added sample object and API file.

api/antibiotic.php

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+<?php
+
+class Diagnosis

api/database.php

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+<?php
+function getDatabase() {
+	// tells php that the database lives on the same server as the php file
+    //$dbhost = "localhost"; 
+    $dbhost = "develop.digitalmediauconn.org";
+
+	// this is the username
+    $dbuser = "abxrls"; 
+
+	// this is the password
+    $dbpass = "abxrls"; 
+
+	// name of the DB that we set up together
+    $dbname = "ccmc_antibiotics"; 
+
+    // this just makes a little config line for PHP to read
+    $mysql_conn_string = "mysql:host=$dbhost;dbname=$dbname"; 
+
+	//setup a new connection using the stuff up above
+    $database = new PDO($mysql_conn_string, $dbuser, $dbpass); 
+    $database->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+
+    return $database;
+}

api/diag_info.php

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+<?php
+
+require_once 'diagnosis.php';
+
+$diag_id = $_GET['id'];
+
+$diag = new Diagnosis($diag_id);
+
+echo "<pre>";
+print_r($diag->get());
+echo "</pre>";

api/diagnosis.php

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+<?php
+include 'database.php';
+class Diagnosis {
+
+	protected $id;
+	protected $name;
+	protected $notes;
+	protected $relatedAntibiotics;
+
+	public function __construct($id=0) {
+		if ($id !== 0) {
+			$db = getDatabase();
+			$query = $db->prepare( "SELECT * from diagnosis WHERE id = :id  " ); // return all fields (*) from the table WHERE the id is the var $id passed to the function
+			$query->bindParam( ':id', $id );
+			$query->execute(); // Run the SQL query on our database
+			$query->setFetchMode( PDO::FETCH_OBJ ); // A PHP method to tell the database we want to return all the data as objects with each table represented as a property of that object. This will be the case for most of our calls that return information from the database.  http://php.net/manual/en/pdo.constants.php
+			$data = $query->fetchAll();
+
+			$data = $data[0];
+
+			// Build our local object
+			$this->id = $data->id;
+			$this->name = $data->name;
+			$this->notes = $data->notes;
+			$this->buildRelatedAntibiotics();
+		}
+	}
+
+	private function buildRelatedAntibiotics () {
+			$db = getDatabase();
+			$query = $db->prepare( "SELECT * from diagnosis_antibiotic WHERE diagnosis_id = :id  " ); // return all fields (*) from the table WHERE the id is the var $id of current diagnosis
+			$query->bindParam( ':id', $this->id );
+			$query->execute(); // Run the SQL query on our database
+			$query->setFetchMode( PDO::FETCH_OBJ );
+			$data = $query->fetchAll();
+
+
+			$this->relatedAntibiotics = $data;
+	}
+
+	public function get () {
+		$res['id'] = $this->id;
+		$res['name'] = $this->name;
+		$res['notes'] = $this->notes;
+		$res['relatedAntibiotics'] = $this->relatedAntibiotics;
+
+		return $res;
+	}
+
+}