RecursiveRegexIterator::__construct

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

RecursiveRegexIterator::__construct — Creates a new RecursiveRegexIterator

说明

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

Creates a new regular expression iterator.

参数

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().

示例

示例 #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";
    }

}
?>

以上示例的输出类似于：

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

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＋添加备注

用户贡献的备注 1 note

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-1

SongoQ ¶

15 years ago

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";
}

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