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Marcello 2023-10-20 18:22:46 +02:00
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12
docs/languages/php/database.md
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@ -8,7 +8,7 @@ PDO is the PHP extension for database access through a single API. It supports v
### Database Connection
```php
```php linenums="1"
$dsn = "mysql:dbname=<dbname>;host=<ip>";
$user="<db_user>";
$password="<db_password>";
@ -25,7 +25,7 @@ try {
To execute a query it's necessary to "prepare it" with *parameters*.
```php
```php linenums="1"
# literal string with markers
$sql = 'SELECT fields
FROM tables
@ -44,7 +44,7 @@ $result = $stmt->fetchAll(PDO::FETCH_CLASS, ClassName::class); # result as obje
### Parameter Binding
```php
```php linenums="1"
# bindValue
$stmt = pdo->prepare(sql);
$stmt->bindValue(':marker', value, PDO::PARAM_<type>);
@ -64,7 +64,7 @@ Its possible to disable this behaviour setting `PDO::ATTR_STRINGIFY_FETCHES` and
> **Note**: `FETCH_OBJ` abd `FETCH_CLASS` return classes and don't have this behaviour.
```php
```php linenums="1"
pdo->setAttribute()
$pdo->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
@ -77,7 +77,7 @@ $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
### PDO Debug
```php
```php linenums="1"
$stmt = $pdo->prepare($sql);
$stmt->execute([':marker' => value]);
$result = $stmt->fetchAll(PDO::FETCH_ASSOC);
@ -87,7 +87,7 @@ $stmt->debugDumpParams(); # print the SQL query that has been sent to the datab
## [SQLite3](https://www.php.net/manual/en/book.sqlite3.php)
```php
```php linenums="1"
$db = SQLite3("db_file.sqlite3"); // connection
$stmt = $db->prepare("SELECT fields FROM tables WHERE field <operator> :marker"); // prepare query