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How does PHP 'foreach' actually work?
...ointer backup+restore mechanism is that changes to the IAP through reset() etc. usually do not impact foreach. For example, the following code executes as if the reset() were not present at all:
$array = [1, 2, 3, 4, 5];
foreach ($array as &$value) {
var_dump($value);
reset($array);
}
/...
Stack Overflow：StackExchange网络不同主题网站的”祖父“ - 更多技术 - ...
...最早设立的是Stack Overflow，即一个供程序员互相解答编程问题的问答网站，随后我们试图将同样的技术推广到编程之外的领域，比如说烹饪、摄影等等，每个主题的问答站点就都称为StackExchange，合起来也就是StackExchange网络。因...
Remove excess whitespace from within a string
...str = str_replace(' ','',$str);
Or, replace with underscore, & nbsp; etc etc.
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译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。既然它们是一些不知名的概念，我简单就着前面的三个问题来说明一下。
强引用(Strong Reference)
强引用就是我们经常使用的引用，其写法如下
StringBuffer buffer = new StringBuffer();
上面创建了一个StringBuffer对象，并将这个对象的...
How do I strip all spaces out of a string in PHP? [duplicate]
...ds, whitespace is any kind of space in text: regular space, new line, tab, etc
– juuga
Sep 13 '13 at 8:37
You need @Bu...
How to identify server IP address in PHP
... @andreas It shouldn't. The local hostname should be in the /etc/hosts file and will be fast - although it might just be 127.0.0.1. If it does have to call DNS then it will be slow like you say.
– Ariel
Feb 12 '15 at 10:39
...
PHP convert date format dd/mm/yyyy => yyyy-mm-dd [duplicate]
...);
Then use $current_time as needed in your app (store, add or subtract, etc), then when you need to display the date value it to your users, you can use date() to specify your desired date format:
// Display a human-readable date format
echo date('d-m-Y', $current_time);
This way you'll avoid ...
Display numbers with ordinal suffix in PHP
...ossible to get the ordinal number in word form? i.e. first, second, third, etc. instead of 1st, 2nd, 3rd...
– its_me
Oct 16 '13 at 19:05
...
PHP multidimensional array search by value
...is did not work for me when the key in the $userdb did not start as 0,1, 2 etc.. and say the key are 1234,4566 etc. The resulting keys after the array_search are always 0,1,2 and so on
– Kaushtuv
Apr 11 '16 at 6:41
...
.htaccess: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included i
...sudo service apache2 restart
or
sudo a2enmod rewrite && sudo /etc/init.d/apache2 restart
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