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Hypertext Preprocessor Basics

PHP Basics
Hypertext Preprocessor Basics : PHP Stands for  Hypertext Preprocessor. PHP is an HTML - embedded  scripting language.PHP is a server side scripting language. 

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Collection Shell Commands in MongoDB

Create Collection  Syntax: db.createCollection("Collection Name"); Example: db.createCollection("users"); Delete collection in Mongodb Shell Command db.collection.drop()  Find Collection in Mongodb Shell Command db.collection.find() Show all Collection in Mongodb Shell Command show collections Creat Collection in Mongodb Shell Command db.createCollection("users") Rename the Collection In Mongodb Shell Command db.collection.renameCollection()   Update the single document in MongoDB collections Shell Command db.collection.updateOne()  Updates all the documents in MongoDB collections that match the given query.  db.collection.updateMany() Replaces the first matching document in MongoDB collection db.collection.replaceOne()  Deletes the first document in Mongodb collection db.collection.deleteOne()  db.collection.deleteMany()
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find visitor location php

<?php function geoCheckIP($ip)   {   //check, if the provided ip is valid   if(!filter_var($ip, FILTER_VALIDATE_IP))   {   throw new InvalidArgumentException("IP is not valid");   }   //contact ip-server   $response=@file_get_contents('http://www.netip.de/search?query='.$ip);   if (empty($response))   {   throw new InvalidArgumentException("Error contacting Geo-IP-Server");   }   //Array containing all regex-patterns necessary to extract ip-geoinfo from page   $patterns=array();   $patterns["domain"] = '#Domain: (.*?)&nbsp;#i';   $patterns["country"] = '#Country: (.*?)&nbsp;#i';   $patterns["state"] = '#State/Region: (.*?)<br#i';   $patterns["town"] = '#City: (.*?)<br#i';   //Array where results will be stored   $ipInfo=array();   // &nbsp;   //check response from ipserver for above patterns   foreach ($pa...
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