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<?php function my_simple_crypt( $string, $action = 'e' ) { // you may change these values to your own $secret_key = 'my_simple_secret_key'; $secret_iv = 'my_simple_secret_iv'; $output = false; $encrypt_method = "AES-256-CBC"; $key = hash( 'sha256', $secret_key ); $iv = substr( hash( 'sha256', $secret_iv ), 0, 16 ); if( $action == 'e' ) { $output = base64_encode( openssl_encrypt( $string, $encrypt_method, $key, 0, $iv ) ); } else if( $action == 'd' ){ $output = openssl_decrypt( base64_decode( $string ), $encrypt_method, $key, 0, $iv ); } return $output; } $encrypted = my_simple_crypt( 'Hello World!', 'e' ); echo $encrypted; $decrypted = my_simple_crypt( 'RTlOMytOZStXdjdHbDZtamNDWFpGdz09', 'd' );

preferences:
47.43 ms | 402 KiB | 5 Q