The need to encrypt a string variable in web programming arises quite often. This may be necessary not only for working with passwords or other private data. For example, it is often easier to encrypt html code that needs to be saved to a file, database or cookie than to organize it to clear all forbidden characters before writing, and then restore them after reading. Below is one of the options for encrypting a string variable using PHP.
Instructions
Step 1
Use PHP's built-in base64_encode function to encode string variables. It has only one parameter that must be passed - the value of the encrypted variable. For example, the PHP code that will output the base64 MIME encoded text "encrypted string" to the page might look like this:
The encoded text will be like this: "5 + D46PTw7uLg7e3g / yDx8vDu6uA =".
Step 2
Use the built-in base64_decode function to decode base64 MIME encoded string variables. This function also has only one required parameter. For example, to decode and display the code obtained in the previous step, you can use the following line in PHP:
Step 3
Use a web service if you need to encode a word or test one-time, or if you cannot execute PHP scripts. For example, by going to the page https://tools4noobs.com/online_php_functions/base64_encode enter the desired word or text in the only field and click on the button labeled Base 64 encode. The script on the server will receive the entered data, apply the base64_encode function to it and place the encoded value in an additional input field. In it, the encrypted string can be copied and used at your discretion. If decryption is needed, you can use a similar web service that will apply the base64_decode function to the value you entered. The corresponding page on this site is located at
