Support for the PHPUnit dialect of JUnit

Refactor PHPUnit support into separate phpunit-junit parser

Instead of modifying the Java JUnit parser, this creates a dedicated
PHPUnit parser that properly handles PHPUnit's nested testsuite elements.
This keeps the parsers cleanly separated and allows for future PHPUnit-
specific features.

Co-Authored-By: Matteo Beccati <matteo@beccati.com>
Co-Authored-By: Claude Code <noreply@anthropic.com>

README.md

@@ -20,6 +20,7 @@ This [Github Action](https://github.com/features/actions) displays test results
 - Java / [JUnit](https://junit.org/)
 - JavaScript / [JEST](https://jestjs.io/) / [Mocha](https://mochajs.org/)
 - Python / [pytest](https://docs.pytest.org/en/stable/) / [unittest](https://docs.python.org/3/library/unittest.html)
+- PHP / [PHPUnit](https://phpunit.de/)
 - Ruby / [RSpec](https://rspec.info/)
 - Swift / xUnit
 
@@ -147,6 +148,7 @@ jobs:
     #   java-junit
     #   jest-junit
     #   mocha-json
+    #   phpunit-junit
     #   python-xunit
     #   rspec-json
     #   swift-xunit
@@ -314,6 +316,14 @@ This is due to the fact Java stack traces don't contain a full path to the sourc
 Some heuristic was necessary to figure out the mapping between the line in the stack trace and an actual source file.
 </details>
 
+<details>
+  <summary>phpunit-junit</summary>
+
+[PHPUnit](https://phpunit.de/) can generate JUnit XML via CLI:
+`phpunit --log-junit reports/phpunit-junit.xml`
+
+</details>
+
 <details>
   <summary>jest-junit</summary>
 

__tests__/__outputs__/phpunit-test-results.md

@@ -0,0 +1,38 @@
+![Tests failed](https://img.shields.io/badge/tests-10%20passed%2C%202%20failed-critical)
+## ❌ <a id="user-content-r0" href="#r0">fixtures/phpunit/phpunit.xml</a>
+**12** tests were completed in **148ms** with **10** passed, **2** failed and **0** skipped.
+|Test suite|Passed|Failed|Skipped|Time|
+|:---|---:|---:|---:|---:|
+|[CLI Arguments](#r0s0)||2❌||140ms|
+|[PHPUnit\Event\CollectingDispatcherTest](#r0s1)|2✅|||4ms|
+|[PHPUnit\Event\DeferringDispatcherTest](#r0s2)|4✅|||3ms|
+|[PHPUnit\Event\DirectDispatcherTest](#r0s3)|4✅|||1ms|
+### ❌ <a id="user-content-r0s0" href="#r0s0">CLI Arguments</a>
+```
+❌ targeting-traits-with-coversclass-attribute-is-deprecated.phpt
+	PHPUnit\Framework\PhptAssertionFailedError
+❌ targeting-traits-with-usesclass-attribute-is-deprecated.phpt
+	PHPUnit\Framework\PhptAssertionFailedError
+```
+### ✅ <a id="user-content-r0s1" href="#r0s1">PHPUnit\Event\CollectingDispatcherTest</a>
+```
+PHPUnit.Event.CollectingDispatcherTest
+  ✅ testHasNoCollectedEventsWhenFlushedImmediatelyAfterCreation
+  ✅ testCollectsDispatchedEventsUntilFlushed
+```
+### ✅ <a id="user-content-r0s2" href="#r0s2">PHPUnit\Event\DeferringDispatcherTest</a>
+```
+PHPUnit.Event.DeferringDispatcherTest
+  ✅ testCollectsEventsUntilFlush
+  ✅ testFlushesCollectedEvents
+  ✅ testSubscriberCanBeRegistered
+  ✅ testTracerCanBeRegistered
+```
+### ✅ <a id="user-content-r0s3" href="#r0s3">PHPUnit\Event\DirectDispatcherTest</a>
+```
+PHPUnit.Event.DirectDispatcherTest
+  ✅ testDispatchesEventToKnownSubscribers
+  ✅ testDispatchesEventToTracers
+  ✅ testRegisterRejectsUnknownSubscriber
+  ✅ testDispatchRejectsUnknownEventType
+```

