10 recommended articles about the md5() function() function

The application scenarios for generating unique IDs are very common, such as temporary cache file names, temporary variables, temporary security codes, etc. The uniqid() function generates a unique ID based on the current time in microseconds. Since generating a unique ID is tied to microsecond time, the uniqueness of the ID is very reliable. The generated unique ID returns a string that is 13 strings long by default. If the prefix of the unique ID is not defined, it can return up to 23 strings long. If combined with the md5() function, the reliability of the generated unique ID will be higher. , the biggest advantage of this generated ID over random ID is that it can be sorted, especially some values ​​that need to be stored in the database. 1. The function prototype string uniqid ([string prefix [, bool more_entropy]]) can define the prefix and length of the unique ID. 2. The version is compatible with PHP 3, PHP 4, PHP 5. 3. Basic usage and example of the function 1, generate a unique ID< ;?php echo&am

1. uniqid() function 10 recommended content

Introduction: Application scenarios for generating unique IDs are very common, such as temporary cache file names, temporary variables, temporary security codes, etc. The uniqid() function generates a unique ID based on the current time in microseconds. Since generating a unique ID is tied to microsecond time, the uniqueness of the ID is very reliable. The generated unique ID returns a string that is 13 strings long by default. If the prefix of the unique ID is not defined, it can return up to 23 strings long. If combined with the md5() function, the reliability of the generated unique ID will be higher. , the biggest advantage of this generated ID over random ID is...

2. Summary of the definition and usage of the md5() function in php

Introduction: PHP encryption function—md5() function encryption What is the MD5() function? The MD5() function is the MD5 hash value of the calculator string, using the MD5 algorithm. The full name of MD5 is Message-Digest Algorithm 5. Its function is to calculate data information of different lengths into a 128-bit value through a series of algorithms. The value is to turn a byte string of any length into a large integer of a certain length. Note that what is said here is "byte string", not "string", because this transformation is only related to the value of the byte, and has nothing to do with the character set or encoding...

3. PHP encryption function—md5() function encryption example usage

##Introduction: MD5 The () function is the MD5 hash value of the calculator string, using the MD5 algorithm. The full name of MD5 is Message-Digest Algorithm 5. Its function is to calculate data information of different lengths into a 128-bit value through a series of algorithms. Numeric value is to convert a byte string of any length into a large integer of a certain length. Note that this is "byte string", not "string", because this transformation is only related to the byte value and has nothing to do with the character set or encoding method.

4. php object-oriented problem

Introduction: {code...} My question is: Why does the md5() function report an error when used as shown above? ? Can't the attributes in PHP object-oriented use PHP's own methods? ? ?

5. vbscript.encode PHP encryption functions md5, crypt, base64_encode and other usage introduction

Introduction: vbscript .encode:vbscript.encode PHP encryption functions md5, crypt, base64_encode and other usage introduction: The irreversible encryption functions are: md5(), crypt() md5() is used to calculate MD5 hash. The syntax is: string md5(string str); crypt() encrypts the string using UNIX's standard encryption DES module. This is a one-way encryption function and cannot be decrypted. To compare strings, place the first two characters of the encrypted string in the salt parameter, and then compare the encrypted strings. The syntax is: string cry

6. PHP encryption technology

Introduction:: PHP encryption technology: I learned some knowledge about PHP encryption a few days ago. Now I will summarize several encryption forms in PHP: Md5() encryption algorithm Crypt() encryption algorithm Sha1() encryption algorithm URL encoding Encryption technology Base64 encoding encryption technology Md5() encryption algorithm Syntax: string md5(string $str [, bool $raw_output = false ] ) $str: original string Optional (not commonly used

7. Introduction to the use of php's encryption functions md5, crypt, base64_encode, etc._PHP tutorial

Introduction: Introduction to the use of php's encryption functions md5, crypt, base64_encode, etc. . The irreversible encryption functions are: md5(), crypt() md5() is used to calculate MD5 hash. The syntax is: string md5(string str); crypt() encrypts the string using the UNIX standard encryption DES module. Yes

##8. PHP5.3 language features_PHP tutorial

Introduction: PHP5.3 language features performance. Improved the overall performance of PHP 5.3 by 5 - 15% md5() is 10-15% faster Better stack implementation in the engine Constants moved to read-only memory Exception handling process improvement (simplified,

9. php function notes_PHP tutorial

Introduction: PHP function notes. String function: htmlspecialchars() md5() number_format() preg_match () trim() printf() str_replace() strip_tags() explode() implode() sprintf strpos strrchr strrpos strstr substr

10. php md5 encryption function reference detailed explanation_ PHP tutorial

Introduction: Detailed reference for php md5 encryption function. Many PHP developers will use this md() encryption function, but some friends may not know the reference. Today Let’s take a look at the parameters of the md5() function. Syntax md5(string,raw) md5() function

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