DisallowVariableVariableSniff.php

<?php

declare (strict_types=1);
namespace SlevomatCodingStandard\Sniffs\Variables;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
use const T_DOLLAR;
use const T_DOLLAR_OPEN_CURLY_BRACES;
class DisallowVariableVariableSniff implements Sniff {
    public const CODE_DISALLOWED_VARIABLE_VARIABLE = 'DisallowedVariableVariable';
    
    /**
     * @return array<int, (int|string)>
     */
    public function register() : array {
        return [
            T_DOLLAR,
            T_DOLLAR_OPEN_CURLY_BRACES,
        ];
    }
    
    /**
     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
     * @param int $pointer
     */
    public function process(File $phpcsFile, $pointer) : void {
        $phpcsFile->addError('Use of variable variable is disallowed.', $pointer, self::CODE_DISALLOWED_VARIABLE_VARIABLE);
    }

}