php - 如何在 foreach 循环中使用对象并替换变量 (OOP)？

Question

这段代码...

 foreach ($classes->fieldMappings as $fieldMapping) {
        echo $fieldMapping['fieldName'];
 }

...给我以下输出：

id
username
password
email
isActive

我现在想做的是，我想把这段代码......

$entity->setUsername($data['form[username]']);
$entity->setEmail($data['form[email]']);
$entity->setPassword($data['form[password]']);
$entity->setIsActive($data['form[isActive]']);

...进入一个循环。所以我像这样替换它：

foreach ($classes->fieldMappings as $fieldMapping) { 
   $entity->set'.$fieldMapping['fieldName'].'($data['form['.$fieldMapping['fieldName'].']']);
}

我得到一个解析错误，但我实际上不知道如何以正确的方式编写它。

标签： phploopsoopobject

Answer 1

您可以在一行中完成，请参阅PHP: Strings中的复杂（卷曲）语法：

$entity->{'set'.$fieldMapping['fieldName']}($data['form['.$fieldMapping['fieldName'].']']);

但是，它可能更具可读性：

$func = 'set'.$fieldMapping['fieldName'];
$args = $data['form['.$fieldMapping['fieldName'].']'];
$entity->$func($args);