FleaPHP security settings method_PHP tutorial
Prerequisites:
Virtual machine, the fleaphp folder cannot be placed in a path that is inaccessible to http, and the configuration files of apache and php cannot be modified.
fleaphp uses default configuration
Method:
1. Place the controller folder outside the root directory (this method is only suitable if you have a server)
2. In the controller file, try not to explicitly output such as echo print, etc.
3. To hide the controller directory, take a folder with a similar password: sdfsdf12312SDCVd/Flea
4. Change the default CMT directory name through the configuration file
5. Place an .htaccess under the root directory to prohibit access to certain directories. (Only suitable for apache server)
6 When no configuration file can be modified, except index.php, all MVC layer files must be preceded by
defined('APP_DIR') or header("HTTP/ 1.0 404 Not Found"); and it is best to change 'APP_DIR' to a name that is difficult to guess
7. Placing an empty index.htm file in the directory is also one of the ways to prevent directory leakage.
8.
function FLEA_Exception($message = null, $code = 0)
{
$this->message = $message;
$this->code = $code;
$this->trac = debug_backtrace();
// Get the file and code line number where the exception was thrown
$last = array_shift($this->trac );
$this->file = $last['file'];
$this->line = $last['line'];
}
This is a FLEA processing exception The constructor of class FLEA_Exception. My personal idea is that you can change it when the program hangs up
// Get the file and code line number where the exception was thrown
$last = array_shift($this->trac);
$this->file = $last['file'];
$this->line = $last['line'];
this part

Calculating the total number of elements in a PHP multidimensional array can be done using recursive or iterative methods. 1. The recursive method counts by traversing the array and recursively processing nested arrays. 2. The iterative method uses the stack to simulate recursion to avoid depth problems. 3. The array_walk_recursive function can also be implemented, but it requires manual counting.

In PHP, the characteristic of a do-while loop is to ensure that the loop body is executed at least once, and then decide whether to continue the loop based on the conditions. 1) It executes the loop body before conditional checking, suitable for scenarios where operations need to be performed at least once, such as user input verification and menu systems. 2) However, the syntax of the do-while loop can cause confusion among newbies and may add unnecessary performance overhead.

Efficient hashing strings in PHP can use the following methods: 1. Use the md5 function for fast hashing, but is not suitable for password storage. 2. Use the sha256 function to improve security. 3. Use the password_hash function to process passwords to provide the highest security and convenience.

Implementing an array sliding window in PHP can be done by functions slideWindow and slideWindowAverage. 1. Use the slideWindow function to split an array into a fixed-size subarray. 2. Use the slideWindowAverage function to calculate the average value in each window. 3. For real-time data streams, asynchronous processing and outlier detection can be used using ReactPHP.

The __clone method in PHP is used to perform custom operations when object cloning. When cloning an object using the clone keyword, if the object has a __clone method, the method will be automatically called, allowing customized processing during the cloning process, such as resetting the reference type attribute to ensure the independence of the cloned object.

In PHP, goto statements are used to unconditionally jump to specific tags in the program. 1) It can simplify the processing of complex nested loops or conditional statements, but 2) Using goto may make the code difficult to understand and maintain, and 3) It is recommended to give priority to the use of structured control statements. Overall, goto should be used with caution and best practices are followed to ensure the readability and maintainability of the code.

In PHP, data statistics can be achieved by using built-in functions, custom functions, and third-party libraries. 1) Use built-in functions such as array_sum() and count() to perform basic statistics. 2) Write custom functions to calculate complex statistics such as medians. 3) Use the PHP-ML library to perform advanced statistical analysis. Through these methods, data statistics can be performed efficiently.

Yes, anonymous functions in PHP refer to functions without names. They can be passed as parameters to other functions and as return values of functions, making the code more flexible and efficient. When using anonymous functions, you need to pay attention to scope and performance issues.


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