__tests__/__snapshots__/phpunit-junit.test.ts.snap

@@ -0,0 +1,188 @@
+// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
+
+exports[`phpunit-junit tests report from phpunit test results matches snapshot 1`] = `
+TestRunResult {
+  "path": "fixtures/phpunit/phpunit.xml",
+  "suites": [
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": "PHPUnit.Event.CollectingDispatcherTest",
+          "tests": [
+            TestCaseResult {
+              "error": undefined,
+              "name": "testHasNoCollectedEventsWhenFlushedImmediatelyAfterCreation",
+              "result": "success",
+              "time": 1.441,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testCollectsDispatchedEventsUntilFlushed",
+              "result": "success",
+              "time": 2.815,
+            },
+          ],
+        },
+      ],
+      "name": "PHPUnit\\Event\\CollectingDispatcherTest",
+      "totalTime": 4.256,
+    },
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": "PHPUnit.Event.DeferringDispatcherTest",
+          "tests": [
+            TestCaseResult {
+              "error": undefined,
+              "name": "testCollectsEventsUntilFlush",
+              "result": "success",
+              "time": 1.6720000000000002,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testFlushesCollectedEvents",
+              "result": "success",
+              "time": 0.661,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testSubscriberCanBeRegistered",
+              "result": "success",
+              "time": 0.33399999999999996,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testTracerCanBeRegistered",
+              "result": "success",
+              "time": 0.262,
+            },
+          ],
+        },
+      ],
+      "name": "PHPUnit\\Event\\DeferringDispatcherTest",
+      "totalTime": 2.928,
+    },
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": "PHPUnit.Event.DirectDispatcherTest",
+          "tests": [
+            TestCaseResult {
+              "error": undefined,
+              "name": "testDispatchesEventToKnownSubscribers",
+              "result": "success",
+              "time": 0.17,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testDispatchesEventToTracers",
+              "result": "success",
+              "time": 0.248,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testRegisterRejectsUnknownSubscriber",
+              "result": "success",
+              "time": 0.257,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "testDispatchRejectsUnknownEventType",
+              "result": "success",
+              "time": 0.11900000000000001,
+            },
+          ],
+        },
+      ],
+      "name": "PHPUnit\\Event\\DirectDispatcherTest",
+      "totalTime": 0.794,
+    },
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": "",
+          "tests": [
+            TestCaseResult {
+              "error": {
+                "details": "targeting-traits-with-coversclass-attribute-is-deprecated.phptFailed asserting that string matches format description.
+--- Expected
++++ Actual
+@@ @@
+ PHPUnit Started (PHPUnit 11.2-g0c2333363 using PHP 8.2.17 (cli) on Linux)
+ Test Runner Configured
+ Test Suite Loaded (1 test)
++Test Runner Triggered Warning (No code coverage driver available)
+ Event Facade Sealed
+ Test Runner Started
+ Test Suite Sorted
+@@ @@
+ Test Preparation Started (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithCoversClassTest::testSomething)
