<?phpnamespace App\Fixers;
use PhpCsFixer\AbstractFixer;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;
useSplFileInfo;
class SnakeCaseVariableFixer extends AbstractFixer
{/** * https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/blob/d208496b85c57217e76502b55e2228f3bfe7452b/src/FixerFactory.php#L131 */publicfunction getName():string{return'App/snake_case_variable';
}publicfunction getDefinition(): FixerDefinition
{returnnew FixerDefinition('Variable names should be in snake_case.',
[new CodeSample('<?php $camelCase = "example";'),
]);
}publicfunction isCandidate(Tokens $tokens):bool{return$tokens->isAllTokenKindsFound([T_VARIABLE]);
}publicfunction applyFix(SplFileInfo$file, Tokens $tokens):void{foreach($tokensas$index=>$token){if($token->isGivenKind(T_VARIABLE)){/** * This section processes the exclusion of protected variables. * When the variable is protected, it will be preceded by 'protected' and a space, * both of which are tokens. Thus, we check the token value at $index - 2 to identify * if it is 'protected' and skip processing if so. */if($index>2){$previousToken=$tokens[$index-2];
if($previousToken->isGivenKind(T_PROTECTED)){continue;
}}$variable_name=$token->getContent();
$snake_case_name=$this->convertToSnakeCase($variable_name);
if($variable_name!==$snake_case_name){$tokens[$index]=new Token([T_VARIABLE, $snake_case_name]);
}}}}privatefunction convertToSnakeCase($string):string{return'$'.strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', substr($string, 1)));
}}
