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How can we match a^n b^n with Java regex?
...our definition of "good". For example the recursive solution is around one order of magnitude faster than the other one (codepad.viper-7.com/CWgy7c). And it is far easier to understand. The recursive solution is pretty much the direct transformation of the grammar into a regex (actually you could ju...
What is SQL injection? [duplicate]
...t data is valid.
Do a code review to check for the possibility of second-order
attacks.
Use parameterised queries.
Use stored procedures.
Re-validate data in stored procedures.
Ensure that error messages give nothing away about the internal
architecture
When do I use the PHP constant “PHP_EOL”?
When is it a good idea to use PHP_EOL ?
19 Answers
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QUERY_STRING、REQUEST_URI、SCRIPT_NAME、PHP_SELF区别 - 更多技术 - 清泛...
QUERY_STRING、REQUEST_URI、SCRIPT_NAME、PHP_SELF区别通过实例说明PHP中QUERY_STRING、REQUEST_URI、SCRIPT_NAME、PHP_SELF区别。实例：
1、http://localhost/aaa/ （打开aaa中的index.php）
$_SERVER['QUERY_STRING'] = "";
$_SERVER['REQUEST_URI'] = "/aaa/";
$_SERVER['SCRIPT_NAME...
PHP Pass variable to next page
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You can add the variable in the link to the next page:
<a href="page2.php?varname=<?php echo $var_value ?>">Page2</a>
This will create a GET variable.
Another way is to include a hidden field in a form that submits to page two:
<form method="get" action="page2.php">
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C++并发编程（中文版） - 文档下载 - 清泛网 - 专注C/C++及内核技术
...28
第3章 在线程间共享数据… 29
3.1 线程之间共享数据的问题… 29
3.1.1 竞争条件… 31
3.1.2 避免有问题的竞争条件… 31
3.2 用互斥元保护共享数据… 32
3.2.1 使用C++中的互斥元… 32
3.2.2 用于保护共享数据的结构化代码… 33
3.2.3...
On delete cascade with doctrine2
I'm trying to make a simple example in order to learn how to delete a row from a parent table and automatically delete the matching rows in the child table using Doctrine2.
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How can one use multi threading in PHP applications
Is there a realistic way of implementing a multi-threaded model in PHP whether truly, or just simulating it. Some time back it was suggested that you could force the operating system to load another instance of the PHP executable and handle other simultaneous processes.
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How to get URL of current page in PHP [duplicate]
In PHP, how can I get the URL of the current page? Preferably just the parts after http://domain.com .
5 Answers
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Inserting multiple rows in mysql
... they are the table column names in which to insert the values in the same order.
– BeetleJuice
Aug 29 '17 at 13:25
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