Recommended articles about string function crc32()

PHP Learning Series (1) - String processing function (3), PHP function 11, crc32() function calculates the crc32 polynomial of a string. Generates a 32-bit cyclic redundancy check code polynomial for the string parameter. This function can be used to verify data integrity. Syntax: crc32(string) Note: Since PHP's integers are signed, many crc32 check codes will return negative integers, so you need to use sprintf() or printf()'s "%u" formatter to get the character representing the unsigned crc32 check code string. Example 1 In this example, we will print the result of crc32() with and without the "%u" formatter (note that the result is the same): Output: Without %u: 461707669 With %u: 461707669 Example 2 In this example, we will output the results of crc32() with and without the "%u" formatter (note that the results are different): Output:

1. PHP learning series (1) - string processing function (3), php function_PHP tutorial

Introduction: PHP learning series (1) - string processing functions (3), php functions. PHP learning series (1) - String processing function (3), PHP function 11. The crc32() function calculates the crc32 polynomial of a string. Generate a 32-bit cyclic redundancy check code for the string parameter

2. Find the CRC-16 code in PHP, use it! How to solve

#Introduction: Please download the CRC-16 code in php, urgently needed! ! ! To send data to the device, you need the 16-bit check code of crc. After google for a long time, I didn't find any crc16 code written in Php. PHP comes with the crc32() function, which can only generate 32-bit check codes, but I need a 16-bit check code because the device only recognizes 16-bit check codes. The environment is UBUNTU+APACHE2+PHP5+MYSQL5+ADODB. If there are CRC 16 algorithms written in other languages, compare

3. Solve the application scenarios of the crc32() function

Introduction: Solving the application scenarios of the crc32() function Solving the application scenarios of the crc32() function. After reading the manual, I was very confused. I don’t know what this function is used for. Please solve it. The best solution that can give you an application scenario------Manual description: Generate a 32-bit cyclic redundancy check code for str polynomial. This is typically used to check whether the transmitted data is complete.

4. Solve the application scenarios of crc32() function

Introduction: Solve the application scenarios of crc32() function Solve the application scenarios of the crc32() function. After reading the manual, I was very confused. I don’t know what this function is used for. Please solve it. The best solution that can give you an application scenario------Manual description: Generate a 32-bit cyclic redundancy check code for str polynomial. This is typically used to check whether the transmitted data is complete.

5. Please download the CRC-16 code in php, use it! How to solve

#Introduction: Please download the CRC-16 code in php, urgently needed! ! ! To send data to the device, you need the 16-bit check code of crc. After google for a long time, I didn't find any crc16 code written in Php. PHP comes with the crc32() function, which can only generate 32-bit check codes, but I need a 16-bit check code because the device only recognizes 16-bit check codes. The environment is UBUNTU+APACHE2+PHP5+MYSQL5+ADODB. If there are CRC 16 algorithms written in other languages, compare

6. PHP Learning Series (1) String Processing Function (3), PHP function

Introduction: PHP learning series (1) - String processing function (3), PHP function. PHP learning series (1) - String processing function (3), PHP function 11. The crc32() function calculates the crc32 polynomial of a string. Generate a 32-bit cyclic redundancy check code for the string parameter

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