+ Test Prepared (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithCoversClassTest::testSomething)
+ Test Passed (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithCoversClassTest::testSomething)
+-Test Runner Triggered Deprecation (Targeting a trait such as PHPUnit\\TestFixture\\CoveredTrait with #[CoversClass] is deprecated, please refactor your test to use #[CoversTrait] instead.)
+ Test Finished (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithCoversClassTest::testSomething)
+ Test Suite Finished (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithCoversClassTest, 1 test)
+ Test Runner Execution Finished
+ Test Runner Finished
+-PHPUnit Finished (Shell Exit Code: 0)
++PHPUnit Finished (Shell Exit Code: 1)
+
+/home/matteo/OSS/phpunit/tests/end-to-end/metadata/targeting-traits-with-coversclass-attribute-is-deprecated.phpt:28
+/home/matteo/OSS/phpunit/src/Framework/TestSuite.php:369
+/home/matteo/OSS/phpunit/src/TextUI/TestRunner.php:62
+/home/matteo/OSS/phpunit/src/TextUI/Application.php:200",
+                "line": undefined,
+                "message": "PHPUnit\\Framework\\PhptAssertionFailedError",
+                "path": undefined,
+              },
+              "name": "targeting-traits-with-coversclass-attribute-is-deprecated.phpt",
+              "result": "failed",
+              "time": 68.151,
+            },
+            TestCaseResult {
+              "error": {
+                "details": "targeting-traits-with-usesclass-attribute-is-deprecated.phptFailed asserting that string matches format description.
+--- Expected
++++ Actual
+@@ @@
+ PHPUnit Started (PHPUnit 11.2-g0c2333363 using PHP 8.2.17 (cli) on Linux)
+ Test Runner Configured
+ Test Suite Loaded (1 test)
++Test Runner Triggered Warning (No code coverage driver available)
+ Event Facade Sealed
+ Test Runner Started
+ Test Suite Sorted
+@@ @@
+ Test Preparation Started (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithUsesClassTest::testSomething)
+ Test Prepared (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithUsesClassTest::testSomething)
+ Test Passed (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithUsesClassTest::testSomething)
+-Test Runner Triggered Deprecation (Targeting a trait such as PHPUnit\\TestFixture\\CoveredTrait with #[UsesClass] is deprecated, please refactor your test to use #[UsesTrait] instead.)
+ Test Finished (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithUsesClassTest::testSomething)
+ Test Suite Finished (PHPUnit\\DeprecatedAnnotationsTestFixture\\TraitTargetedWithUsesClassTest, 1 test)
+ Test Runner Execution Finished
+ Test Runner Finished
+-PHPUnit Finished (Shell Exit Code: 0)
++PHPUnit Finished (Shell Exit Code: 1)
+
+/home/matteo/OSS/phpunit/tests/end-to-end/metadata/targeting-traits-with-usesclass-attribute-is-deprecated.phpt:28
+/home/matteo/OSS/phpunit/src/Framework/TestSuite.php:369
+/home/matteo/OSS/phpunit/src/TextUI/TestRunner.php:62
+/home/matteo/OSS/phpunit/src/TextUI/Application.php:200",
+                "line": undefined,
+                "message": "PHPUnit\\Framework\\PhptAssertionFailedError",
+                "path": undefined,
+              },
+              "name": "targeting-traits-with-usesclass-attribute-is-deprecated.phpt",
+              "result": "failed",
+              "time": 64.268,
+            },
+          ],
+        },
+      ],
+      "name": "CLI Arguments",
+      "totalTime": 140.397,
+    },
+  ],
+  "totalTime": undefined,
+}
+`;

