PHP 7 和 PHP5 foreach 迭代指针移动区别

来源：互联网发布：新经济政策知乎编辑：程序博客网时间：2024/06/03 03:07

<?phpclass a {    private static  $arrCfg = array(300  =>array('money'=>1000,'tlen' =>300),900  =>array('money'=>1200,'tlen' =>900),1800 =>array('money'=>1500,'tlen' =>1800),3000 =>array('money'=>2500,'tlen' =>3000),);public function getNext($tlen = 0){if(!isset(self::$arrCfg[$tlen])){return array();}foreach (self::$arrCfg as $key=>$val){if($key == $tlen){$next = next(self::$arrCfg);return $next;}next(self::$arrCfg);}}}$a = new a();print_r($a->getNext(300));?>

PHP 7 下运行:

Array(    [money] => 1200    [tlen] => 900)

PHP 5 运行:

Array(    [money] => 1500    [tlen] => 1800)

<?phpclass a {    private static  $arrCfg = array(300  =>array('money'=>1000,'tlen' =>300),900  =>array('money'=>1200,'tlen' =>900),1800 =>array('money'=>1500,'tlen' =>1800),3000 =>array('money'=>2500,'tlen' =>3000),);public function getNext($tlen = 0){if(!isset(self::$arrCfg[$tlen])){return array();}foreach (self::$arrCfg as $key=>$val){if($key == $tlen){$next = current(self::$arrCfg);return $next;}// next(self::$arrCfg);}}}$a = new a();print_r($a->getNext(300));?>

Array(    [money] => 1000    [tlen] => 300)

PHP 5 运行:

Array(    [money] => 1200    [tlen] => 900)

目测是 PHP5 foreach 循环数组指针下移一位，PHP7 则不移动。

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