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PHP 判断文件是否有内容，没有内容则复制另一个文件写入
2022-08-10 13:02:00 【每天都进步一点点】
// 如果config.php为空或不存在，则复制dbc.php文件内容写入
if(@filesize(__DIR__.'/data/config.php') == 0){
@copy(__DIR__.'/data/dbc.php', __DIR__.'/data/config.php');
}
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