Repository Analysis

thephpleague/commonmark

Highly-extensible PHP Markdown parser which fully supports the CommonMark and GFM specs.

5.6 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of thephpleague/commonmark, a PHP project with 2,965 GitHub stars. SynthScan v2.0 examined 59,735 lines of code across 869 source files, recording 323 pattern matches distributed across 5 syntactic categories. The overall adjusted score of 5.6 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

5.6
Adjusted Score
5.6
Raw Score
100%
Time Factor
2026-07-14
Last Push
3.0K
Stars
PHP
Language
59.7K
Lines of Code
869
Files
323
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 0LOW 323

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 323 distinct pattern matches across 5 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Hyper-Verbose Identifiers281 hits · 281 pts
SeverityFileLineSnippetContext
LOWtests/unit/GithubFlavoredMarkdownConverterTest.php40 public function testConfigOnlyConstructor(): voidCODE
LOWtests/unit/GithubFlavoredMarkdownConverterTest.php58 public function testGetEnvironmentReturnsMainEnvironmentClass(): voidCODE
LOWtests/unit/MarkdownConverterTest.php27 public function testConstructorAndGetEnvironment(): voidCODE
LOWtests/unit/MarkdownConverterTest.php36 public function testInvokeReturnsSameOutputAsConvert(): voidCODE
LOWtests/unit/CommonMarkConverterTest.php38 public function testConstructorWithConfig(): voidCODE
LOWtests/unit/CommonMarkConverterTest.php58 public function testInvokeReturnsSameOutputAsConvert(): voidCODE
LOWtests/unit/CommonMarkConverterTest.php67 public function testGetEnvironmentReturnsMainEnvironmentClass(): voidCODE
LOWtests/unit/Renderer/HtmlRendererTest.php19 public function testRenderDocumentCallsDocumentRenderer(): voidCODE
LOWtests/unit/Renderer/HtmlRendererTest.php33 public function testRenderNodesWithBlocks(): voidCODE
LOWtests/unit/Renderer/HtmlRendererTest.php51 public function testRenderNodesWithInlines(): voidCODE
LOWtests/unit/Renderer/HtmlRendererTest.php69 public function testRenderNodesFallsBackWhenFirstRendererReturnsNull(): voidCODE
LOWtests/unit/Renderer/HtmlRendererTest.php87 public function testRenderNodesWithMissingRenderer(): voidCODE
LOWtests/unit/Renderer/Inline/TextRendererTest.php46 public function testRenderWithInvalidType(): voidCODE
LOWtests/unit/Renderer/Inline/NewlineRendererTest.php61 public function testRenderWithInvalidType(): voidCODE
LOWtests/unit/Renderer/Block/ParagraphRendererTest.php51 public function testRenderWithInvalidType(): voidCODE
LOWtests/unit/Renderer/Block/DocumentRendererTest.php59 public function testRenderWithInvalidType(): voidCODE
LOWtests/unit/Extension/Embed/EmbedProcessorTest.php43 public function testNoUpdatesEmbedsWithoutEmbeds(): voidCODE
LOWtests/unit/Extension/Embed/EmbedTest.php21 public function testConstructorGettersAndSetters(): voidCODE
LOW…nsion/SmartPunct/ReplaceUnpairedQuotesListenerTest.php35 public function testWithConsecutiveMerging(array $paragraphNodes, string $expectedText): voidCODE
LOW…nsion/SmartPunct/ReplaceUnpairedQuotesListenerTest.php87 public function testWhenMergingNotPossible(): voidCODE
LOWtests/unit/Extension/Highlight/MarkRendererTest.php48 public function testRenderWithInvalidNodeType(): voidCODE
LOW…scriptionList/Renderer/DescriptionListRendererTest.php48 public function testRenderWithInvalidType(): voidCODE
LOW…scriptionList/Renderer/DescriptionTermRendererTest.php46 public function testRenderWithInvalidType(): voidCODE
LOW…n/DescriptionList/Renderer/DescriptionRendererTest.php46 public function testRenderWithInvalidType(): voidCODE
LOW…nit/Extension/DescriptionList/Node/DescriptionTest.php21 public function testTightnessConstructorGetterAndSetter(): voidCODE
LOW…s/unit/Extension/FrontMatter/FrontMatterParserTest.php41 public function testWithFrontMatterThatsJustAString(): voidCODE
LOW…s/unit/Extension/FrontMatter/FrontMatterParserTest.php77 public function testWithInvalidFrontMatterDelimiters(): voidCODE
LOW…FrontMatter/Input/MarkdownInputWithFrontMatterTest.php21 public function testConstructorAndGetters(): voidCODE
LOW…ntMatter/Output/RenderedContentWithFrontMatterTest.php22 public function testConstructorAndGetters(): voidCODE
LOW…/FrontMatter/Data/SymfonyYamlFrontMatterParserTest.php63 public static function provideInvalidYamlExamples(): iterableCODE
