5: 5種循環經濟模式一次看！台積電、戴爾都導入，如何做到資源永續循環？
: file_put_contents(aCache/aaa/gnews/FL// 5.xml): Failed to open stream: No space left on device in
: Uncaught mysqli_sql_exception: Too many connections in /var/www/hoodb/function.php:270
Stack trace:
#0 /var/www/hoodb/function.php(270): mysqli_connect()
#1 /var/www/hoodb/function.php(276): db()
#2 /var/www/hoodb/function.php(292): select()
#3 /var/www/hoodb/function.php(108): daCache()
#4 /var/www/hoodb/redirect.php(241): showNav()
#5 /var/www/hoodb/route.php(53): include_once('...')
#6 /var/www/hoodb/route.php(20): go()
#7 {main}
thrown in