PHP operates redis encapsulated classes
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phpnew template engine class
Template engine library54142017-11-20
PHP common form regular validation class
Data validation library46182017-11-20
PHP uses upload encapsulation class to upload files
File upload class library99462017-11-18
A simple file caching class for php
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PHP local matching ip address class
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Practical php file operation class
File processing library62812017-11-17
php verification code class
Verification code library99222017-11-16
PHP implements paging class
Pagination library56382017-11-16
PHP image processing class (with examples)
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Encryption process:
Read the source file, encrypt it with base64_encode, and use the 52 uppercase and lowercase letters obtained by shuffling as the secret key for replacement
$c=strtr (ciphertext, corresponding to the letter to be replaced, the letter to be replaced);
Link the two secret keys and the ciphertext to form the main content of the file to be encrypted
Finally, according to the template format written in advance, combine the base64_decode, strtr, and substr commands respectively, and put the combined ciphertext into the template and base64_encode the encryption here,
Write the file to be encrypted.
Encryption and decryption class library49352017-11-14