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双引号中使用常量

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2016-06-06 19:37:012280browse

感觉很奇怪的写法，但能用..... 无 define('TEST', 'World'); $constant = 'constant'; echo "Hello {$constant('TEST')}";

感觉很奇怪的写法，但能用..... 
define('TEST', 'World');  
$constant = 'constant';  
echo "Hello {$constant('TEST')}";
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