Merge pull request #64 from iazaran/export_to_csv

Export to csv

Author: iazaran

README.md

@@ -71,6 +71,8 @@ Register an event listener and trigger it when needed
 Run R script (if you have R installed)
 - **HttpClient::cURL(...)**
 Run cURL script to send a request
+- **CsvGenerator::exportCSV(...)**
+Export a specific table from DB to a CSV file
 
 #### Run Web App:
 - Install docker and docker-compose if needed

composer.lock

@@ -0,0 +1 @@
+Enable to make it directly with Docker

public/assets/storage/file.txt

@@ -0,0 +1,41 @@
+<?php
+
+namespace App;
+
+/**
+ * Class CsvGenerator
+ * @package App
+ */
+class CsvGenerator
+{
+    /**
+     * Create a CSV file from a specific table on DB
+     *
+     * @param string $tableName
+     * @return bool|void
+     */
+    public static function exportCSV(string $tableName)
+    {
+        $path = $_SERVER['DOCUMENT_ROOT'] . '/assets/storage/' . $tableName . '.csv';
+        $file = fopen($path, 'w') or die('Unable to write into file!');
+
+        $sql = "DESCRIBE $tableName";
+        Database::query($sql);
+        Database::execute();
+
+        $header = Database::fetchColumn();
+
+        fputcsv($file, $header);
+
+        $sql = "SELECT * FROM $tableName";
+        Database::query($sql);
+        Database::execute();
+
+        $rows = Database::fetchAll();
+        foreach ($rows as $row) {
+            fputcsv($file, $row);
+        }
+
+        return true;
+    }
+}

src/App/CsvGenerator.php

@@ -125,6 +125,22 @@ public static function fetchAll(): array|bool
         return self::$stmt->fetchAll(PDO::FETCH_ASSOC);
     }
 
+    /**
+     * Get column names as array
+     *
+     * @return array|bool
+     */
+    public static function fetchColumn(): array|bool
+    {
+        try {
+            self::$stmt->execute();
+        } catch (PDOException $exception) {
+            echo 'PDO Error: ' . $exception->getMessage();
+        }
+
+        return self::$stmt->fetchAll(PDO::FETCH_COLUMN);
+    }
+
     /**
      * Get single record as array
      *