(PHP 5 >= 5.2.0, PHP 7)
RecursiveRegexIterator::__construct — Creates a new RecursiveRegexIterator.
$iterator
, string $regex
[, int $mode = self::MATCH
[, int $flags = 0
[, int $preg_flags = 0
]]] )Creates a new regular expression iterator.
iteratorThe recursive iterator to apply this regex filter to.
regexThe regular expression to match.
modeOperation mode, see RegexIterator::setMode() for a list of modes.
flagsSpecial flags, see RegexIterator::setFlags() for a list of available flags.
preg_flagsThe regular expression flags. These flags depend on the operation mode parameter:
| 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(). |
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";
}
}
?>
以上例程的输出类似于：
No children Children: test4 test5