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How to empty (“truncate”) a file on linux that already exists and is protected in someway?
I have a file called error.log on my server that I need to frequently truncate. I have rw permissions for the file. Opening the file in vi > deleting all content > saving works (obviously). But when I try the below
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How to do error logging in CodeIgniter (PHP)
I want error logging in PHP CodeIgniter. How do I enable error logging?
5 Answers
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How to merge every two lines into one from the command line?
...inside the quotes.
References:
Originally "Plenty of ways to skin the cat", reverted to an older, potentially originating expression that also has nothing to do with pets.
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Convert number to month name in PHP
I have this PHP code:
26 Answers
26
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致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术
致PHP路上的“年轻人”今晚在公司，又与一位刚做PHP工作一年的朋友聊了甚久。他与他们有一样的问题，比较迷茫。而我当年也有他们的困惑。虽然自己也还年轻，但作...今晚在公司，又与一位刚做PHP工作一年的朋友聊了甚久。...
What's the most efficient test of whether a PHP string ends with another string?
The standard PHP way to test whether a string $str ends with a substring $test is:
13 Answers
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PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
...) can use prepared statements in the query cache. So your version of MySQL+PHP can use prepared statements with the query cache. However, make careful note of the caveats for caching query results in the MySQL documentation. There are many kinds of queries which cannot be cached or which are useless...
Calling closure assigned to object property directly
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As of PHP7, you can do
$obj = new StdClass;
$obj->fn = function($arg) { return "Hello $arg"; };
echo ($obj->fn)('World');
or use Closure::call(), though that doesn't work on a StdClass.
Before PHP7, you'd have to implem...
Get PHP class property by string
How do I get a property in a PHP based on a string? I'll call it magic . So what is magic ?
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MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...的Stack大小，可以用如下命令确认（单位：K）：
shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/...