simplified automatic PDO INSERT SQL time saver ⌛ by @Rami_jamleh; with revision by @Clair_Shaw

prepare & execute PDO SQL INSERT with placeholders

<?php
/**
 * @Rami jamleh - http://php.net/manual/en/pdostatement.execute.php#111823
 * @Clair_Shaw(Revision) - http://php.net/manual/en/pdostatement.execute.php#116901
 * simplified $placeholder form
 **/
$data = ['a'=>'foo','b'=>'bar'];
$keys = array_keys($data);
$fields = '`'.implode('`, `',$keys).'`';
//$placeholder = substr(str_repeat('?,',count($keys),0,-1));
$placeholder = substr(str_repeat('?,',count($keys)),0,-1);
$pdo->prepare("INSERT INTO `baz`($fields) VALUES($placeholder)")->execute(array_values($data));