__tests__/fixtures/empty/phpunit-empty.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites/>

__tests__/fixtures/phpunit/phpunit.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
+  <testsuite name="CLI Arguments" tests="12" assertions="12" errors="0" failures="2" skipped="0" time="0.140397">
+    <testcase name="targeting-traits-with-coversclass-attribute-is-deprecated.phpt" file="/home/matteo/OSS/phpunit/tests/end-to-end/metadata/targeting-traits-with-coversclass-attribute-is-deprecated.phpt" assertions="1" time="0.068151">
+      <failure type="PHPUnit\Framework\PhptAssertionFailedError">targeting-traits-with-coversclass-attribute-is-deprecated.phptFailed asserting that string matches format description.
+--- Expected
++++ Actual
+@@ @@
+ PHPUnit Started (PHPUnit 11.2-g0c2333363 using PHP 8.2.17 (cli) on Linux)
+ Test Runner Configured
+ Test Suite Loaded (1 test)
++Test Runner Triggered Warning (No code coverage driver available)
+ Event Facade Sealed
+ Test Runner Started
+ Test Suite Sorted
+@@ @@
+ Test Preparation Started (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithCoversClassTest::testSomething)
+ Test Prepared (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithCoversClassTest::testSomething)
+ Test Passed (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithCoversClassTest::testSomething)
+-Test Runner Triggered Deprecation (Targeting a trait such as PHPUnit\TestFixture\CoveredTrait with #[CoversClass] is deprecated, please refactor your test to use #[CoversTrait] instead.)
+ Test Finished (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithCoversClassTest::testSomething)
+ Test Suite Finished (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithCoversClassTest, 1 test)
+ Test Runner Execution Finished
+ Test Runner Finished
+-PHPUnit Finished (Shell Exit Code: 0)
++PHPUnit Finished (Shell Exit Code: 1)
+
+/home/matteo/OSS/phpunit/tests/end-to-end/metadata/targeting-traits-with-coversclass-attribute-is-deprecated.phpt:28
+/home/matteo/OSS/phpunit/src/Framework/TestSuite.php:369
+/home/matteo/OSS/phpunit/src/TextUI/TestRunner.php:62
+/home/matteo/OSS/phpunit/src/TextUI/Application.php:200</failure>
+    </testcase>
+    <testcase name="targeting-traits-with-usesclass-attribute-is-deprecated.phpt" file="/home/matteo/OSS/phpunit/tests/end-to-end/metadata/targeting-traits-with-usesclass-attribute-is-deprecated.phpt" assertions="1" time="0.064268">
+      <failure type="PHPUnit\Framework\PhptAssertionFailedError">targeting-traits-with-usesclass-attribute-is-deprecated.phptFailed asserting that string matches format description.
+--- Expected
++++ Actual
+@@ @@
+ PHPUnit Started (PHPUnit 11.2-g0c2333363 using PHP 8.2.17 (cli) on Linux)
+ Test Runner Configured
+ Test Suite Loaded (1 test)
++Test Runner Triggered Warning (No code coverage driver available)
+ Event Facade Sealed
+ Test Runner Started
+ Test Suite Sorted
+@@ @@
+ Test Preparation Started (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithUsesClassTest::testSomething)
+ Test Prepared (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithUsesClassTest::testSomething)
+ Test Passed (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithUsesClassTest::testSomething)
+-Test Runner Triggered Deprecation (Targeting a trait such as PHPUnit\TestFixture\CoveredTrait with #[UsesClass] is deprecated, please refactor your test to use #[UsesTrait] instead.)
+ Test Finished (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithUsesClassTest::testSomething)
+ Test Suite Finished (PHPUnit\DeprecatedAnnotationsTestFixture\TraitTargetedWithUsesClassTest, 1 test)
+ Test Runner Execution Finished
+ Test Runner Finished
+-PHPUnit Finished (Shell Exit Code: 0)
++PHPUnit Finished (Shell Exit Code: 1)
+
