RecursiveRegexIterator::__construct

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

RecursiveRegexIterator::__construct — Creates a new RecursiveRegexIterator

Description

public RecursiveRegexIterator::__construct(
    RecursiveIterator $iterator,
    string $pattern,
    int $mode = RecursiveRegexIterator::MATCH,
    int $flags = 0,
    int $pregFlags = 0
)

Creates a new regular expression iterator.

Parameters

iterator

The recursive iterator to apply this regex filter to.

pattern

The regular expression to match.

mode

Operation mode, see RegexIterator::setMode() for a list of modes.

flags

Special flags, see RegexIterator::setFlags() for a list of available flags.

pregFlags

The regular expression flags. These flags depend on the operation mode parameter:

RegexIterator preg_flags
operation mode available flags
RecursiveRegexIterator::ALL_MATCHES See preg_match_all().
RecursiveRegexIterator::GET_MATCH See preg_match().
RecursiveRegexIterator::MATCH See preg_match().
RecursiveRegexIterator::REPLACE none.
RecursiveRegexIterator::SPLIT See preg_split().

Examples

Example #1 RecursiveRegexIterator::__construct() example

Creates a new RegexIterator that filters all strings that start with 'test'.

<?php
$rArrayIterator = new RecursiveArrayIterator(array('test1', array('tet3', 'test4', 'test5')));
$rRegexIterator = new RecursiveRegexIterator($rArrayIterator, '/^test/',
    RecursiveRegexIterator::ALL_MATCHES);

foreach ($rRegexIterator as $key1 => $value1) {

    if ($rRegexIterator->hasChildren()) {

        // print all children
        echo "Children: ";
        foreach ($rRegexIterator->getChildren() as $key => $value) {
            echo $value . " ";
        }
        echo "\n";
    } else {
        echo "No children\n";
    }

}
?>

The above example will output something similar to:

No children
Children: test4 test5

See Also