CodeIgniter框架中不建议使用函数mcrypt_create_iv() [英] Function mcrypt_create_iv() is deprecated within CodeIgniter framework
问题描述
<?php
class Encryption {
var $skey = "1234561234561234"; // you can change it
public function safe_b64encode($string) {
$data = base64_encode($string);
$data = str_replace(array('+','/','='),array('-','_',''),$data);
return $data;
}
public function safe_b64decode($string) {
$data = str_replace(array('-','_'),array('+','/'),$string);
$mod4 = strlen($data) % 4;
if ($mod4) {
$data .= substr('====', $mod4);
}
return base64_decode($data);
}
public function encode($value){
if(!$value){return false;}
$text = $value;
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$crypttext = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $this->skey, $text, MCRYPT_MODE_ECB, $iv);
return trim($this->safe_b64encode($crypttext));
}
public function decode($value){
if(!$value){return false;}
$crypttext = $this->safe_b64decode($value);
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$decrypttext = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $this->skey, $crypttext, MCRYPT_MODE_ECB, $iv);
return trim($decrypttext);
}
}
这是我的 encryption.php
文件。我试图解决此错误并进行了大量研究,但找不到合适的答案。我是PHP新手。
It's my encryption.php
file. I tried to solve this error and research lots of time but i could not find proper answer. I am newer in PHP.
错误:
遇到PHP错误
A PHP Error was encountered
严重性:8192
消息:不建议使用函数mcrypt_create_iv()
Message: Function mcrypt_create_iv() is deprecated
文件名:libraries / Encryption.php
Filename: libraries/Encryption.php
行号:27
推荐答案
手册 http://php.net/manual/zh-CN/function.mcrypt-create-iv.php 指出:
警告
此函数在PHP 7.1.0中已弃用,在PHP 7.2.0中已删除。
This function was DEPRECATED in PHP 7.1.0, and REMOVED in PHP 7.2.0.
此功能的替代方案包括:
Alternatives to this function include:
- random_bytes()
如果您不想使用 random_bytes()
,在此处显示:
There is an alternate solution if you don't want to use random_bytes()
, and it is shown here:
- PHP 7 - mcrypt deprecated, need alternative
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