$matchRegexps
$matchRegexps :
MultiplePcreFilterIterator filters files using patterns (regexps, globs or strings).
isAccepted(string  $string) : boolean
                Checks whether the string is accepted by the regex filters.
If there is no regexps defined in the class, this method will accept the string. Such case can be handled by child classes before calling the method if they want to apply a different behavior.
| string | $string | The string to be matched against filters  | 
                            
<?php
/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\Finder\Tests\Iterator;
use PHPUnit\Framework\TestCase;
use Symfony\Component\Finder\Iterator\MultiplePcreFilterIterator;
class MultiplePcreFilterIteratorTest extends TestCase
{
    /**
     * @dataProvider getIsRegexFixtures
     */
    public function testIsRegex($string, $isRegex, $message)
    {
        $testIterator = new TestMultiplePcreFilterIterator();
        $this->assertEquals($isRegex, $testIterator->isRegex($string), $message);
    }
    public function getIsRegexFixtures()
    {
        return array(
            array('foo', false, 'string'),
            array(' foo ', false, '" " is not a valid delimiter'),
            array('\\foo\\', false, '"\\" is not a valid delimiter'),
            array('afooa', false, '"a" is not a valid delimiter'),
            array('//', false, 'the pattern should contain at least 1 character'),
            array('/a/', true, 'valid regex'),
            array('/foo/', true, 'valid regex'),
            array('/foo/i', true, 'valid regex with a single modifier'),
            array('/foo/imsxu', true, 'valid regex with multiple modifiers'),
            array('#foo#', true, '"#" is a valid delimiter'),
            array('{foo}', true, '"{,}" is a valid delimiter pair'),
            array('[foo]', true, '"[,]" is a valid delimiter pair'),
            array('(foo)', true, '"(,)" is a valid delimiter pair'),
            array('<foo>', true, '"<,>" is a valid delimiter pair'),
            array('*foo.*', false, '"*" is not considered as a valid delimiter'),
            array('?foo.?', false, '"?" is not considered as a valid delimiter'),
        );
    }
}
class TestMultiplePcreFilterIterator extends MultiplePcreFilterIterator
{
    public function __construct()
    {
    }
    public function accept()
    {
        throw new \BadFunctionCallException('Not implemented');
    }
    public function isRegex($str)
    {
        return parent::isRegex($str);
    }
    public function toRegex($str)
    {
        throw new \BadFunctionCallException('Not implemented');
    }
}