Check if table exists in database 说明 public mysql_xdevapi\Table::existsInDatabase ( void ) : bool Verifies if this table exists in the database. 参数 此函数没有参数。返回值 Returns TRUE if table exists in the database, else FALSE if it does not. ...
'/')) { $filter: "intval"if (1 !== preg_match($filters, (string) $data)) {// 支持正则验证return isset($default) ? $default : null;}} else {$filters = explode(',', $filters);}} elseif (is_int($filters)) {$filters = array($...
.. function myfunc () { // obtain db object created in init () $db = MysqliDb::getInstance(); ... }Multiple database connectionIf you need to connect to multiple databases use following method:$db->addConnection('slave', Array ( 'host' => 'host', 'username' => 'username', '...
$%', $pathInfo, $matches)) { // check $matches[1] and $matches[3] to see // if they match a manufacturer and a model in the database // If so, set $_GET['manufacturer'] and/or $_GET['model'] // and return 'car/index' } return false; // this rule does not apply } ...
('influx_test_db');// create the database with a retention policy$result=$database->create(newRetentionPolicy('test','5d',1,true));// check if a database exists then create it if it doesn't$database=$client->selectDB('test_db');if(!$database->exists()) {$database->create(...
To rename an existing database table, use therenamemethod: 1Schema::rename($from,$to); To drop an existing table, you may use thedropordropIfExistsmethods: 1Schema::drop('users'); 2 3Schema::dropIfExists('users'); Renaming Tables With Foreign Keys ...
对应laravel中的facade及其函数是Hash::make(),Hash::check(),其底层使用了 github.com/ircmaxell/password_compat这个package Redirect::intended() 对于保护的路由,我们有这样的需求:一旦用户登录并且有权访问这个路由的话,我们希望直接redirect到先前的这个路由,这里Redirect::intended()就是满足这个场景的。
database, allowing your team to define and share the application's database schema definition. If you have ever had to tell a teammate to manually add a column to their local database schema after pulling in your changes from source control, you've faced the problem that database migrations...
<?php// 声明functionfoo(){// function body}// 条件判断if(!function_exists('bar')){functionbar(){// function body}} 命名空间和类: 命名空间和类必须遵循PSR-4自动加载器标准。 类的名称: 每个类都有自己的命名空间,且都在顶级命名空间下,类名必须使用驼峰式(CamelCase)。 PHP 5.3 及以上,必须使...
$id = Swoole\Timer::tick(100, function () { echo "⚙️ Do something...\n"; }); Swoole\Timer::after(500, function () use ($id) { Swoole\Timer::clear($id); echo "⏰ Done\n"; }); Swoole\Timer::after(1000, function () use ($id) { if (!Swoole\Timer::exists($id)...