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A numeric string as array key in PHP
Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer?
11 A...
Difference between float and double in php?
...
There is no difference in PHP. float, double or real are the same datatype.
At the C level, everything is stored as a double.
The real size is still platform-dependent.
See the manual for more details:
http://www.php.net/manual/en/language.types.flo...
贝因美创始人谈连续创业 谢宏：蓝海策略下的未来赢家 - 资讯 - 清泛网 - 专...
...们怎么认识这个世界，了解这个世界，方法论是怎么解决问题，价值论是怎么评价价值，认知价值，创造价值。我们如果能够把这些思维用在创业创新过程当中，它是技术普适性的，这是我很重要的一个体会。
现在，我们企业...
PHP passing $_GET in linux command prompt
...you will use either argv global variable or getopt:
// bash command:
// php -e myscript.php hello
echo $argv[1]; // prints hello
// bash command:
// php -e myscript.php -f=world
$opts = getopt('f:');
echo $opts['f']; // prints world
$_GET refers to the HTTP GET method parameters, which are u...
How do I compare two DateTime objects in PHP 5.2.8?
Having a look on the PHP documentation, the following two methods of the DateTime object would both seem to solve my problem:
...
How do I log errors and warnings into a file?
...ile, but to set up all of that within the script (not changing anything in php.ini)?
7 Answers
...
Getting a timestamp for today at midnight?
How would I go about getting a timestamp in php for today at midnight. Say it's monday 5PM and I want the Timestamp for Monday(today) at midnight(12 am) which already has happened.
...
JavaScript equivalent of PHP's in_array()
... notice you wanted to see if an array was inside another. According to the PHP documentation this is the expected behavior of PHP's in_array:
$a = array(array('p', 'h'), array('p', 'r'), 'o');
if (in_array(array('p', 'h'), $a)) {
echo "'ph' was found\n";
}
if (in_array(array('f', 'i'), $a)) {...
How to clear APC cache entries?
...o clear all APC cache entries when I deploy a new version of the site.
APC.php has a button for clearing all opcode caches, but I don't see buttons for clearing all User Entries, or all System Entries, or all Per-Directory Entries.
...
解决Scrapy警告:You do not have a working installation of the service_i...
...e_identity-17.0.0-py2.py3-none-any.whl
如果上面的方法没能解决问题，很大可能是有些包的版本不一样导致的，这个时候我们可以用下面这行代码来强制更新：
pip install service_identity --force --upgrade
至此，问题解决。