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逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...

...个字符串。那么,找到这个内存地址中的字符串便能解决问题了。那么如何去寻找呢,于是乎我又翻看我的那几十页代码纸,企图人工计算出来。后来发现数据段的的值没有包含。终于,我开始想到了gdb这个工具。干嘛不在0x8048...
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What does new self(); mean in PHP?

... the parent class The first situation would look like this (I've removed all non-necessary code, for this example -- you'll have to add it back to get the singleton behavior)* : class MyParentClass { } class MyChildClass extends MyParentClass { public static function getInstance() { ...
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VIM Disable Automatic Newline At End Of File

So I work in a PHP shop, and we all use different editors, and we all have to work on windows. I use vim, and everyone in the shop keeps complaining that whenever I edit a file there is a newline at the bottom. I've searched around and found that this is a documented behavior of vi & vim... but I w...
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Why won't my PHP app send a 404 error?

... Your code is technically correct. If you looked at the headers of that blank page, you'd see a 404 header, and other computers/programs would be able to correctly identify the response as file not found. Of course, your users are still SOL. N...
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How to call a JavaScript function from PHP?

How to call a JavaScript function from PHP? 10 Answers 10 ...
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Best way to test for a variable's existence in PHP; isset() is clearly broken

... This looks a bit ugly to me, but in the case where you're actually checking an array element, it makes much more sense: isset($foo[$bar]) becomes array_key_exists($bar, $foo) – Arild Aug 25 '14 at 14:12 ...
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Best XML Parser for PHP [duplicate]

...saves on memory. You pay for that with not being able to use XPath. Personally, I find SimpleXml quite limiting (hence simple) in what it offers over DOM. You can switch between DOM and SimpleXml easily though, but I usually dont bother and go the DOM route directly. DOM is an implementation of the...
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PHP random string generator

... To answer this question specifically, two problems: $randstring is not in scope when you echo it. The characters are not getting concatenated together in the loop. Here's a code snippet with the corrections: function generateRandomString($length = 10)...
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Passing arrays as url parameter

...5D=4&aParam%5Ba%5D=b&aParam%5Bc%5D=d" http_build_query() handles all the necessary escaping for you (%5B => [ and %5D => ]), so this string is equal to aParam[0]=1&aParam[1]=4&aParam[a]=b&aParam[c]=d. ...
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Parsing a string into a boolean value in PHP

...urned only for "0", "false", "off", "no", and "", and NULL is returned for all non-boolean values. share | improve this answer | follow | ...