user2971638 user2971638 - 1 month ago 8
PHP Question

php - Fatal error: Call to undefined function mcrypt_get_iv_size() in AppServ

I found a problem when I use mcrypt_get_iv_size function via AppServ.

I try to find a topic that related to solved a problem.

However, I try yo download libmcrypt.dll into symtem32 and edit php.ini by removing a comment from ;extension=php_mcrypt.dll to extension=php_mcrypt.dll. Then restart apache.

Unfortunately, after reload a page to see a result after modify.

It still error as Fatal error: Call to undefined function mcrypt_get_iv_size() in C:\AppServ\www\folder\index.php on line 36

A function contains following:

class Encryption {
var $skey = "SuPerEncKey2010"; // 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, $iv);
return strtolower(trim($decrypttext));
}
}


Thanks

Answer

http://php.net/manual/en/mcrypt.requirements.php

mcrypt is already build in for PHP 5.3.x for Windows, so you don't need to install libmcrypt.dll on the your server.

It's seems like php_mcrypt.dll extension is not loaded.

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