PHP BasicIterator::current示例

示例#1

文件： Iterator.php 项目： CodeBooks/php-master-write-cutting-edge-code

        $this->key = 0;
    }
    public function current()
    {
        return $this->data[$this->key];
    }
    public function key()
    {
        return $this->key;
    }
    public function next()
    {
        $this->key++;
        return true;
    }
    public function valid()
    {
        return isset($this->data[$this->key]);
    }
}
$iterator = new BasicIterator();
$iterator->rewind();
do {
    $key = $iterator->key();
    $value = $iterator->current();
    echo $key . ': ' . $value . PHP_EOL;
} while ($iterator->next() && $iterator->valid());
$iterator = new BasicIterator();
foreach ($iterator as $key => $value) {
    echo $key . ': ' . $value . PHP_EOL;
}

示例#2

文件： 02.php 项目： YidaChen/tutorial-php-advenced

    {
        $this->_key = 0;
    }
    public function current()
    {
        return $this->_list[$this->_key];
    }
    public function key()
    {
        return $this->_key;
    }
    public function next()
    {
        $this->_key++;
        return true;
    }
    public function valid()
    {
        return isset($this->_list[$this->_key]);
    }
}
$iterator = new BasicIterator($students);
$iterator->rewind();
do {
    $key = $iterator->key();
    $student = $iterator->current();
    echo "{$key} : {$student}\n";
} while ($iterator->next() && $iterator->valid());
foreach ($iterator as $key => $student) {
    echo "{$key} : {$student}\n";
}