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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ### 1.Iterator 作為返回類型和函數參數 `注意:iterator 的“i”是小寫的,頂級接口,Iterator是它的子孫接口 ` **該函數可以被foreach 遍歷** ~~~ <?php // Iterable iterable /** * @param iterable $iterator iterable作為參數 * */ function index1(iterable $iterator){ var_dump($iterator); } $data=new ArrayObject([1,3,4]); index1( $data); // object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(3) { [0]=> int(1) [1]=> int(3) [2]=> int(4) } } 2 /** * @param int $vsh * @return iterator iterator作為返回值 * */ function gen(int $vsh):iterator { for ($vsh;$vsh<10;$vsh++) { yield $vsh; } } foreach (gen(2) as $value){ echo $value."<br>"; } //輸出 //3 //4 //5 //6 //7 //8 //9 ~~~ ### 子類或者子接口 [接口Traversable繼承Iterator接口](%E6%8E%A5%E5%8F%A3Traversable%E7%BB%A7%E6%89%BFIterator%E6%8E%A5%E5%8F%A3.md)
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