How to do php encryption and decryption

The reversible encryption based on these functions is:base64_encode(),urlencode()The corresponding decryption function:base64_decode(),urldecode(), examples are as follows:

1. The first encryption and decryption algorithm

2. The second decryption and decryption algorithm

3. The third encryption and decryption algorithm

For different needs, you can use different Encryption and decryption algorithm.

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