如何在数组中使用 if 语句？

Question

我尝试在数组中创建一个 if 语句：

  $formBuilder->add('getTimestamp', DateType::class, array(
              'widget' => 'single_text',
               if($target == "new"){
                  'data' => new \DateTime(),
                }
                'attr' => array('class' => 'form-control', 'style' => 'line-height: 20px;'), 'label' => $field['fieldName'],
               ));

但我收到一条错误消息

(1/1) ParseError

syntax error, unexpected 'if' (T_IF), expecting ')'

Answer 1

问题是数组中的 if。这是无效的 php 语法。你可以把它移到外面。

$options = [
     'widget' => 'single_text',
     'attr' => array('class' => 'form-control', 'style' => 'line-height: 20px;'), 'label' => $field['fieldName'],
];
if($target == "new"){
    $options['data'] = new \DateTime();
}

$formBuilder->add('getTimestamp', DateType::class, $options);

Answer 2

'data' => $target == 'new' ? new \DateTime() : ''

如何在数组中使用 if 语句？

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