PDO & Prepared Statements Snippets

pdocrash.php

<?php
  $host =  'localhost';
  $user = 'root';
  $password = '123456';
  $dbname = 'pdoposts';

  // Set DSN
  $dsn = 'mysql:host='. $host .';dbname='. $dbname;

  // Create a PDO instance
  $pdo = new PDO($dsn, $user, $password);
  $pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);
  $pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

  # PRDO QUERY

  // $stmt = $pdo->query('SELECT * FROM posts');

  // while($row = $stmt->fetch(PDO::FETCH_ASSOC)){
  //   echo $row['title'] . '<br>';
  // }

  // while($row = $stmt->fetch()){
  //   echo $row->title . '<br>';
  // }

  # PREPARED STATEMENTS (prepare & execute)

  // UNSAFE
  //$sql = "SELECT * FROM posts WHERE author = '$author'";

  // FETCH MULTIPLE POSTS

  // User Input
  $author = 'Brad';
  $is_published = true;
  $id = 1;
  $limit = 1;

  // Positional Params
  $sql = 'SELECT * FROM posts WHERE author = ? && is_published = ? LIMIT ?';
  $stmt = $pdo->prepare($sql);
  $stmt->execute([$author, $is_published, $limit]);
  $posts = $stmt->fetchAll();

  // Named Params
  // $sql = 'SELECT * FROM posts WHERE author = :author && is_published = :is_published';
  // $stmt = $pdo->prepare($sql);
  // $stmt->execute(['author' => $author, 'is_published' => $is_published]);
  // $posts = $stmt->fetchAll();

  // //var_dump($posts);
  foreach($posts as $post){
    echo $post->title . '<br>';
  }

  // FETCH SINGLE POST

  // $sql = 'SELECT * FROM posts WHERE id = :id';
  // $stmt = $pdo->prepare($sql);
  // $stmt->execute(['id' => $id]);
  // $post = $stmt->fetch();

  // echo $post->body;

  // GET ROW COUNT
  // $stmt = $pdo->prepare('SELECT * FROM POSTS WHERE author = ?');
  // $stmt->execute([$author]);
  // $postCount = $stmt->rowCount();

  // echo $postCount;

  // INSERT DATA
  // $title = 'Post Five';
  // $body = 'This is post five';
  // $author = 'Kevin';

  // $sql = 'INSERT INTO posts(title, body, author) VALUES(:title, :body, :author)';
  // $stmt = $pdo->prepare($sql);
  // $stmt->execute(['title' => $title, 'body' => $body, 'author' => $author]);
  // echo 'Post Added';

  // UPDATE DATA
  // $id = 1;
  // $body = 'This is the updated post';

  // $sql = 'UPDATE posts SET body = :body WHERE id = :id';
  // $stmt = $pdo->prepare($sql);
  // $stmt->execute(['body' => $body, 'id' => $id]);
  // echo 'Post Updated';

  // DELETE DATA
  // $id = 3;

  // $sql = 'DELETE FROM posts WHERE id = :id';
  // $stmt = $pdo->prepare($sql);
  // $stmt->execute(['id' => $id]);
  // echo 'Post Deleted';

  // SEARCH DATA
  // $search = "%f%";
  // $sql = 'SELECT * FROM posts WHERE title LIKE ?';
  // $stmt = $pdo->prepare($sql);
  // $stmt->execute([$search]);
  // $posts = $stmt->fetchAll();

  // foreach($posts as $post){
  //   echo $post->title . '<br>';
  // }
  

Thank you so much...

I learned a lot from this. Thank you very much.

so so love you sir....thna you very much

Thank you for this.

Thank you Brad

Here's the code for anyone wanting to create the table. I've chosen the table name as posts

CREATE TABLE `posts` (
  `id` int(11) NOT NULL,
  `title` varchar(255) NOT NULL,
  `body` text NOT NULL,
  `author` varchar(255) NOT NULL,
  `is_published` tinyint(1) NOT NULL DEFAULT 1,
  `created_at` datetime NOT NULL DEFAULT current_timestamp()
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

ALTER TABLE `posts`
  ADD PRIMARY KEY (`id`);

ALTER TABLE `posts`
  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
COMMIT;

Thanks Brad

Thanks a lot, Brad. Much appreciated !!

Thanks a lot! Very helpful :)

it's really helpful man, thanks a lot

Thanks, it's great 👍

Thanks a lot for this and all your content! Really helpful! Very much appreciated 💯

Thank Brad,
I think PDO was hard to understand and working with but its lot more easy.
Thanks for Awesome tutorials.

Thank Brad :***

Fucking Brilliant BRO!

Thank you! Very good explanation! :)

Thank you Brad!

Thanks Brad, great and simple code

Thank you Brad

Thank you ❤️

SO HELPFUL!
THANKS