RegexIterator::getMode

<?php

$test = array ('str1' => 'test 1', 'teststr2' => 'another test', 'str3' => 'test 123');

$arrayIterator = new ArrayIterator($test);
$regexIterator = new RegexIterator($arrayIterator, '/^[a-z]+/', RegexIterator::GET_MATCH);

$mode = $regexIterator->getMode();
if ($mode & RegexIterator::GET_MATCH) {
    echo 'Getting the match for each item.';
} elseif ($mode & RegexIterator::ALL_MATCHES) {
    echo 'Getting all matches for each item.';
} elseif ($mode & RegexIterator::MATCH) {
    echo 'Getting each item if it matches.';
} elseif ($mode & RegexIterator::SPLIT) {
    echo 'Getting split pieces of each.';
}
?>