mcrypt_create_iv

PHP 4, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0
mcrypt_create_iv - Creates an initialization vector (IV) from a random source
Manual
Code Examples

Example #1 mcrypt_create_iv Example

<?php
$size = mcrypt_get_iv_size(MCRYPT_CAST_256, MCRYPT_MODE_CFB);
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PHP Version: