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include/vendor/seinopsys/postgresql-database-class/README.md

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+# PostgresDb [![Build Status](https://travis-ci.org/SeinopSys/PHP-PostgreSQL-Database-Class.svg)](https://travis-ci.org/SeinopSys/PHP-PostgreSQL-Database-Class) [![Latest Stable Version](https://poser.pugx.org/seinopsys/postgresql-database-class/v/stable)](https://packagist.org/packages/seinopsys/postgresql-database-class) [![Total Downloads](https://poser.pugx.org/seinopsys/postgresql-database-class/downloads)](https://packagist.org/packages/seinopsys/postgresql-database-class) [![License](https://poser.pugx.org/seinopsys/postgresql-database-class/license)](https://packagist.org/packages/seinopsys/postgresql-database-class)
+
+This project is a PostgreSQL version of [ThingEngineer](https://github.com/ThingEngineer)'s [MysqliDb Class](https://github.com/ThingEngineer/PHP-MySQLi-Database-Class), that supports the basic functionality and syntax provided by said class, tailored specifically to PostgreSQL.
+
+## Installation
+
+This class requires PHP 5.4+ or 7+ to work. You can either place the `src/PostgresDb.php` in your project and require/include it, or use [Composer](https://getcomposer.org) (strongly recommended)
+
+    composer require seinopsys/postgresql-database-class:^3.0
+
+## Usage
+
+```php
+$db = new \SeinopSys\PostgresDb($database_name, $host, $username, $password);
+```
+
+For a more in-depth guide see [USAGE.md](USAGE.md)
+
+## Upgrading from `2.x`
+
+ 1. **Removed deprecated methods**
+  
+    These methods were deprecated in version `2.x` and have been removed in `3.x`. Use the renamed variants as indicated below:
+     
+     | `2.x` | `3.x` |
+     |-------|-------|
+     |`$db->rawQuery(…);`|`$db->query(…);`|
+     |`$db->rawQuerySingle(…);`|`$db->querySingle(…);`|
+     |`$db->pdo();`|`$db->getConnection();`|
+    
+ 2. **Namespace change**
+  
+    As of `3.x` - to comply fully with the PSR-2 coding standard - the class now resides in the `SeinopSys` namespace. Here's a handy table to show what you need to change and how:
+     
+     | `2.x` | `3.x` |
+     |-------|-------|
+     |`$db = new PostgresDb(…);`|`$db = new \SeinopSys\PostgresDb(…);`|
+     |`$db = new \PostgresDb(…);`|`$db = new \SeinopSys\PostgresDb(…);`|
+     |<pre>use \PostgresDb;<br><br>$db = new PostgresDb(…);</pre>|<pre>use \SeinopSys\PostgresDb;<br><br>$db = new PostgresDb(…);</pre>|
+
+ 3. **Internal code structure changes**
+ 
+    As of `3.x` all `private`/`protected` methods and properties have dropped the `_` prefix, so be sure to update your wrapper class (if you use one).