ArrayIterator::current()
(PHP 5,PHP 7)
Return current array entry
说明
public ArrayIterator::current(void) : mixed
Get the currentarrayentry.
参数
此函数没有参数。
返回值
The currentarrayentry.
范例
Example#1ArrayIterator::current()example
<?php $array = array('1' => 'one', '2' => 'two', '3' => 'three'); $arrayobject = new ArrayObject($array); for($iterator = $arrayobject->getIterator(); $iterator->valid(); $iterator->next()) { echo $iterator->key() . ' => ' . $iterator->current() . "\n"; } ?>
以上例程会输出:
1 => one 2 => two 3 => three
ArrayIterator is only used for interating simple arrays of which the value part is not another array. You can test it with a more complex array like this: $arr = array ( \\\'Section 1\\\' => array ( \\\'Cat 1\\\' => array ( 1 => array ( 1 => \\\'So 1\\\', 2=> \\\'So 2\\\' ), 2 => \\\'So 2\\\' ), \\\'Cat 2\\\' => array ( \\\'Sub-cat 1\\\' => array ( 1 => \\\'So 1\\\', 2=> \\\'So 2\\\' ), \\\'Sub-cat 2\\\' => \\\'So 2\\\' ) ), \\\'Section 2\\\' => array ( \\\'Cat 1\\\' => array ( ), \\\'Cat 2\\\' => array ( \\\'Sub-cat 1\\\' => array ( 1 => \\\'So 1\\\', 2=> \\\'So 2\\\' ), \\\'Sub-cat 2\\\' => \\\'So 2\\\' ) ) ); $arrayobject = new ArrayObject($arr); for($iterator = $arrayobject->getIterator(); $iterator->valid(); $iterator->next()) { echo $iterator->key() . \\\' => \\\' . $iterator->current() . \\\"<br />\\\"; } The above scriptlet will return Section 1 => Array Section 2 => Array because it can not recursively iterate throught the array. Do the following instead (in PHP5.1): $arrayIterator = new RecursiveArrayIterator($arr); $iterator = new RecursiveIteratorIterator($arrayIterator); foreach ($iterator as $val) { echo $val.\\\'<br/>\\\'; }