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房多多：懂用户比懂互联网重要 - 资讯 - 清泛网 - 专注C/C++及内核技术
...既得利润，要有所为有所不为。
创业的第一年，面临的问题是你到底想干什么，是做交易还是做平台。过去十几年我做交易，公司不到一年也有几千万元的净利润。
但是做交易与做平台是有矛盾的，好比运动员同时想搭平台...
What is copy-on-write?
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I found this good article about zval in PHP, which mentioned COW too:
Copy On Write (abbreviated as ‘COW’) is a trick designed to save memory. It is used more generally in software engineering. It means that PHP will copy the memory (or allocate new memory ...
Convert a PHP script into a stand-alone windows executable
I want to automate a fairly simple task. For this I have written a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
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Can I use a hash sign (#) for commenting in PHP?
I have never, ever, seen a PHP file using hashes ( # ) for commenting. But today I realized that I actually can! I'm assuming there's a reason why everybody uses // instead though, so here I am.
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Fatal error: Maximum execution time of 300 seconds exceeded
I keep getting this PHP error:
18 Answers
18
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MySQL connection not working: 2002 No such file or directory
...ause you are using (LAMPP) XAMPP and it isn't in /tmp/mysql.sock
Open the php.ini file and find this line:
mysql.default_socket
And make it
mysql.default_socket = /path/to/mysql.sock
share
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i...
云数据及Firebase组件简介 · App Inventor 2 中文网
...称为 FirebaseError，它让 Web 服务报告错误，这通常是通信问题的结果：
ShareValue：一个带有云数据的简单App
ShareValue 是一个使用 FirebaseDB 组件的简单应用程序。 它允许安装该应用程序的任何人设置共享云值并查看该值何时发生...
In PHP, why does not show a parse error?
I was running the following PHP code:
2 Answers
2
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php：获取数组第一个值 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php：获取数组第一个值自PHP 5.4版本后可以使用[ ]来取数据指定位置的元素，索引从0开始，即$arr[0]取数组第一个值。不过为了兼容性，建议还是采取reset(),current(),next()等函数来取数组中的值，reset($arr)后current($arr)取第一个值。自...
Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据 - 爬虫/数据库 - 清...
...需要注释掉，不然恢复模式不好操作。 这里有个关键的问题，就是innodb里的任何数据操作都是一个日志的记录点。也就是如果我们需要数据恢复，必须把之前的表的数据的日志记录点添加到一致。
a、建立一个数据库，根据上...