ktyr report

PHPでSQLite3 #6データ削除(DELETE)

$sql="DELETE FROM $tableName WHERE id = $id";
$result=$db->query($sql);

PHPでSQLite3 #5データ更新(UPDATE)

$sql="SELECT id,cnt FROM $tableName WHERE id='{$id}'";
$result=$db->query($sql);
$row = $result->fetchArray();
$id=$row['id'];
$cnt=$row['cnt']+1;

$sql="UPDATE $tableName SET cnt = $cnt WHERE id = $id";
$result=$db->query($sql);

PHPでSQLite3 #4データ挿入(INSERT)

$sql="INSERT INTO $tableName(name,title,cnt) VALUES('{$name}','{$title}',1)";
$result=$db->query($sql);

PHPでSQLite3 #3データ取得(SELECT)

$tableName="access";
$sql="SELECT id,name,cnt FROM $tableName WHERE name='{$name}' ORDER BY cnt ASC";
$result=$db->query($sql);
$tmp=[];
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
	$tmp[]=$row;
}
echo json_encode($tmp);
$db->close();

データ重複しないように取得

$sql="SELECT DISTINCT name FROM $tableName";
$result=$db->query($sql);
if($result===FALSE){
	$db->close();
	echo $message;
	exit;
}
$tmp=[];
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
	$value=$row['name'];
	$tmp[]=$value;
}
echo json_encode($tmp);

PHPでSQLite3 #2テーブル作成

$tableName="access";
$sql="create table if not exists $tableName (id INTEGER PRIMARY KEY AUTOINCREMENT, name varchar(6), title text, cnt int)";
$result=$db->query($sql);
if ($result===FALSE) {
	$db->close();
	echo $message;
	exit;
}
$db->close();

substr

$str='abcd';
echo substr($str,1,2);

結果

bc

$str='abcd';
echo substr($str,0,-1);

結果

abc

$str='abcd';
echo substr($str,-1);

結果

d

PHPでSQLite3 #1接続

try {
	$db = new SQLite3('test.db');
} catch (Exception $e) {
	echo $message;
	exit;
}

UINavigationControllerの戻るボタンの文字を変える
self.navigationController pushViewControllerの直前に

UIBarButtonItem *backButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"戻る" style:UIBarButtonItemStyleBordered target:nil action:nil];
self.navigationItem.backBarButtonItem=backButtonItem;

UINavigationControllerのタイトルを設定
これではだめ

self.navigationController.title=@"TheTitle";

こうする

self.navigationItem.title=@"TheTitle";

UIColorからRGBA値を取得

float r,g,b,alpha;
[backgroundColor getRed:&r green:&g blue:&b alpha:&alpha];

値は0.0〜1.0