Mid-Atlantic Developer Conference

A classe LimitIterator

Introdução

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Sinopse da classe

LimitIterator extends IteratorIterator implements OuterIterator , Traversable , Iterator {
/* Métodos */
public __construct ( Iterator $iterator [, int $offset = 0 [, int $count = -1 ]] )
public current ( void ) : mixed
public getInnerIterator ( void ) : Iterator
getPosition ( void ) : int
public key ( void ) : mixed
next ( void ) : void
rewind ( void ) : void
seek ( int $position ) : void
valid ( void ) : bool
}

Exemplos

Exemplo #1 LimitIterator usage example

<?php

// Create an iterator to be limited
$fruits = new ArrayIterator(array(
    
'apple',
    
'banana',
    
'cherry',
    
'damson',
    
'elderberry'
));

// Loop over first three fruits only
foreach (new LimitIterator($fruits03) as $fruit) {
    
var_dump($fruit);
}

echo 
"\n";

// Loop from third fruit until the end
// Note: offset starts from zero for apple
foreach (new LimitIterator($fruits2) as $fruit) {
    
var_dump($fruit);
}

?>

O exemplo acima irá imprimir:

string(5) "apple"
string(6) "banana"
string(6) "cherry"

string(6) "cherry"
string(6) "damson"
string(10) "elderberry"

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