Problem: Creating a helper function to simplify data manipulation using PDO prepared statements. The function should generate a SET statement for updating existing records and allow for easy insertion of new data.
Solution:
function dbSet($fields, &$values) { $set = ''; $values = array(); foreach ($fields as $field) { if (isset($_POST[$field])) { $set .= "`$field` = ?, "; $values[] = $_POST[$field]; } } return rtrim($set, ','); } $fields = explode(" ", "name surname lastname address zip fax phone date"); $_POST['date'] = $_POST['y'] . "-" . $_POST['m'] . "-" . $_POST['d']; $query = "UPDATE $table SET " . dbSet($fields, $values) . ", stamp=NOW() WHERE>
This function takes an array of field names and a reference to an array of values. It iterates through the field names, checking if a corresponding value exists in the POST data. If it does, it constructs a SET statement fragment. The reference to the values array allows the function to populate it with the appropriate values.
To use the function, first explode the field names into an array. Then call the function, passing the field array and the reference to an empty values array. The function returns a SET statement fragment. Finally, prepare the query and execute it with the values array.
Considerations:
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