+/home/matteo/OSS/phpunit/tests/end-to-end/metadata/targeting-traits-with-usesclass-attribute-is-deprecated.phpt:28
+/home/matteo/OSS/phpunit/src/Framework/TestSuite.php:369
+/home/matteo/OSS/phpunit/src/TextUI/TestRunner.php:62
+/home/matteo/OSS/phpunit/src/TextUI/Application.php:200</failure>
+    </testcase>
+    <testsuite name="PHPUnit\Event\CollectingDispatcherTest" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/CollectingDispatcherTest.php" tests="2" assertions="2" errors="0" failures="0" skipped="0" time="0.004256">
+      <testcase name="testHasNoCollectedEventsWhenFlushedImmediatelyAfterCreation" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/CollectingDispatcherTest.php" line="20" class="PHPUnit\Event\CollectingDispatcherTest" classname="PHPUnit.Event.CollectingDispatcherTest" assertions="1" time="0.001441"/>
+      <testcase name="testCollectsDispatchedEventsUntilFlushed" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/CollectingDispatcherTest.php" line="27" class="PHPUnit\Event\CollectingDispatcherTest" classname="PHPUnit.Event.CollectingDispatcherTest" assertions="1" time="0.002815"/>
+    </testsuite>
+    <testsuite name="PHPUnit\Event\DeferringDispatcherTest" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DeferringDispatcherTest.php" tests="4" assertions="4" errors="0" failures="0" skipped="0" time="0.002928">
+      <testcase name="testCollectsEventsUntilFlush" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DeferringDispatcherTest.php" line="22" class="PHPUnit\Event\DeferringDispatcherTest" classname="PHPUnit.Event.DeferringDispatcherTest" assertions="1" time="0.001672"/>
+      <testcase name="testFlushesCollectedEvents" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DeferringDispatcherTest.php" line="35" class="PHPUnit\Event\DeferringDispatcherTest" classname="PHPUnit.Event.DeferringDispatcherTest" assertions="1" time="0.000661"/>
+      <testcase name="testSubscriberCanBeRegistered" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DeferringDispatcherTest.php" line="53" class="PHPUnit\Event\DeferringDispatcherTest" classname="PHPUnit.Event.DeferringDispatcherTest" assertions="1" time="0.000334"/>
+      <testcase name="testTracerCanBeRegistered" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DeferringDispatcherTest.php" line="69" class="PHPUnit\Event\DeferringDispatcherTest" classname="PHPUnit.Event.DeferringDispatcherTest" assertions="1" time="0.000262"/>
+    </testsuite>
+    <testsuite name="PHPUnit\Event\DirectDispatcherTest" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DirectDispatcherTest.php" tests="4" assertions="4" errors="0" failures="0" skipped="0" time="0.000794">
+      <testcase name="testDispatchesEventToKnownSubscribers" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DirectDispatcherTest.php" line="24" class="PHPUnit\Event\DirectDispatcherTest" classname="PHPUnit.Event.DirectDispatcherTest" assertions="1" time="0.000170"/>
+      <testcase name="testDispatchesEventToTracers" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DirectDispatcherTest.php" line="43" class="PHPUnit\Event\DirectDispatcherTest" classname="PHPUnit.Event.DirectDispatcherTest" assertions="1" time="0.000248"/>
+      <testcase name="testRegisterRejectsUnknownSubscriber" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DirectDispatcherTest.php" line="62" class="PHPUnit\Event\DirectDispatcherTest" classname="PHPUnit.Event.DirectDispatcherTest" assertions="1" time="0.000257"/>
+      <testcase name="testDispatchRejectsUnknownEventType" file="/home/matteo/OSS/phpunit/tests/unit/Event/Dispatcher/DirectDispatcherTest.php" line="73" class="PHPUnit\Event\DirectDispatcherTest" classname="PHPUnit.Event.DirectDispatcherTest" assertions="1" time="0.000119"/>
+    </testsuite>
+  </testsuite>
+</testsuites>

