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PHP/MySQL (PDO Database) method with named parameters
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<?php | |
/* | |
PHP/MySQL (PDO) method with named parameters | |
--------------------------------------------- | |
https://gist.github.com/luckyshot/9477105 | |
Last updated: 12 Sep 17 | |
$config = [ | |
'mysql' => [ | |
'database' => 'database', | |
'user' => 'root', | |
'pass' => 'root' | |
], | |
]; | |
$db = new DB( | |
$config['mysql']['user'], | |
$config['mysql']['pass'], | |
$config['mysql']['database'] | |
); | |
$select = $db->query("SELECT * FROM items WHERE id = :id") | |
->bind(':id', $id) | |
->select(); | |
$single = $db->query("SELECT * FROM items WHERE id = :id LIMIT 1") | |
->bind(':id', $id) | |
->single(); | |
// Returns the inserted ID | |
$insert = $db->query("INSERT INTO items SET | |
aaa = :aaa, | |
bbb = :bbb | |
") | |
->bind(':aaa', $aaa ) | |
->bind(':bbb', $bbb ) | |
->insert(); | |
$update = $db->query("UPDATE items SET | |
aaa = :aaa | |
WHERE id = :id; | |
") | |
->bind(':aaa', $aaa ) | |
->bind(':id', $data['id']) | |
->execute(); | |
$delete = $db->query("DELETE FROM items | |
WHERE id = :id | |
LIMIT 1; | |
") | |
->bind(':id', $data['id']) | |
->execute(); | |
DEBUG: | |
echo "<pre>";var_export( $this->db->queries );echo "</pre>"; | |
*/ | |
class DB { | |
private $dbh; | |
private $stmt; | |
private $q; | |
public $queries = []; | |
public function __construct($user, $pass, $dbname) { | |
$this->dbh = new PDO( | |
"mysql:host=127.0.0.1;dbname=$dbname", | |
$user, | |
$pass, | |
array( PDO::ATTR_PERSISTENT => true ) | |
); | |
$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); | |
$this->query("SET NAMES 'utf8';"); | |
$this->execute(); | |
} | |
public function query($query) { | |
$this->queries[] = $query; | |
$this->stmt = $this->dbh->prepare($query); | |
return $this; | |
} | |
public function bind($pos, $value, $type = null) { | |
if ( is_numeric( $value ) ){ $this->queries[ count($this->queries)-1 ] = str_replace( $pos, $value, $this->queries[ count($this->queries)-1 ] ); } | |
else{ $this->queries[ count($this->queries)-1 ] = str_replace( $pos, '"' . $value . '"', $this->queries[ count($this->queries)-1 ] ); } | |
if ( is_null($type) ) { | |
switch( true ) { | |
case is_int($value): | |
$type = PDO::PARAM_INT; | |
break; | |
case is_bool($value): | |
$type = PDO::PARAM_BOOL; | |
break; | |
case is_null($value): | |
$type = PDO::PARAM_NULL; | |
break; | |
default: | |
$type = PDO::PARAM_STR; | |
} | |
} | |
$this->stmt->bindValue($pos, $value, $type); | |
return $this; | |
} | |
public function execute() { | |
try{ | |
$result = $this->stmt->execute(); | |
}catch(PDOException $e){ | |
echo '<pre>'; | |
var_export( $e ); | |
var_export( $this->dbh->errorInfo() ); | |
var_export( $this->queries ); | |
} | |
return $result; | |
} | |
public function update() { | |
return $this->execute(); | |
} | |
public function delete() { | |
return $this->execute(); | |
} | |
// Same as execute() but returns ID | |
public function insert() { | |
$this->execute(); | |
return $this->dbh->lastInsertId(); | |
} | |
public function select( $fetch_style = null ) { | |
$this->execute(); | |
return $this->stmt->fetchAll( PDO::FETCH_ASSOC ); | |
} | |
public function single( $fetch_style = null ) { | |
$this->execute(); | |
return $this->stmt->fetch( PDO::FETCH_ASSOC ); | |
} | |
} |
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