A detailed introduction to MD5 values

This article mainly introduces PHP to get the MD5 value of the file and to determine whether it was modified, message Digest algorithm MD5 (Chinese named message Digest algorithm fifth version) for the computer security field widely used a hash function, to provide the integrity of the message protection, Need friends can refer to the following due to the need to determine whether the uploaded files have been modified, need to record the MD5 value of the uploaded file, here to record the way to get the file MD5 value. The code is as follows: if (Isset ($_files[' Multimedia ')) && $_files[' multimedia '] [' ERROR ']==0] {$file _name = $_files[' Multimedia ' [' Name ']; $size = Get

1. PHP Gets the MD5 value of the file and determines whether the example is modified

Introduction: This article mainly introduces PHP to get the MD5 value of the file and to determine whether it was modified, message Digest algorithm MD5 (Chinese named message Digest algorithm fifth version) for the computer security field widely used a hash function, to provide the integrity of the message protection, A friend you need can refer to the following

2. Two ways to get MD5 values using Java

Introduction: This article is to use Java to obtain MD5 value of the two methods for a detailed analysis of the introduction, the need for a friend reference

3. MD5 value instances for Python compute files

Introduction: The following small series for everyone to bring a Python calculation file MD5 value instance. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

4. PHP iterates through the directory, generates MD5 values for each file in the directory, and writes to the result file

Introduction: This article introduces you to PHP traversal directory, generate the MD5 value of each file in the directory and write to the result file, the need for friends can refer to the following

5. Teach you to use Python to get the MD5 value of a string

Summary: It is recently necessary to use Python to get the MD5 value of a string. Today put the code to share with you.

6. PHP Traversal Directory

Summary: PHP iterates through the MD5 values of each file in the directory generation directory and writes to the result file for code sharing

7. PowerPoint templates silently and simply write a template engine

Summary: PowerPoint templates: PowerPoint templates silently and simply write a template engine: The engine file copy code code is as follows: <?php/** * Silently based on the Discuz template engine developed by the OOP class template engine, The template cache can be supported and the MD5 value of the hash is generated. By the hash value to determine whether the template is modified, if modified to regenerate the cache file, if not modified, directly call the cache file. * Version: 1.0.0.1 beta version */class mmtp{var $left _tags= "{";

8. PHP iterates through the directory, generates MD5 values for each file in the directory, and writes to the result file

Summary: PHP iterates through directories, generates MD5 values for each file in the directory, and writes to the result file

9. Silently and simply wrote a template engine _php tutorial

Introduction: silently and simply wrote a template engine. The engine file copy code code is as follows:? PHP/** * Silently based on the Discuz template engine developed by the OOP class template engine, can support the template cache and generate hash MD5 value. The template is judged by the hash value.

PHP get the upload file MD5 code _php tutorial

Introduction: PHP Gets the MD5 code of the uploaded file. Since it is necessary to determine if the uploaded file has been modified, the MD5 value of the uploaded file needs to be recorded, and the method of obtaining the MD5 value of the file is recorded here. if (Isset ($_files[' multimedia ') $_files['

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