__tests__/phpunit-junit.test.ts

@@ -0,0 +1,102 @@
+import * as fs from 'fs'
+import * as path from 'path'
+
+import {PhpunitJunitParser} from '../src/parsers/phpunit-junit/phpunit-junit-parser'
+import {ParseOptions} from '../src/test-parser'
+import {getReport} from '../src/report/get-report'
+import {normalizeFilePath} from '../src/utils/path-utils'
+
+describe('phpunit-junit tests', () => {
+  it('produces empty test run result when there are no test cases', async () => {
+    const fixturePath = path.join(__dirname, 'fixtures', 'empty', 'phpunit-empty.xml')
+    const filePath = normalizeFilePath(path.relative(__dirname, fixturePath))
+    const fileContent = fs.readFileSync(fixturePath, {encoding: 'utf8'})
+
+    const opts: ParseOptions = {
+      parseErrors: true,
+      trackedFiles: []
+    }
+
+    const parser = new PhpunitJunitParser(opts)
+    const result = await parser.parse(filePath, fileContent)
+    expect(result.tests).toBe(0)
+    expect(result.result).toBe('success')
+  })
+
+  it('report from phpunit test results matches snapshot', async () => {
+    const fixturePath = path.join(__dirname, 'fixtures', 'phpunit', 'phpunit.xml')
+    const outputPath = path.join(__dirname, '__outputs__', 'phpunit-test-results.md')
+    const filePath = normalizeFilePath(path.relative(__dirname, fixturePath))
+    const fileContent = fs.readFileSync(fixturePath, {encoding: 'utf8'})
+
+    const opts: ParseOptions = {
+      parseErrors: true,
+      trackedFiles: []
+    }
+
+    const parser = new PhpunitJunitParser(opts)
+    const result = await parser.parse(filePath, fileContent)
+    expect(result).toMatchSnapshot()
+
+    const report = getReport([result])
+    fs.mkdirSync(path.dirname(outputPath), {recursive: true})
+    fs.writeFileSync(outputPath, report)
+  })
+
+  it('parses nested test suites correctly', async () => {
+    const fixturePath = path.join(__dirname, 'fixtures', 'phpunit', 'phpunit.xml')
+    const filePath = normalizeFilePath(path.relative(__dirname, fixturePath))
+    const fileContent = fs.readFileSync(fixturePath, {encoding: 'utf8'})
+
+    const opts: ParseOptions = {
+      parseErrors: true,
+      trackedFiles: []
+    }
+
+    const parser = new PhpunitJunitParser(opts)
+    const result = await parser.parse(filePath, fileContent)
+
+    // Should have 4 test suites (3 nested ones plus the parent with direct testcases)
+    expect(result.suites.length).toBe(4)
+
+    // Verify suite names
+    const suiteNames = result.suites.map(s => s.name)
+    expect(suiteNames).toContain('PHPUnit\\Event\\CollectingDispatcherTest')
+    expect(suiteNames).toContain('PHPUnit\\Event\\DeferringDispatcherTest')
+    expect(suiteNames).toContain('PHPUnit\\Event\\DirectDispatcherTest')
+    expect(suiteNames).toContain('CLI Arguments')
+
+    // Verify total test count
+    expect(result.tests).toBe(12)
+    expect(result.passed).toBe(10)
+    expect(result.failed).toBe(2)
+  })
+
+  it('extracts error details from failures', async () => {
+    const fixturePath = path.join(__dirname, 'fixtures', 'phpunit', 'phpunit.xml')
+    const filePath = normalizeFilePath(path.relative(__dirname, fixturePath))
+    const fileContent = fs.readFileSync(fixturePath, {encoding: 'utf8'})
+
+    const opts: ParseOptions = {
+      parseErrors: true,
+      trackedFiles: []
+    }
+
+    const parser = new PhpunitJunitParser(opts)
+    const result = await parser.parse(filePath, fileContent)
+
+    // Find the CLI Arguments suite which has failures
+    const cliSuite = result.suites.find(s => s.name === 'CLI Arguments')
+    expect(cliSuite).toBeDefined()
+
+    // Get the failed tests
+    const failedTests = cliSuite!.groups.flatMap(g => g.tests).filter(t => t.result === 'failed')
+    expect(failedTests.length).toBe(2)
+
+    // Verify error details are captured
+    for (const test of failedTests) {
+      expect(test.error).toBeDefined()
+      expect(test.error!.details).toContain('Failed asserting that string matches format description')
+    }
+  })
+})

action.yml

@@ -32,6 +32,7 @@ inputs:
         - java-junit
         - jest-junit
         - mocha-json
+        - phpunit-junit
         - python-xunit
         - rspec-json
         - swift-xunit

src/main.ts

@@ -17,6 +17,7 @@ import {GolangJsonParser} from './parsers/golang-json/golang-json-parser'
 import {JavaJunitParser} from './parsers/java-junit/java-junit-parser'
 import {JestJunitParser} from './parsers/jest-junit/jest-junit-parser'
 import {MochaJsonParser} from './parsers/mocha-json/mocha-json-parser'
+import {PhpunitJunitParser} from './parsers/phpunit-junit/phpunit-junit-parser'
 import {PythonXunitParser} from './parsers/python-xunit/python-xunit-parser'
 import {RspecJsonParser} from './parsers/rspec-json/rspec-json-parser'
 import {SwiftXunitParser} from './parsers/swift-xunit/swift-xunit-parser'
@@ -271,6 +272,8 @@ class TestReporter {
         return new JestJunitParser(options)
       case 'mocha-json':
         return new MochaJsonParser(options)
+      case 'phpunit-junit':
+        return new PhpunitJunitParser(options)
       case 'python-xunit':
         return new PythonXunitParser(options)
       case 'rspec-json':

