# blenc_encrypt

(PECL blenc >= 5)

blenc_encrypt — Encrypt a PHP script with BLENC

### 说明

blenc_encrypt ( string `$plaintext` , string `$encodedfile` [, string `$encryption_key` ] ) : string

Encrypt the `plaintext` content and write it into `encodedfile`

### 参数

`plaintext`

  A source code to encrypt. Does not need to contain opening/closing PHP tags

`encodedfile`

  The filename where BLENC will save the encoded source.

`encryption_key`

  The key that BLENC will use to encrypt plaintext content. If not given BLENC will create a valid key.

### 返回值

BLENC will return the redistributable key that must be saved into key_file: the path of key_file is specified at runtime with the option blenc.key_file

### 范例

Example #1 blenc_encrypt() example

    <?php

    /* read the PHP source code */
    $source_code = file_get_contents("my_source_to_protect.php");

    /* create the encrypted version */
    $redistributable_key = blenc_encrypt($source_code, "my_source_encoded.php");

    /* read which is the key_file */
    $key_file = ini_get('blenc.key_file');

    /* save the redistributable key */
    file_put_contents($key_file, $redistributable_key, FILE_APPEND);
    ?>