...true 注意:如果變量不存在,isset()和empty()都不會報錯;is_null(),is_numeric()會報錯用來判斷常量會報錯,比如:null,true,false,‘’,‘123adf’,123 如何區(qū)別如下數(shù)組中 [0,,null] 三個元素?(1)區(qū)別0: $a = 0; isset($a) && is_numeric($a) === ...
...: protected function getNextJob($connection, $queue) { if (is_null($queue)) { return $connection->pop(); } foreach (explode(,, $queue) as $queue) { ...
...# 檢查當(dāng)前頁數(shù) if ($this->currentPage == $this->page && !is_null($S2)) { # 開始插入 foreach ($S2 as $k => $v) { $ELS = $v->getElements(); ...
...tract); $needsContextualBuild = ! empty($parameters) || ! is_null( $this->getContextualConcrete($abstract) ); // If an instance of the type is currentl...
...rn self::getSharedInstance(renderer, $viewPath, $config); } if (is_null($config)) { $config = new ConfigView(); } return new CodeIgniterViewView($config, $viewPath, se...
... [ INNER JOIN `user` ON `user`.id = `post`.id, if => !is_null($this->name), ], [WHERE 1 = 1], [ AND `post`.id = :id, params => [id => $this->id], ...
...字段就是里面的type字段了。type字段總共有7個值,分別是IS_NULL,IS_BOOL,IS_LONG,IS_DOUBLE,IS_STRING,ISARRAY,IS_OBJECT,IS_RESOURCE。 這個里面包含了所有的php基本類型: 標(biāo)量類型:IS_BOOL,IS_lONG,IS_DOUBLE,IS_STRING 復(fù)合類型:IS_ARRAY,IS_OBJE...
...rstName, empty($person->firstName), isset($person->firstName), is_null($person->firstName) ); 以上結(jié)果為: string(5) Freek bool(true) // empty bool(true) // isset bool(false) // is_null 譯者注:這...
... return array_filter($this->parameters(), function ($p) { return ! is_null($p); }); } protected function resolveClassMethodDependencies(array $parameters, $instance, $method) { // _...
...{ // 檢查session.php中driver選項是否設(shè)置 return ! is_null(Arr::get($this->manager->getSessionConfig(), driver)); } // IlluminateSessionSessionManager /** * Get the sess...
...nction bind($abstract, $concrete = null, $shared = false) { if(is_null($concrete)){ $concrete = $abstract; } if(!$concrete instanceOf Closure){ ...
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