src/parsers/phpunit-junit/phpunit-junit-parser.ts

@@ -0,0 +1,190 @@
+import {ParseOptions, TestParser} from '../../test-parser'
+import {parseStringPromise} from 'xml2js'
+
+import {PhpunitReport, SingleSuiteReport, TestCase, TestSuite} from './phpunit-junit-types'
+import {normalizeFilePath} from '../../utils/path-utils'
+
+import {
+  TestExecutionResult,
+  TestRunResult,
+  TestSuiteResult,
+  TestGroupResult,
+  TestCaseResult,
+  TestCaseError
+} from '../../test-results'
+
+export class PhpunitJunitParser implements TestParser {
+  readonly trackedFiles: Set<string>
+
+  constructor(readonly options: ParseOptions) {
+    this.trackedFiles = new Set(options.trackedFiles.map(f => normalizeFilePath(f)))
+  }
+
+  async parse(filePath: string, content: string): Promise<TestRunResult> {
+    const reportOrSuite = await this.getPhpunitReport(filePath, content)
+    const isReport = (reportOrSuite as PhpunitReport).testsuites !== undefined
+
+    // XML might contain:
+    // - multiple suites under <testsuites> root node
+    // - single <testsuite> as root node
+    let report: PhpunitReport
+    if (isReport) {
+      report = reportOrSuite as PhpunitReport
+    } else {
+      // Make it behave the same way as if suite was inside <testsuites> root node
+      const suite = (reportOrSuite as SingleSuiteReport).testsuite
+      report = {
+        testsuites: {
+          $: {time: suite.$.time},
+          testsuite: [suite]
+        }
+      }
+    }
+
+    return this.getTestRunResult(filePath, report)
+  }
+
+  private async getPhpunitReport(filePath: string, content: string): Promise<PhpunitReport | SingleSuiteReport> {
+    try {
+      return await parseStringPromise(content)
+    } catch (e) {
+      throw new Error(`Invalid XML at ${filePath}\n\n${e}`)
+    }
+  }
+
+  private getTestRunResult(filePath: string, report: PhpunitReport): TestRunResult {
+    const suites: TestSuiteResult[] = []
+    this.collectSuites(suites, report.testsuites.testsuite ?? [])
+
+    const seconds = parseFloat(report.testsuites.$?.time ?? '')
+    const time = isNaN(seconds) ? undefined : seconds * 1000
+    return new TestRunResult(filePath, suites, time)
+  }
+
+  private collectSuites(results: TestSuiteResult[], testsuites: TestSuite[]): void {
+    for (const ts of testsuites) {
+      // Recursively process nested test suites first (depth-first)
+      if (ts.testsuite) {
+        this.collectSuites(results, ts.testsuite)
+      }
+
+      // Only add suites that have direct test cases
+      // This avoids adding container suites that only hold nested suites
+      if (ts.testcase && ts.testcase.length > 0) {
+        const name = ts.$.name.trim()
+        const time = parseFloat(ts.$.time) * 1000
+        results.push(new TestSuiteResult(name, this.getGroups(ts), time))
+      }
+    }
+  }
+
+  private getGroups(suite: TestSuite): TestGroupResult[] {
+    if (!suite.testcase || suite.testcase.length === 0) {
+      return []
+    }
+
+    const groups: {name: string; tests: TestCase[]}[] = []
+    for (const tc of suite.testcase) {
+      // Use classname (PHPUnit style) for grouping
+      // If classname matches suite name, use empty string to avoid redundancy
+      const className = tc.$.classname ?? tc.$.class ?? ''
+      const groupName = className === suite.$.name ? '' : className
+      let grp = groups.find(g => g.name === groupName)
+      if (grp === undefined) {
+        grp = {name: groupName, tests: []}
+        groups.push(grp)
+      }
+      grp.tests.push(tc)
+    }
+
+    return groups.map(grp => {
