我怎樣才能把$變量到數組

Question

你好，這是我想提出一個變量到數組代碼

class NewTest extends BaseExample { 
    public function render() { 
    $startDate = $this->getNow(); 
    $endDate = $this->getNow(); 
    $optParams = array(
     'metric' => array('EARNINGS'), 
     'useTimezoneReporting' => true, 
     'filter' => 'DOMAIN_NAME==' .$sub. ',  
    ); 

我試過' .$sub.'和$子，但它不工作

Answer 1

小語法錯誤 - 只是不得不刪除最後. '

class NewTest extends BaseExample { 
    public function render() { 
    $startDate = $this->getNow(); 
    $endDate = $this->getNow(); 
    $optParams = array(
    'metric' => array('EARNINGS'), 
    'useTimezoneReporting' => true, 
    'filter' => 'DOMAIN_NAME==' . $sub,  
    ); 
} 
} 

Answer 2

一個'缺少

'filter' => 'DOMAIN_NAME==' .$sub. '', 

既然是沒用的，這應該是更好的

'filter' => 'DOMAIN_NAME==' .$sub, 

Answer 3

刪除 '

class NewTest extends BaseExample { 
    public function render() { 
    $startDate = $this->getNow(); 
    $endDate = $this->getNow(); 
    $optParams = array(
     'metric' => array('EARNINGS'), 
     'useTimezoneReporting' => true, 
     'filter' => 'DOMAIN_NAME==' .$sub,  
    );