The distribution of complexity of units (measured with McCabe index).

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

Conditional Complexity Overall

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 20 most complex units

Unit	# lines	McCabe index	# params
private function scan() in experiments/Lexer.php	140	64	0
private function isExpressionStartFn() in src/Parser.php	71	59	0
private function parsePrimaryExpression() in src/Parser.php	69	41	1
private function parseStatementFn() in src/Parser.php	87	38	0
private function parseBinaryExpressionOrHigher() in src/Parser.php	78	32	2
private function isStatementStart() in src/Parser.php	37	31	1
private function parseUnaryExpressionOrHigher() in src/Parser.php	56	26	1
private function parsePostfixExpressionRest() in src/Parser.php	51	25	2
public static function getTokensArrayFromContent() in src/PhpTokenizer.php	99	25	4
private function scanDqEscapeSequence() in experiments/Lexer.php	49	24	3
public function getResolvedName() in src/Node/QualifiedName.php	41	20	1
private function isListTerminator() in src/Parser.php	37	19	1
private function parseAttributeStatement() in src/Parser.php	37	16	1
public function getImportTablesForCurrentScope() in src/Node.php	55	15	0
private function isValidListElement() in src/Parser.php	26	15	2
private function getParseListElementFn() in src/Parser.php	25	14	1
private function scanFloatingPointLiteral() in experiments/Lexer.php	42	13	3
private function isClassMemberDeclarationStart() in src/Parser.php	18	13	1
private function isTraitMemberDeclarationStart() in src/Parser.php	18	13	1
public function getNamespaceDefinition() in src/Node.php	26	12	0