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PHP RegexIterator::__construct

PHP original manual for RegexIterator::__construct [ show | php.net ]

RegexIterator::__construct

(PHP 5 >= 5.2.0, PHP 7)

RegexIterator::__construct — Create a new RegexIterator

Description

public RegexIterator::__construct ( Iterator $iterator , string $regex [, int $mode = self::MATCH [, int $flags = 0 [, int $preg_flags = 0 ]]] )

Create a new RegexIterator which filters an Iterator using a regular expression.

Parameters

iterator

The 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
RegexIterator::ALL_MATCHES See preg_match_all().
RegexIterator::GET_MATCH See preg_match().
RegexIterator::MATCH See preg_match().
RegexIterator::REPLACE none.
RegexIterator::SPLIT See preg_split().

Errors/Exceptions

Throws an InvalidArgumentException if the regex argument is invalid.

Examples

Example #1 RegexIterator::__construct() example

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

<?php
$arrayIterator = new ArrayIterator(array('test 1', 'another test', 'test 123'));
$regexIterator = new RegexIterator($arrayIterator, '/^test/');

foreach ($regexIterator as $value) {
    echo $value . "\n";
}
?>

The above example will output something similar to:

test 1
test 123

See Also