记laravel项目本地环境PHP7.1,线上7.2,报错each函数废弃问题-技术圈

记laravel项目本地环境PHP7.1,线上7.2,报错each函数废弃问题

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· 2020-09-25

the each() function is deprecated. this message will be suppressed on further calls laravel

例子1:

php7.1写法

if ( is_array( $u ) ) {            while( list( $key ) = each( $u ) ) {                $u = $u[$key];                break;            }        }

改为php7.2写法

if ( is_array( $u ) ) {          $u = current($u);        }

As PHP7.2 says, I suggest to use foreach() function as a substitute of deprecated each(). Here I let a couple of examples that works to me in Wordpress.----正如PHP7.2所说，我建议使用foreach（）函数来替代已弃用的each（）。这里我举几个在Wordpress中对我有用的例子。

(OLD) while ( list( $branch, $sub_tree ) = each( $_tree ) ) {...}(NEW) foreach ( (Array) $_tree as $branch => $sub_tree ) {...}  (OLD) while ( $activity = each( $this->init_activity ) ) {...}(NEW) foreach ( $this->init_activity as $activity ) {...} (old)while(list($file, $info) = each($this->images))(new)foreach($this->images as $file => $info) {    // ...}

例子2

16548 while (list($id, $name) = each($attr_array[1])) {  //7.1 I replaced the line with the next code in both lines and it worked,替换为如下 foreach($attr_array[1] as $id => $name) {  //7.2

例子3:我的例子:支付过程中生成签名时出现错误

public function createLinkString($param)    {        $arg = "";        //数组排序        ksort($param);        reset($param);        //7.1写法        /*while (list ($key, $val) = each($param)) {            if ($key == "sign") continue;            if (!empty($key)) {                $arg .= $key . "=";            }            if (is_array($val)) {                $arg .= $this->createLinkString($val) . "&";            } else {                $arg .= $val . "&";            }        }*/        //7.2写法        foreach ($param as $key => $val) {            if ($key == "sign") continue;            if (!empty($key)) {                $arg .= $key . "=";            }            if (is_array($val)) {                $arg .= $this->createLinkString($val) . "&";            } else {                $arg .= $val . "&";            }        }        //去掉最后一个&字符        $arg = substr($arg, 0, strlen($arg) - 1);        return $arg;    }

总之，一句话，php7.2版本中each函数废弃了不能用，直接用foreach替换就ok了。