php aes encryption and decryption

加密的时候先aes加密，在进行base64加密

<?php
/**
 * 利用mcrypt做AES加密解密
 */

class Aes
{
    /**
     * 算法,另外还有192和256两种长度
     */
    const CIPHER = MCRYPT_RIJNDAEL_128;
    /**
     * 模式 
     */
    const MODE = MCRYPT_MODE_ECB;
    
    /**
     * 加密
     * @param string $key 密钥
     * @param string $str 需加密的字符串
     * @return type 
     */
    public function encode( $key, $str ){
        $iv = mcrypt_create_iv(mcrypt_get_iv_size(self::CIPHER,self::MODE),MCRYPT_RAND);
        return mcrypt_encrypt(self::CIPHER, $key, $str, self::MODE, $iv);
    }
    
    /**
     * 解密
     * @param type $key
     * @param type $str
     * @return type 
     */
    public function decode( $key, $str ){
        $iv = mcrypt_create_iv(mcrypt_get_iv_size(self::CIPHER,self::MODE),MCRYPT_RAND);
        return mcrypt_decrypt(self::CIPHER, $key, $str, self::MODE, $iv);
    }
}
?>

The above introduces php aes encryption and decryption, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.