Merge 2f1e798f54 into 2aee46f169

Update readme: fix grammatical error in java.md

README.md

@@ -95,6 +95,14 @@ Feel free to take a look. You might learn new things. They have been designed to
 - [Redis](databases/redis.sh)
   </details>
 
+#### Cheat Class
+<details>
+<summary>view cheatsheets</summary>
+
+  - [PDO](cheatclass/PDO.php)
+  
+</details>
+
 ### 🔧 Tools
 
 <details>

cheatclass/PDO.php

@@ -0,0 +1,88 @@
+<?php
+	/* 
+   *  PDO DATABASE CLASS
+   *  Connects Database Using PDO
+	 *  Creates Prepeared Statements
+	 * 	Binds params to values
+	 *  Returns rows and results
+	 *  credit: Traversy media
+   */
+class Database {
+	private $host = "localhost";
+	private $user = "DB_User";
+	private $pass = "DB_PASS";
+	private $dbname = "DB_NAME";
+	
+	private $dbh;
+	private $error;
+	private $stmt;
+	
+	public function __construct() {
+		// Set DSN
+		$dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
+		$options = array (
+			PDO::ATTR_PERSISTENT => true,
+			PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION 
+		);
+
+		// Create a new PDO instanace
+		try {
+			$this->dbh = new PDO ($dsn, $this->user, $this->pass, $options);
+		}		// Catch any errors
+		catch ( PDOException $e ) {
+			$this->error = $e->getMessage();
+		}
+	}
+	
+	// Prepare statement with query
+	public function query($query) {
+		$this->stmt = $this->dbh->prepare($query);
+	}
+	
+	// Bind values
+	public function bind($param, $value, $type = null) {
+		if (is_null ($type)) {
+			switch (true) {
+				case is_int ($value) :
+					$type = PDO::PARAM_INT;
+					break;
+				case is_bool ($value) :
+					$type = PDO::PARAM_BOOL;
+					break;
+				case is_null ($value) :
+					$type = PDO::PARAM_NULL;
+					break;
+				default :
+					$type = PDO::PARAM_STR;
+			}
+		}
+		$this->stmt->bindValue($param, $value, $type);
+	}
+	
+	// Execute the prepared statement
+	public function execute(){
+		return $this->stmt->execute();
+	}
+	
+	// Get result set as Associative array
+	public function resultset(){
+		$this->execute();
+		return $this->stmt->fetchAll(PDO::FETCH_ASSOC);
+	}
+	
+	// Get single record as object
+	public function single(){
+		$this->execute();
+		return $this->stmt->fetch(PDO::FETCH_OBJ);
+	}
+	
+	// Get record row count
+	public function rowCount(){
+		return $this->stmt->rowCount();
+	}
+	
+	// Returns the last inserted ID
+	public function lastInsertId(){
+		return $this->dbh->lastInsertId();
+	}
+}

languages/java.md

@@ -286,7 +286,7 @@ for(dataType item : array) {
 
 ### ACCESS MODIFIERS
 
-1. defualt(No keyword required)
+1. default(No keyword required)
 2. private
 3. public
 4. protected