This function will provide you a two-way system to encrypt a string or decrypt an encrypted string.
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/** * Encrypt and decrypt * * @author Nazmul Ahsan <n.mukto@gmail.com> * @link http://nazmulahsan.me/simple-two-way-function-encrypt-decrypt-string/ * * @param string $string string to be encrypted/decrypted * @param string $action what to do with this? e for encrypt, d for decrypt */ 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 $output; } |
So, how to encrypt a string?
Just call this function and pass your string. Additionally set your second parameter to 'e' (optional). To encrypt Hello World!, write-
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$encrypted = my_simple_crypt( 'Hello World!', 'e' ); |
It’ll generate a encrypted string RTlOMytOZStXdjdHbDZtamNDWFpGdz09
And, how to decrypt?
Pass your encrypted string to the function and set second parameter to 'd'.
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$decrypted = my_simple_crypt( 'RTlOMytOZStXdjdHbDZtamNDWFpGdz09', 'd' ); |
