RecursiveRegexIterator::__construct()
(PHP 5 >= 5.2.0, PHP 7)
Creates a new RecursiveRegexIterator
说明
Creates a new regular expression iterator.
参数
- $iterator
The recursive iterator to apply this regex filter to.
- $regex
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.
- $preg_flags
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().
范例
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
参见
preg_match()
执行匹配正则表达式preg_match_all()
执行一个全局正则表达式匹配preg_replace()
执行一个正则表达式的搜索和替换preg_split()
通过一个正则表达式分隔字符串
RecursiveRegexIterator::ALL_MATCHES List all subdirectories and files. <?php $a = new RecursiveRegexIterator( new RecursiveDirectoryIterator( '/home/songoq' ), '/mydir/i', RecursiveRegexIterator::ALL_MATCHES ); foreach( new RecursiveIteratorIterator( $a ) as $s ) { echo $s."\n"; }