时间:2021-07-01 10:21:17 帮助过:41人阅读
升级前版本:
PHP 7.1.14 (cli) (built: Feb 2 2018 08:42:59) ( NTS )Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.1.14, Copyright (c) 1999-2018, by Zend Technologies
with Xdebug v2.6.0, Copyright (c) 2002-2018, by Derick Rethans升级后版本:
PHP 7.2.2 (cli) (built: Feb 24 2018 17:51:12) ( ZTS DEBUG )Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.2, Copyright (c) 1999-2018, by Zend Technologies升级完成之后发现有几个框架在使用时都出现了问题,主要原因集中在7.2之后废弃了一些功能,下面列出几个常见的问题:
之前版本写法:
<?php
$array = array();
each($array);
// Deprecated: The each() function is deprecated. This message will be suppressed on further calls在7.2版本中会提示过时,可以使用foreach替代each方法,也可以自己修改each方法替代:
<?php
function func_new_each(&$array){
$res = array(); $key = key($array); if($key !== null){
next($array);
$res[1] = $res['value'] = $array[$key]; $res[0] = $res['key'] = $key;
}else{ $res = false;
} return $res;
}之前版本写法
<?php
count(''); // Warning: count(): Parameter must be an array or an object that implements Countable在7.2版本中将严格执行类型区分,参数类型不正确,将会出现警告,所以需要在使用count方法时注意参数的值,不过也可以通过自己修改方法来替代(不建议):
<?php
function func_new_count($array_or_countable,$mode = COUNT_NORMAL){
if(is_array($array_or_countable) || is_object($array_or_countable)){ return count($array_or_countable, $mode);
}else{ return 0;
}
}之前版本写法:
<?php
$newfunc = create_function('$a,$b', 'return "ln($a) + ln($b) = " . log($a * $b);'); echo "New anonymous function: $newfunc\n"; echo $newfunc(2, M_E) . "\n"; // outputs
// New anonymous function: lambda_1
// ln(2) + ln(2.718281828459) = 1.6931471805599
// Warning This function has been DEPRECATED as of PHP 7.2.0. Relying on this function is highly discouraged.在7.2版本中会有警告提示,可修改为匿名函数来替代:
<?php
$newfunc = function ($a,$b){
return "ln($a) + ln($b) = " . log($a * $b);
}; echo $newfunc(2, M_E) . "\n";以上就是升级之后暂时遇到的几个问题,其它相关修改可详看链家产品技术团队做的翻译及整理:PHP7.2 版本指南。
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