In php one can use filters with streams. Sometimes it can become handy. Let’s say you open a .csv file as a stream, but this file is tab separated. Your program can can process coma separated csvs, but not tab separated. This is a good use case for a stream filter, because it can make replacements…
Sometimes you need to export a large amount of data from your database. Obviously, if you are going to accumulate all data in an array and then write it to a csv file, you will eventually run out of memory. A better solution is to use streams. Here is how you can export data from…
A query below selects products that need to be updated in a remote application. It takes quantities of products in host application that are connected to source products application. On top of that it looks at all the orders that are in “Pending” status and reserves quantities for those products. SELECT products.quantity_available, connector_products.stock_id, products.id, connector_products.sku,…
$fp = fopen(‘https://www.example.com/pdfdoc’, ‘r’); $user = “sammy”; $pass = “password”; $ftp_server = “192.168.10.10”; //should be wrapped in try catch to properly handle errors $ftp_conn = ftp_ssl_connect($ftp_server); $login = ftp_login($ftp_conn, $user, $pass); ftp_chdir($ftp_conn, ‘path/to/folder’); //can also use ftp_pwd ftp_pasv($ftp_conn, true); //passive mode ftp_fput($ftp_conn, “mydocument.pdf”, $fp, FTP_BINARY); fclose($fp); ftp_close($ftp_conn); Above code can be used to upload a…
I always forget how to do this: find /var/www/html -type d -exec chmod 755 {} \; find /var/www/html -type f -exec chmod 644 {} \;
To get started let’s spin up an Ubuntu 16.4 LTS instance on AWS. After instance is up and running, we need to add port 80 to the instance’s security group inbound rules. There should be at least two ports open: 22, and 80. Now we can ssh into the instance and install Nginx, Node, and…
Having vagrant run on Windows host machine may cause some problems with symbolic links. After trying to make symbolic links to work and failing, I decided to use public disk in development and local disk in production. php artisan storage:link makes symbolic link from “public/storage” to “storage/app/public”. When developing on windows-vagrant this command will not work properly,…
This article covers installation of Jenkins on Ubuntu server and its usage to continuously integrate a Laravel application. Besides LAMP/LEMP stack we need to install Java, Git, Composer, and Node to successfully use Jenkins. Before starting to install this software, let’s take care of miscellaneous stuff. Miscellaneous (can skip this). Create mysql user and database….
Sometimes there is a need to access the authenticated user in your controller. If you do it in several methods in your controller, it makes sense to put the code in the constructor. Unfortunately, the code below will not work. This happens because the request is not injected into the controller at the time of…
When working on a php package it is inconvenient to push the package to github (or other repository) and then wait for the package to update using composer update. For package development, composer has such feature as path repositories. Let’s imagine we have a two folders on the same level: my-app and package. my-app is an app — a test…