Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Yes, it can be done using the unlink function. It has been shown below −Another alternative that deletes the script irrespective of whether the exit function is called or not, has been shown below ^minus;class DeleteOnExit { function __destruct() { unlink(__FILE__); } } $delete_on_exit = new DeleteOnExit();
The below code can be used to parse JSON array −Example Live Demo
Regular expression$directory = new RecursiveDirectoryIterator(__DIR__); $flattened = new RecursiveIteratorIterator($directory); // Make sure the path does not contain "/.Trash*" folders and ends eith a .php or .html file $files = new RegexIterator($flattened, '#^(?:[A-Z]:)?(?:/(?!\.Trash)[^/]+)+/[^/]+\.(?:php|html)$#Di'); foreach($files as $file) { echo $file . PHP_EOL; }Using filtersA base class holds the regex that needs to be used with the filter.classes which will extend this one. The RecursiveRegexIterator is extended.abstract class FilesystemRegexFilter extends RecursiveRegexIterator { protected $regex; public function __construct(RecursiveIterator $it, $regex) { $this->regex = $regex; parent::__construct($it, $regex); } }They are basic filters and work ... Read More
The date function can be used to return the string formatted based on the format specified by providing the integer timestamp or the current time if no timestamp is givenThe timestamp is optional and defaults to the value of time().Example Live Demoif(date('j', $timestamp) === '1') echo "It is the first day of the month today"; if(date('D', $timestamp) === 'Mon') echo "It is Monday today";OutputThis will produce the following output −It is the first day of the month today
JSON structure can be created with the below code −$json = json_encode(array( "client" => array( "build" => "1.0", "name" => "xxxx", "version" => "1.0" ), "protocolVersion" => 4, "data" => array( "distributorId" => "xxxx", "distributorPin" => "xxxx", "locale" => "en-US" ) ));
HTML in PHPecho "Link";orecho "Link";PHP in HTML
The usort function can be used to sort a multidimensional array. It sorts with the help of a user defined function.Below is a sample code demonstration −Examplefunction compare_array($var_1, $var_2) { if ($var_1["price"] == $var_2["price"]) { return 0; } return ($var_1["price"] < $var_2["price"]) ? -1 : 1; } usort($my_Array,"compare_array") $var_1 = 2 $var_2 = 0OutputThis will produce the following output −1Explanation − We have declared var_1 and var)2 with integer values. They are compared and the result is returned.
To get the list of files in a directory, use the SearchOptions.AllDirectories in C#.Firstly, set the directory for which you want the files −string[] myFiles = Directory.GetFiles("D:\New\", "*.*", SearchOption.AllDirectories);The following is an example displaying files from the above mentioned directory −Exampleusing System; using System.Linq; using System.IO; class Program { static void Main() { string[] myFiles = Directory.GetFiles("D:\New\", "*.*", SearchOption.AllDirectories); foreach (string res in myFiles) { Console.WriteLine(res); } } }OutputThe following is the output. It lists all the directories of the folder −D:\New\one.txt D:\New\two.html D:\Newature.png
FileInfo type has a Length property that determines how many bytes a file has.Firstly, set the file −FileInfo file = new FileInfo("D:ew");Now use the Length property −file.LengthHere is the complete code −Exampleusing System; using System.Linq; using System.IO; class Program { static void Main() { FileInfo file = new FileInfo("D:ew"); long res = file.Length; Console.WriteLine("Bytes: "+res); } }OutputThe following is the output −3259244
Java 9 has introduced JShell for Java, and it allows us to evaluate code snippets such as declarations, statements, and expressions.During the JShell session, we need to reset it without closing and re-opening JShell then we can use the internal command: "/reset". By using this command, code entered during the current session has erased. It can be useful when we want to test new classes, create new variables, etc. while keeping the names previously used.In the below snippet, we have created variables x, y, and str. We can able to see all entered code snippets using the "/list" command. After that, we can apply ... Read More