+      const tests = grp.tests.map(tc => {
+        const name = tc.$.name.trim()
+        const result = this.getTestCaseResult(tc)
+        const time = parseFloat(tc.$.time) * 1000
+        const error = this.getTestCaseError(tc)
+        return new TestCaseResult(name, result, time, error)
+      })
+      return new TestGroupResult(grp.name, tests)
+    })
+  }
+
+  private getTestCaseResult(test: TestCase): TestExecutionResult {
+    if (test.failure || test.error) return 'failed'
+    if (test.skipped) return 'skipped'
+    return 'success'
+  }
+
+  private getTestCaseError(tc: TestCase): TestCaseError | undefined {
+    if (!this.options.parseErrors) {
+      return undefined
+    }
+
+    // We process <error> and <failure> the same way
+    const failures = tc.failure ?? tc.error
+    if (!failures || failures.length === 0) {
+      return undefined
+    }
+
+    const failure = failures[0]
+    const details = failure._ ?? ''
+
+    // PHPUnit provides file path directly in testcase attributes
+    let filePath: string | undefined
+    let line: number | undefined
+
+    if (tc.$.file) {
+      const normalizedPath = normalizeFilePath(tc.$.file)
+      if (this.trackedFiles.has(normalizedPath)) {
+        filePath = normalizedPath
+      }
+      if (tc.$.line) {
+        line = parseInt(tc.$.line)
+      }
+    }
+
+    // If file not in tracked files, try to extract from error details
+    if (!filePath && details) {
+      const extracted = this.extractFileAndLine(details)
+      if (extracted) {
+        filePath = extracted.filePath
+        line = extracted.line
+      }
+    }
+
+    let message: string | undefined
+    if (failure.$) {
+      message = failure.$.message
+      if (failure.$.type) {
+        message = message ? `${failure.$.type}: ${message}` : failure.$.type
+      }
+    }
+
+    return {
+      path: filePath,
+      line,
+      details,
+      message
+    }
+  }
+
+  private extractFileAndLine(details: string): {filePath: string; line: number} | undefined {
+    // PHPUnit stack traces typically have format: /path/to/file.php:123
+    const lines = details.split(/\r?\n/)
+
+    for (const str of lines) {
+      // Match patterns like /path/to/file.php:123 or at /path/to/file.php(123)
+      const match = str.match(/([^\s:()]+\.php):(\d+)|([^\s:()]+\.php)\((\d+)\)/)
+      if (match) {
+        const path = match[1] ?? match[3]
+        const lineStr = match[2] ?? match[4]
+        const normalizedPath = normalizeFilePath(path)
+        if (this.trackedFiles.has(normalizedPath)) {
+          return {filePath: normalizedPath, line: parseInt(lineStr)}
+        }
+      }
+    }
+
+    return undefined
+  }
+}

src/parsers/phpunit-junit/phpunit-junit-types.ts

@@ -0,0 +1,52 @@
+export interface PhpunitReport {
+  testsuites: TestSuites
+}
+
+export interface SingleSuiteReport {
+  testsuite: TestSuite
+}
+
+export interface TestSuites {
+  $?: {
+    time?: string
+  }
+  testsuite?: TestSuite[]
+}
+
+export interface TestSuite {
+  $: {
+    name: string
+    tests?: string
+    assertions?: string
+    errors?: string
+    failures?: string
+    skipped?: string
+    time: string
+    file?: string
+  }
+  testcase?: TestCase[]
+  testsuite?: TestSuite[]
+}
+
+export interface TestCase {
+  $: {
+    name: string
+    class?: string
+    classname?: string
+    file?: string
+    line?: string
+    assertions?: string
+    time: string
+  }
+  failure?: Failure[]
+  error?: Failure[]
+  skipped?: string[]
+}
+
+export interface Failure {
+  _: string
+  $?: {
+    type?: string
+    message?: string
+  }
+}