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总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...至它即便不是一个CDerived你也可以这样做。
当然，这个问题只在如果你做了多继承时发生。在你将CDerived转换 到 CBaseX时static_cast<> 和 reinterpret_cast<>是没有区别的。
情况3：void*之间的向前和向后转换
因为任何指针可以被转...
How to set my phpmyadmin user session to not time out so quickly? [duplicate]
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To increase the phpMyAdmin Session Timeout, open config.inc.php in the root phpMyAdmin directory and add this setting (anywhere).
$cfg['LoginCookieValidity'] = <your_new_timeout>;
Where <your_new_timeout> is some number larger...
`static` keyword inside function?
... found some things I hadn't seen before. I did some initial looking in the php manual, but it didn't explain these examples.
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PHP's array_map including keys
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Here's my very simple, PHP 5.5-compatible solution:
function array_map_assoc(callable $f, array $a) {
return array_column(array_map($f, array_keys($a), $a), 1, 0);
}
The callable you supply should itself return an array with two values, i.e. r...
How can I access an object property named as a variable in php?
...name" is used without the quotes. Seems to be working, but is it for newer php versions only?
– Lamy
Mar 10 '15 at 14:01
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PHP - iterate on string characters
...ated array
foreach ($array as $char) {
echo $char;
}
You can check the PHP docs for more information: str_split
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Illegal string offset Warning PHP
I get a strange PHP error after updating my php version to 5.4.0-3.
16 Answers
16
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How can I break an outer loop with PHP?
I am looking to break an outer for/foreach loop in PHP.
6 Answers
6
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Dynamically generating a QR code with PHP [closed]
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The easiest way to generate QR codes with PHP is the phpqrcode library.
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How to remove extension from string (only real extension!)
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http://php.net/manual/en/function.pathinfo.php
$filename = pathinfo('filename.md.txt', PATHINFO_FILENAME); // returns 'filename.md'
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