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Java内存泄露原因详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...果不可到达,则就将其回收,这样也可以消除引用循环的问题。在Java语言中,判断一个内存空间是否符合垃圾收集标准有两个:一个是给对象赋予了空值null,以下再没有调用过,另一个是给对象赋予了新值,这样重新分配了内...
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How can I return pivot table output in MySQL?

...ieve this can be found here: http://www.artfulsoftware.com/infotree/qrytip.php?id=78 I advise reading this post and adapt this solution to your needs. Update After the link above is currently not available any longer I feel obliged to provide some additional information for all of you searching f...
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PHP - find entry by object property from an array of objects

...tion and subsequent answers for more information on the latter - Reference PHP array by multiple indexes share | improve this answer | follow | ...
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How to validate phone numbers using regex

... phone number is 1' OR 1=1 -- PWNED. See xkcd.com/327 and owasp.org/index.php/Testing_for_SQL_Injection_(OWASP-DV-005) – Aaron Newton Sep 19 '13 at 8:31 ...
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Why check both isset() and !empty()

... @karim IMO empty is one of the most misunderstood functions in PHP. The tiny snippet about "no warning is generated" is very easy to overlook. I had to scan the documentation myself a few times to spot it to post it here. – deceze♦ Dec 30 '10 at 4...
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Laravel redirect back to original destination after login

... in 5.1 it's in middleware RedirectIfAuthenticated.php: if ($this->auth->check()) { return redirect('/privatepage'); } – Dave Driesmans Jun 15 '15 at 11:40 ...
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mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get t

...s the reason. Unfortunately, by default such errors are not transferred to PHP, and all you've got is a cryptic error message mentioned above. Hence it is very important to configure PHP and MySQLi to report MySQL errors to you. And once you get the error message, fixing it will be a piece of cake....
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Check to see if a string is serialized?

... unserialize raw user data since it can be used as an attack vector. OWASP:PHP_Object_Injection – ArtBIT Sep 1 '17 at 18:56  |  show 5 more co...
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Can't use method return value in write context

...following piece of code should work, but it doesn't (Edited: Now works in PHP 5.5+) : 8 Answers ...
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Checking for empty arrays: count vs empty

This question on ' How to tell if a PHP array is empty ' had me thinking of this question 12 Answers ...