commands to manage Arcanist configuration settings at user or project levels. 'arc set-config' modifies settings, while 'arc get-config' retrieves them. Options include setting editors, lint engines, default reviewers, and viewing verbose configuration details.

```bash
# Set a user-level configuration
arcc set-config -- editor vim

# Set a local (project) configuration
arcc set-config --local -- lint.engine CustomLintEngine

# Set default reviewers
arcc set-config -- arc.default-reviewers user1,user2

# Get all configuration values
arcc get-config

# Get a specific configuration value
arcc get-config -- editor

# Get verbose configuration info
arcc get-config --verbose -- lint.engine
```

--------------------------------

### PHP Class Definition and Instantiation

Source: https://github.com/phorgeit/arcanist/blob/master/src/lexer/__tests__/php/case-insensitive.txt

This snippet defines a PHP class 'C' that extends 'stdClass' and implements interface 'I'. It also shows how to instantiate the class and perform an instance check within a try-catch block.

```PHP
<?php
CLASS C EXTENDS stdClass IMPLEMENTS I {
  FUNCTION f() {
  }
}
$c = NEW C;
TRY {
  IF ($c instanceOf C) {
    ECHO __line__;
  }
} CATCH (Exception $ex) {
}

echo <<<EOT
eot;
EOT;
```

--------------------------------

### Configure Arcanist with .arcconfig

Source: https://context7.com/phorgeit/arcanist/llms.txt

Defines project-specific settings for Arcanist, including the Phorge server URI and default behaviors for landing changes.

```json
{
  "phabricator.uri": "https://phorge.example.com/",
  "load": [
    "src/"
  ],
  "history.immutable": false,
  "arc.land.onto": "main",
  "arc.land.onto-remote": "origin"
}
```

--------------------------------

### Execute API Calls with arc call-conduit

Source: https://context7.com/phorgeit/arcanist/llms.txt

Allows programmatic interaction with the Phorge Conduit API. Commands are passed as JSON strings via stdin to perform tasks like searching, downloading, or creating objects.

```bash
echo '{}' | arc call-conduit conduit.ping --
echo '{"phid":"PHID-FILE-xxxx"}' | arc call-conduit file.download --
echo '{"constraints":{"statuses":["open"]}}' | arc call-conduit maniphest.search --
echo '{"constraints":{"usernames":["admin"]}}' | arc call-conduit user.search --
echo '{"title":"Test","content":"Hello World"}' | arc call-conduit paste.create --
echo '{"constraints":{"ids":[123,456]}}' | arc call-conduit differential.revision.search --
```

--------------------------------

### Share Text with arc paste

Source: https://context7.com/phorgeit/arcanist/llms.txt

Uploads text snippets to the Phorge Paste application. Supports input from files or stdin, and allows setting metadata like titles and syntax highlighting languages.

```bash
cat script.py | arc paste --
arc paste --input script.py
arc paste --title "Debug Script" --lang python --input debug.py
arc paste --browse --input notes.txt
arc paste P123
```

--------------------------------

### Apply Patches with arc patch

Source: https://context7.com/phorgeit/arcanist/llms.txt

Applies changes from a Differential revision to the local working copy. Supports flags to skip dependencies, disable branch creation, or specify bookmarks.

```bash
arc patch D12345 --skip-dependencies
arc patch D12345 --nobranch
arc patch D12345 --bookmark review-feature
```

--------------------------------

### Export Changes with arc export

Source: https://context7.com/phorgeit/arcanist/llms.txt

Exports local changes or Differential revisions into various formats like git patches, unified diffs, or arc bundles. Useful for sharing code outside of the Phorge ecosystem.

```bash
arc export --git > changes.patch
arc export --unified > changes.diff
arc export --arcbundle changes.bundle
arc export --revision D12345 --git
arc export --diff 54321 --unified
arc export HEAD~3..HEAD --git
arc export --encoding ISO-8859-1 --unified
```

--------------------------------

### Parse HTML Tag to JSON

Source: https://github.com/phorgeit/arcanist/blob/master/src/parser/html/__tests__/data/attributes-basic.txt

Converts a string representation of an HTML tag into a structured JSON object. It handles boolean attributes and key-value pairs effectively.

```json
[
  {
    "tag": "a",
    "attributes": {
      "b": "1",
      "c": true,
      "d": "e"
    },
    "children": []
  }
]
```

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