/PHP/Php pdo check if record exists before insert

Php pdo check if record exists before insert

$sql = $dbh->prepare("SELECT COUNT(*) AS `total` FROM directory WHERE telephone = :phone");
$sql->execute(array(':phone' => $telephone));
$result = $sql->fetchObject();

if ($result->total > 0) 
{
    echo 'The telephone number: ' . $telephone. ' is already in the database<br />';
}
else 
{
      echo 'No rows matched the query.';
}

Source: stackoverflow.com

Php pdo check if record exists before insert

ALTER TABLE `requests` ADD UNIQUE `imdbid_unique`(`imdbid`);

Source: stackoverflow.com

Pdo insert or update if exists

REPLACE INTO ***** SET name = ?, slideView = ?, company = ?

Source: stackoverflow.com

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