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@ 2018-08-19T19:33:22Z

<?php

$ll = new SplDoublyLinkedList();

$ll->push('ze');
$ll->push('ome');
$ll->push('yei');
$ll->push('nahui');

$ll->rewind();

// HHVM works fine
$iterations_done = iterator_apply($ll, function(Iterator $it) {

    echo implode("\t=>", array(
        $it->key(),
        $it->current(),
        ucfirst($it->current())
    )),"\n";
    
    return true;

}, array($ll));

echo "Did iterate {$iterations_done} times \n";

$ll->rewind();

$iterations_done = iterator_apply($ll, function(Iterator $it) {

    echo implode("\t=>", array(
        $it->key(),
        $it->current(),
        ucfirst($it->current())
    )),"\n";
    
    $it->next();
    
    return true;

}, array($ll));

echo "Did iterate {$iterations_done} times \n";

$ll->setIteratorMode(SplDoublyLinkedList::IT_MODE_FIFO | SplDoublyLinkedList::IT_MODE_DELETE);

var_dump($ll->count());

foreach($ll as $key => $val) {
    echo "{$key}\t",ucfirst($val),"\n";
}

var_dump($ll->count());

Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: 0 =>ze =>Ze 0 =>ze =>Ze 0 =>ze =>Ze 0 =>ze =>Ze Did iterate 4 times 0 =>ze =>Ze 1 =>ome =>Ome 2 =>yei =>Yei 3 =>nahui =>Nahui Did iterate 4 times int(4) 0 Ze 0 Ome 0 Yei 0 Nahui int(0)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_FUNCTION in /in/ARLUZ on line 13
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_FUNCTION in /in/ARLUZ on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/ARLUZ on line 13
Process exited with code 255.

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