RecursiveRegexIterator::__construct

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

RecursiveRegexIterator::__constructCreates a new RecursiveRegexIterator

说明

public RecursiveRegexIterator::__construct ( RecursiveIterator $iterator , string $regex , int $mode = self::MATCH , int $flags = 0 , int $preg_flags = 0 )

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

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";
    }

}
?>

以上例程的输出类似于:

No children
Children: test4 test5

参见