LOW…/FrontMatter/Data/SymfonyYamlFrontMatterParserTest.php72 private static function yamlLibrarySupportsObjectUnserialization(): boolCODE
LOW…ion/HeadingPermalink/HeadingPermalinkProcessorTest.php31 public function testUsesDefaultSlugNormalizer(): voidCODE
LOW…ion/HeadingPermalink/HeadingPermalinkProcessorTest.php49 public function testCustomSlugNormalizerOption(): voidCODE
LOW…ion/HeadingPermalink/HeadingPermalinkProcessorTest.php82 public function testInvalidSlugNormalizerOption(): voidCODE
LOW…ion/HeadingPermalink/HeadingPermalinkProcessorTest.php96 public function testDuplicateSlugsAreMadeUnique(): voidCODE
LOW…nit/Extension/Attributes/Util/AttributesHelperTest.php43 public static function dataForTestParseAttributes(): iterableCODE
LOW…nit/Extension/Attributes/Util/AttributesHelperTest.php134 public static function dataForTestMergeAttributes(): iterableCODE
LOW…nit/Extension/Attributes/Util/AttributesHelperTest.php217 public static function dataForTestFilterAttributes(): iterableCODE
LOW…/Extension/TaskList/TaskListItemMarkerRendererTest.php56 public function testWithInvalidInlineElement(): voidCODE
LOWtests/unit/Extension/Table/TableCellTest.php26 public function testTypeConstructorArgument(): voidCODE
LOWtests/unit/Extension/Table/TableCellTest.php45 public function testAlignConstructorArgument(): voidCODE
LOWtests/unit/Extension/Table/TableCellRendererTest.php25 public function testRenderWithTableHeader(): voidCODE
LOWtests/unit/Extension/Table/TableCellRendererTest.php51 public function testRenderWithTableCellHavingAlignment(): voidCODE
LOWtests/unit/Extension/Table/TableCellRendererTest.php64 public function testRenderWithTableCellWithCustomAttributes(): voidCODE
LOWtests/unit/Extension/Table/TableSectionRendererTest.php26 public function testRenderWithTableSection(): voidCODE
LOWtests/unit/Extension/Table/TableSectionRendererTest.php40 public function testRenderWithEmptyTableSection(): voidCODE
LOWtests/unit/Extension/Mention/MentionTest.php22 public function testConstructorAndGetters(): voidCODE
LOWtests/unit/Extension/Mention/MentionTest.php38 public function testConstructorAndGettersWithCustomLabel(): voidCODE
LOWtests/unit/Extension/Mention/MentionTest.php84 public function testLabelFunctionsWhenLabelDetached(): voidCODE
LOW…/Extension/Mention/Generator/CallbackGeneratorTest.php56 public function testWithAbstractInlineReturn(): voidCODE
LOW…/Extension/Mention/Generator/CallbackGeneratorTest.php75 public function testWithNoUrlMentionReturn(): voidCODE
LOW…/Extension/Mention/Generator/CallbackGeneratorTest.php89 public function testWithNewMentionButNoUrlReturn(): voidCODE
LOW…t/Extension/ExternalLink/ExternalLinkProcessorTest.php87 public static function dataProviderForTestHostMatches(): iterableCODE
LOW…t/Extension/ExternalLink/ExternalLinkProcessorTest.php126 public static function dataProviderForTestRelOptions(): iterableCODE
LOW…on/DisallowedRawHtml/DisallowedRawHtmlRendererTest.php57 public static function dataProviderForTestWithDefaultSettings(): iterableCODE
LOW…on/DisallowedRawHtml/DisallowedRawHtmlRendererTest.php114 public static function dataProviderForTestWithCustomSettings(): iterableCODE
LOW…t/Extension/Footnote/Renderer/FootnoteRendererTest.php42 public function testCustomClassAddedViaAST(): voidCODE
LOW…t/Extension/Footnote/Renderer/FootnoteRendererTest.php70 public function testIdPrefixConfiguration(): voidCODE
LOW…xtension/Footnote/Renderer/FootnoteRefRendererTest.php42 public function testCustomClassAddedViaAST(): voidCODE
LOW…xtension/Footnote/Renderer/FootnoteRefRendererTest.php70 public function testIdPrefixConfiguration(): voidCODE
221 more matches not shown…
Fake / Example Data34 hits · 45 pts
SeverityFileLineSnippetContext
LOWtests/benchmark/sample.md254 > This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,CODE
LOWtests/benchmark/sample.md254 > This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,CODE
LOWtests/benchmark/sample.md264 > This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,CODE
LOWtests/benchmark/sample.md264 > This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,CODE
LOWtests/benchmark/sample.md363 * Lorem ipsum dolor sit amet, consectetuer adipiscing elit.COMMENT
LOWtests/benchmark/sample.md363 * Lorem ipsum dolor sit amet, consectetuer adipiscing elit.COMMENT
LOWtests/benchmark/sample.md371 * Lorem ipsum dolor sit amet, consectetuer adipiscing elit.COMMENT
