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php中三个等于号是什么意思？=== - PHP - 清泛IT论坛，有思想、有深度
1、=：赋值，在逻辑运算时也有效；
2、==：等于运算，但是不比较值的类型；
3、===：完全等于运算，不仅比较值，而且还比较值的类型，只有两者一致才为真。
How do I convert datetime to ISO 8601 in PHP
...mat(DateTime::ATOM); // Updated ISO8601
Procedural
For older versions of PHP, or if you are more comfortable with procedural code.
echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46'));
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PHP: How to use array_filter() to filter array keys?
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PHP 5.6 introduced a third parameter to array_filter(), flag, that you can set to ARRAY_FILTER_USE_KEY to filter by key instead of value:
$my_array = ['foo' => 1, 'hello' => 'world'];
$allowed = ['foo', 'bar'];
$filte...
Best way to use PHP to encrypt and decrypt passwords? [duplicate]
...bcrypt. This answer explains how to properly implement password hashing in PHP. Still, here is how you would encrypt/decrypt:
$key = 'password to (en/de)crypt';
$string = ' string to be encrypted '; // note the spaces
To Encrypt:
$iv = mcrypt_create_iv(
mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128...
File upload progress bar with jQuery
...responseText);
}
});
});
html:
<form action="file-echo2.php" method="post" enctype="multipart/form-data">
<input type="file" name="myfile"><br>
<input type="submit" value="Upload File to Server">
</form>
<div class="progress">
<div ...
PHPMyAdmin Default login password [closed]
I have done a fresh installation of Fedora 14 and installed the phpMyAdmin module. When I run phpMyAdmin, it asks me for a username and password.
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Mac 下载安装Redis - 更多技术 - 清泛网 - 专注C/C++及内核技术
...证每次加载的时候都使用你编辑好的配置文件。
F.安装PHP Redi扩展 这里采用PECl安装方式
sudo pecl install redis
执行完毕后说明已经安装完成，编辑php.ini 加入下面这一句
extension=redis.so
然后重启web 服务并重启PHP-FPM,在phpi...
PHP global in functions
...alVariablesAreBad
How is testing the registry pattern or singleton hard in PHP?
Flaw: Brittle Global State & Singletons
static considered harmful
Why Singletons have no use in PHP
SOLID (object-oriented design)
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Detect when browser receives file download
...expireCookie( "downloadToken" );
attempts = 30;
}
Example server code (PHP):
$TOKEN = "downloadToken";
// Sets a cookie so that when the download begins the browser can
// unblock the submit button (thus helping to prevent multiple clicks).
// The false parameter allows the cookie to be expose...
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网移动...
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艾伦·考克斯不喜欢这个解决方案，这表明该容器是控制问题的最适当方式。为了响应这个建议，由 Nikanth Karthikesan 贡献的oom_killer 控制器提供了在系统内存不足时要杀死的进程序列的控制。该补丁引入了一个带有oom.priority字段...