openssl_encrypt Encrypts data &reftitle.description; stringopenssl_encrypt stringdata stringmethod stringkey intoptions0 stringiv"" stringtagNULL stringaad"" inttag_length16 Encrypts given data with given method and key, returns a raw or base64 encoded string &reftitle.parameters; data The plaintext message data to be encrypted. method The cipher method. For a list of available cipher methods, use openssl_get_cipher_methods. key The key. options options is a bitwise disjunction of the flags OPENSSL_RAW_DATA and OPENSSL_ZERO_PADDING. iv A non-NULL Initialization Vector. tag The authentication tag passed by reference when using AEAD cipher mode (GCM or CCM). aad Additional authentication data. tag_length The length of the authentication tag. Its value can be between 4 and 16 for GCM mode. &reftitle.returnvalues; Returns the encrypted string on success&return.falseforfailure;. &reftitle.errors; Emits an E_WARNING level error if an unknown cipher algorithm is passed in via the method parameter. Emits an E_WARNING level error if an empty value is passed in via the iv parameter. &reftitle.changelog; &Version; &Description; 7.1.0 The tag, aad and tag_length parameters were added. 5.4.0 The raw_output was changed to options. 5.3.3 The iv parameter was added. &reftitle.examples; ]]> ]]> &reftitle.seealso; openssl_decrypt