Recommended 10 articles for MD5 () function () function

The scenario for generating a unique ID is very common, such as temporary cache file names, temporary variables, temporary security codes, and so on, and the uniqid () function generates a unique ID based on the current time in microseconds. Because the generation of unique IDs is associated with microsecond time, the uniqueness of the IDs is very reliable. Generated unique ID The string returned by default has 13 strings long, if you do not define a prefix for a unique ID, you can return up to 23 string lengths, and if you combine the MD5 () function, the resulting unique ID will be more reliable, and this generated ID has the greatest advantage over the randomness of an ID that can be sorted. In particular, some values that need to be stored in the database. One, function prototype string uniqid ([string prefix [, bool more_entropy]) can define a unique ID prefix with length two, version compatible with PHP 3, PHP 4, PHP 53, function base usage and instance 1, generate a unique ID&L t;? Phpecho&am

1.10 content recommendations for the uniqid () function

Summary: Scenarios that generate unique IDs are common, such as temporary cache file names, temporary variables, temporary security codes, and so on, and the uniqid () function generates a unique ID based on the current time in microseconds. Because the generation of unique IDs is associated with microsecond time, the uniqueness of the IDs is very reliable. Generated unique ID The string returned by default has 13 strings long, if you do not define a unique ID prefix, you can return up to 23 strings long, if you combine the MD5 () function, the resulting unique ID will be more reliable, the resulting ID than the random ID of the greatest advantage is ...

2. Summary of definitions and usage of MD5 () functions in PHP

Introduction: PHP Cryptographic 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, MD5 's full name is Message-digest algorithm 5, which is the function of the different lengths of data information through a series of algorithms to calculate a 128-bit value, is to turn an arbitrary-length byte string into a long, large integer. Note that this is the "byte string", not the "string", because the transformation is only related to the value of the byte, with the character set or the encoding ...

3. PHP cryptographic function-md5 () function Encryption instance usage

Introduction: MD5 () function is the MD5 hash value of the calculator string, using MD5 algorithm, MD5 's full name is Message-digest algorithm 5, it is the role of different lengths of data information through a series of algorithms to calculate a 128-bit value, is to turn an arbitrary-length byte string into a long, large integer. Note that this is a "byte string", not a "string" because the transformation is only related to the value of the byte, not the character set or encoding.

4. PHP Object-oriented issues

Introduction: {Code ...} My question is: MD5 () function as shown above why do you get an error?? PHP Object-oriented properties can not be used in PHP's own method???

5. Vbscript.encode PHP encryption function Md5,crypt,base64_encode and other usage introduction

Introduction: Vbscript.encode:vbscript.encode PHP encryption function Md5,crypt,base64_encode, such as the use of: irreversible cryptographic functions are: MD5 (), Crypt () MD5 () to calculate MD5 ha. The syntax is: string MD5 (string str); Crypt () encrypts the string with the UNIX standard cryptographic DES module. This is a one-way cryptographic function that cannot be decrypted. To compare strings, place the first two characters of the encrypted string in the salt parameter, and then the encrypted string. Syntax is: string cry

6. PHP Encryption Technology

Introduction:: PHP encryption technology: A few days ago to learn some knowledge of PHP encryption, now summarize some of the PHP encryption form 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: The original string is optional (infrequently used

7. PHP encryption function Md5,crypt,base64_encode and other use introduction _php tutorial

Introduction: PHP encryption function Md5,crypt,base64_encode, such as the use of the introduction. The irreversible cryptographic functions are: MD5 (), Crypt () MD5 () to calculate MD5. The syntax is: string MD5 (string str); Crypt () encrypts the string with the UNIX standard cryptographic DES module. This is

8. PHP5.3 Language Features _php tutorials

Introduction: PHP5.3 language Features. Performance improvement PHP 5.3 Overall performance improved 5-15% MD5 () Fast Better stack implementation in the engine constants moved to Read-only memory exception process change In (Simplified,

9. php Function Note _php Tutorial

Introduction: PHP function notes. String functions: Htmlspecialchars () MD5 () Number_format () Preg_match () trim () printf () Str_replace () strip_tags () explode () Implode () sprintf strpos strrchr strrpos strstr substr

PHP MD5 Cryptographic Function Reference detailed _php tutorial

Introduction: PHP MD5 cryptographic function Reference detailed. Many PHP developers use this MD () cryptographic function, but some of the references may not be known, so let's take a look at the parameters of the MD5 () function today. Syntax MD5 (STRING,RAW) MD5 () function

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