Java Script Objects

JavaScript objects are also datatypes. Just like int, string but the difference here is objects can contain properties and variables both. Properties can be of JSON data type or in the form of key-value pairs. Objects are stored in the heap memory compared to other data types which are stored in stack memory

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Code for Mail in PHP

PHP mail function and mail configuration in XAMPP and sending mail is done from sendmail through localhost. I hope it will help you. mail() function <? php $to = 'dubeynitish22@hotmail.com' ; $subject = 'Test' ; $message = 'Hello' ; $headers = 'From: webmaster@example.com' . "\r\n" . 'Reply-To: webmaster@example.com' . "\r\n" . 'X-Mailer: PHP/' . phpversion (); if (! mail ( $to , $subject , $message , $headers )){ echo "Error !!" ; } else { echo "Email Sent !!" ; } ?> 2. php.ini configuration (For SEND-MAIL) [ mail function ] ; For Win32 only . ; http : //php.net/smtp ; SMTP = localhost ; http : //php.net/smtp-port ; smtp_port = 25 ; For Win32 only . ; http : //php.net/sendmail-from ; sendmail_from = me@example . com ; For Unix only . You may supply arguments as well ( default : "sendmail -t -i&q

PHP code for finding distinct elements common to all rows of a matrix in O(n) time complexity

<?php class Matrix{ /** •@param 2D array $matrix • •Prints distinct elements common to all rows of the matrix */ public static function getDistinctElementsCommonToAllRows($matrix){ // A hash map to store count of elements $hashmap = array(); $selectedHash = array(); $rows = count($matrix); $cols = count($matrix[0]); for ($i = 0; $i < $rows; $i++) { // Increment the count of first // element of the row if(array_key_exists($matrix[$i][0],$hashmap)){ $hashmap[$matrix[$i][0]] = $i+1; } // Starting from the second element // of the current row for ($j = 1; $j < $cols; $j++) { // If current ele

PHP code for Implementing LRU cache.

<?php interface LRUCache{ /** •@param string $key •@param string $value •@return bool $result • •Stores value against the key in the cache */ public function insertIntoCache($key,$value); /** •@param string $key •@return string $value •Gets the value of a key from the cache */ public function getFromCache($key); /** Purge the entire cache */ public function purgeCache(); /** •@return int $count •Gets the number of successful cache hits so far */ public function allCacheHits(); /** •@return int $count •Gets the number of unsuccessful cache hits so far **/ public function allCacheMissed(); } class Cache implements LRUCache{ // int the max number of elements the cache supports private $capacity; // Array representing a naive hashmap (TODO needs to pass t

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