LOWtests/benchmark/sample.md371 * Lorem ipsum dolor sit amet, consectetuer adipiscing elit.COMMENT
LOWtests/benchmark/sample.md407 1. This is a list item with two paragraphs. Lorem ipsum dolorCODE
LOWtests/benchmark/sample.md424 only required to indent the first line. Lorem ipsum dolorCODE
LOWtests/functional/Extension/DescriptionList/spec.txt316: This is a description with two paragraphs. Lorem ipsumCODE
LOWtests/functional/Extension/DescriptionList/spec.txt317 dolor sit amet, consectetuer adipiscing elit. AliquamCODE
LOWtests/functional/Extension/DescriptionList/spec.txt345<dd><p>This is a description with two paragraphs. Lorem ipsumCODE
LOWtests/functional/Extension/DescriptionList/spec.txt346dolor sit amet, consectetuer adipiscing elit. AliquamCODE
LOW…sion/DescriptionList/DescriptionListRegressionTest.php36[Lorem ipsum dolor sit amet][foo], consectetur adipiscing elit. Cras vitaeCODE
LOW…sion/DescriptionList/DescriptionListRegressionTest.php36[Lorem ipsum dolor sit amet][foo], consectetur adipiscing elit. Cras vitaeCODE
LOW…sion/DescriptionList/DescriptionListRegressionTest.php47<p><a href="https://example.com">Lorem ipsum dolor sit amet</a>, consectetur adipiscing elit. Cras vitaeCODE
LOW…sion/DescriptionList/DescriptionListRegressionTest.php47<p><a href="https://example.com">Lorem ipsum dolor sit amet</a>, consectetur adipiscing elit. Cras vitaeCODE
LOWdocs/1.x/extensions/footnotes.md28Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi[^note1] leo risus, porta ac consectetur ac.CODE
LOWdocs/1.x/extensions/footnotes.md28Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi[^note1] leo risus, porta ac consectetur ac.CODE
LOWdocs/1.x/extensions/footnotes.md38 Lorem ipsum dolor sit amet, consectetur adipiscing elit.CODE
LOWdocs/1.x/extensions/footnotes.md38 Lorem ipsum dolor sit amet, consectetur adipiscing elit.CODE
LOWdocs/1.x/extensions/table-of-contents.md52 'placeholder' => null,CODE
LOWdocs/1.x/extensions/table-of-contents.md85- `'placeholder'` - Location is manually defined by a user-provided placeholder somewhere in the document (see the `placCODE
LOWdocs/1.x/extensions/table-of-contents.md91When combined with `'position' => 'placeholder'`, this setting tells the extension which placeholder content should be rCODE
LOWdocs/2.x/extensions/footnotes.md37Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi[^note1] leo risus, porta ac consectetur ac.CODE
LOWdocs/2.x/extensions/footnotes.md37Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi[^note1] leo risus, porta ac consectetur ac.CODE
LOWdocs/2.x/extensions/footnotes.md47 Lorem ipsum dolor sit amet, consectetur adipiscing elit.CODE
LOWdocs/2.x/extensions/footnotes.md47 Lorem ipsum dolor sit amet, consectetur adipiscing elit.CODE
LOWdocs/2.x/extensions/table-of-contents.md55 'placeholder' => null,CODE
LOWdocs/2.x/extensions/table-of-contents.md96- `'placeholder'` - Location is manually defined by a user-provided placeholder somewhere in the document (see the `placCODE
LOWdocs/2.x/extensions/table-of-contents.md102When combined with `'position' => 'placeholder'`, this setting tells the extension which placeholder content should be rCODE
LOW…c/Extension/TableOfContents/TableOfContentsBuilder.php31 public const POSITION_PLACEHOLDER = 'placeholder';CODE
LOW…Extension/TableOfContents/TableOfContentsExtension.php37 'placeholder' => Expect::anyOf(Expect::string(), Expect::null())->default(null),CODE
Over-Commented Block4 hits · 4 pts
SeverityFileLineSnippetContext
LOW…ctional/Extension/TableOfContents/xml/style-ordered.md1---COMMENT
LOW…nctional/Extension/TableOfContents/xml/style-bullet.md1---COMMENT
LOW…nctional/Extension/TableOfContents/md/style-ordered.md1---COMMENT
LOW…unctional/Extension/TableOfContents/md/style-bullet.md1---COMMENT
TODO Padding2 hits · 3 pts
SeverityFileLineSnippetContext
LOWdocs/2.x/customization/block-parsing.md144 // TODO: implement your continuation parsing methods hereCOMMENT
LOWdocs/2.x/customization/block-parsing.md150 // TODO: implement the tryStart() method hereCOMMENT
Slop Phrases2 hits · 2 pts
SeverityFileLineSnippetContext
LOW.github/ISSUE_TEMPLATE/2_Bug_report.yaml23 Markdown and/or config needed to reproduce the problem. Don't forget to mention any extensions you might hCODE
LOWsrc/Extension/FrontMatter/FrontMatterParser.php59 // Don't forget to add 1 because we stripped one out when trimming the trailing delimsCOMMENT