echo "0 is null;"; }else{ echo "0 is not null;"; } if(is_numeric($a)){ echo "0 is numeric;"; }else{ echo "0 is not numeric;"; } if(is_string($a)){ echo "0 is string;"; }else{ echo "0 is not string;"; } if(!$a){ echo "0 is false;"; }else{ echo "0 ...
}if(strval($a) == ''){echo"strval(null) == '';"; }else{echo"strval(null) != '';"; }if(intval($a) == 0){echo"intval(null) == 0;"; }else{echo"intval(null) != 0;"; }if(empty($a)){echo"null is empty;"; }else{echo"null is not empty;"; }if(is_numeric($a))...
Route::get('/', function () { Log::info("Get /"); $startTime = microtime(true); // Simple cache-aside logic if (Cache::has('tasks')) { $data = Cache::get('tasks'); } else { $data = Task::orderBy('created_at', 'asc')->get(); Cache::add('tasks', $data); } retu...
$user,$pwd);//---建表---$sql_create_table=<<<EOTCREATETABLEIFNOTEXISTSphp_pic(idINTUNSIGNEDAUTO_INCREMENTPRIMARYKEY,pic_pathVARCHAR(120)NOTNULL,pic_lengthINTUNSIGNEDDEFAULT0,pic_mimeTINYINTUNSIGNED,pic_widthSMALLINTUNSIGNED,pic_heightSMALLINTUNSIGNED);EOT;$len=$conn->exec...
php //1、连接数据库 $conn = mysql_connect("localhost","root",""); //2、选择test数据库 $db = mysql_select_db("test",$conn); //3、设置编码集 mysql_query("set names utf8"); $sql = ""; if(isset($_POST["sql"]) && $_POST["sql"] != null){ $sql = $_POST["sql"]; ...
public static function postBucket($bucket, $acl = null, $metaHeaders=array()) { $rest = new StorageRequest('POST', self::$__account, $bucket, '', self::$endpoint); if ($acl) { $rest->setSwsHeader('x-sws-container-read', $acl); ...
public static function current() {if(is_null(static::$current)) static::$current = static::detect();return static::$current;} detect 方法 public static function detect() {// create a server object from global$server = new Server($_SERVER);$try = array('REQUEST_URI', 'PATH_INFO', ...
public yii\base\Behavior|null detachBehavior ( $name ) $name string The behavior's name. return yii\base\Behavior|null The detached behavior. Null if the behavior does not exist. Source code detachBehaviors() public method Defined in: yii\base\Component::detachBehaviors() Detaches all be...
if(is_string($a)){ echo "0 is string;"; }else{ echo "0 is not string;"; } if(!$a){ echo "0 is false;"; }else{ echo "0 is not false;"; } // 判断 '' 和 0、null、empty、false 之间的关系 $a = ''; echo "'' 和 0、empty、null、false 之间的关系:"; ...
140141if(is_string($a))142{143echo"'' is string;";144}145else146{147echo"'' is not string;";148}149150if(!$a)151{152echo"'' is false;";153}154else155{156echo"'' is not false;";157}158159//判断 null 和 ''、0、empty、false 之间的关系160$a=null;161echo"null 和 ''、0、...