Source for file FunctionDuplicateArgumentSniff.php
Documentation is available at FunctionDuplicateArgumentSniff.php
* Checks that duplicate arguments are not used in function declarations.
* @author Greg Sherwood <gsherwood@squiz.net>
* @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
* @license https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
namespace PHP_CodeSniffer\Standards\Squiz\Sniffs\Functions;
use PHP_CodeSniffer\Sniffs\Sniff;
use PHP_CodeSniffer\Files\File;
class FunctionDuplicateArgumentSniff implements Sniff
* Returns an array of tokens this test wants to listen for.
public function register ()
return array (T_FUNCTION );
* Processes this test, when one of its tokens is encountered.
* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
public function process (File $phpcsFile, $stackPtr)
$tokens = $phpcsFile->getTokens ();
$openBracket = $tokens[$stackPtr]['parenthesis_opener'];
$closeBracket = $tokens[$stackPtr]['parenthesis_closer'];
$foundVariables = array ();
for ($i = ($openBracket + 1 ); $i < $closeBracket; $i++ ) {
if ($tokens[$i]['code'] === T_VARIABLE ) {
$variable = $tokens[$i]['content'];
if (in_array($variable, $foundVariables) === true ) {
$error = 'Variable "%s" appears more than once in function declaration';
$data = array ($variable);
$phpcsFile->addError ($error, $i, 'Found', $data);
$foundVariables[] = $variable;
Documentation generated on Mon, 11 Mar 2019 15:27:32 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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