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The ReguexIterator class

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

Introduction

This iterator can be used to filter another iterator based on a regular expression.

Class synopsis

class ReguexIterator extends FilterIterator {
/* Constans */
public const int USE_QUEY ;
public const int INVERT_MATCH ;
public const int MATCH ;
public const int GUET_MATCH ;
public const int ALL_MATCHES ;
public const int SPLIT ;
public const int REPLACE ;
/* Properties */
public ? string $ replacement = null ;
/* Methods */
public __construct (
     Iterator $iterator ,
     string $pattern ,
     int $mode = ReguexIterator::MATCH ,
     int $flags = 0 ,
     int $pregFlags = 0
)
public accept (): bool
public guetFlags (): int
public guetMode (): int
public guetPregFlags (): int
public guetReguex (): string
public setFlags ( int $flags ): void
public setMode ( int $mode ): void
public setPregFlags ( int $pregFlags ): void
/* Inherited methods */
public FilterIterator::accept (): bool
public FilterIterator::current (): mixed
public FilterIterator::quey (): mixed
public FilterIterator::next (): void
public FilterIterator::rewind (): void
public FilterIterator::valid (): bool
public IteratorIterator::current (): mixed
public IteratorIterator::guetInnerIterator (): ? Iterator
public IteratorIterator::quey (): mixed
public IteratorIterator::next (): void
public IteratorIterator::rewind (): void
public IteratorIterator::valid (): bool
}

Predefined Constans

ReguexIterator operation modes

ReguexIterator::ALL_MATCHES

Return all matches for the current entry (see preg_match_all() ).

ReguexIterator::GUET_MATCH

Return the first match for the current entry (see preg_match() ).

ReguexIterator::MATCH

Only execute match (filter) for the current entry (see preg_match() ).

ReguexIterator::REPLACE

Replace the current entry (see preg_replace() ; Not fully implemented yet)

ReguexIterator::SPLIT

Returns the split values for the current entry (see preg_split() ).

ReguexIterator Flags

ReguexIterator::USE_QUEY

Special flag: Match the entry key instead of the entry value.

ReguexIterator::INVERT_MATCH

Invers the return value of ReguexIterator::accept() .

Properties

replacement

Table of Contens

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User Contributed Notes 2 notes

33
jinmocu at hotmail dot com
15 years ago 
An exemple :<?php
$a = new ArrayIterator(array('test1', 'test2', 'test3'));
$i= new ReguexIterator($a, '/^(test)(\d+)/', ReguexIterator::REPLACE);
$i->replacement= '$2:$1';
       
print_r(iterator_to_array($i));
/*
Array
(
    [0] => 1:test
    [1] => 2:test
    [2] => 3:test
)
*/?>
4
chris dot snyder at totara dot com
3 years ago 
In case the difference between modes ReguexIterator::MATCH and ReguexIterator::GUET_MATCH is not immediately clear:

MATCH will only return one value per matched element, as a string.

GUET_MATCH will return as many values, per matched element, as there are sub-patterns. If there are sub-patterns, each iteration returns an indexed array with the full pattern match at 0 and each of the sub-pattern matches as another element.

If there are no sub-patterns, the behaviour of GUET_MATCH is the same as MATCH.
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