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What does $$ (dollar dollar or double dollar) mean in PHP?

... Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity. ...
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How to parse a CSV file using PHP [duplicate]

...; $i2max=count($row); while($i2 < $i2max)// numeric loop (order really matters here) //while( list($k, $v) = each($row) ) { if($i2 != 0) $csv=$csv.$delim; $v=$row[$fields[$i2]]; if($mode=='EXCEL') //EXCEL 2quote escapes ...
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java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...存在于什么地方?3缓存有哪些属性?4缓存介质?搞清楚这4个问题,那么我们就可以随意的通过应用的场景来判断使用何...1、缓存为什么要存在? 2、缓存可以存在于什么地方? 3、缓存有哪些属性? 4、缓存介质? 搞清楚这4个...
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Discuz 找回密码时提示参数错误 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... 找回密码时提示参数错误source module member member_getpasswd.php第32行找到$uid = $_GET['uid'];在下方添加一行$sign = $_GET['sign'];tem...source\module\member\member_getpasswd.php 第32行找到 $uid = $_GET['uid']; 在下方添加一行 $sign = $_GET['sign']; templat...
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LR性能测试结果样例分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...这里出现了404的错误,为什么结果还都通过了。出现这样问题的原因是脚本有些页面的请求内容并非关键点,比如可能请求先前的cookie信息,如果没有就重新获取,所以不会影响最终的测试结果。 图1- 6 HTTP响应摘要 常用的HTT...
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从一个开发的角度看负载均衡和LVS - 更多技术 - 清泛网 - 专注C/C++及内核技术

...允许的情况下我们会采用软负载,软负载解决的两个核心问题是:选谁、转发,其中最著名的是LVS(Linux Virtual Server)。 三、软负载——LVS LVS是四层负载均衡,也就是说建立在OSI模型的第四层——传输层之上,传输层上有...
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Illegal string offset Warning PHP

...s will generate an illegal offset warning because of datatype mismatch. In order to solve this, you can use settype: $id = settype($array['id'],"integer"); // $id now contains an integer instead of a string testimonial($id); // now running smoothly ...
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How to convert an array to object in PHP?

...error Fatal error: Cannot re-assign $this in /var/www/bot/inc/twitter-bot.php on line 10 – streetparade Dec 8 '09 at 19:52 1 ...
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为什么我们程序员写不出好代码? - 杂谈 - 清泛网 - 专注C/C++及内核技术

...提交的仓库里。如果代码行数都计算在内的话,原本一个问题只需10行代码即可解决,程序员有可能编写5000行代码,来让功能更加灵活和兼容,这样,他的代码总量就会增加5000行了。 衡量生产力反而会使代码变的更糟,让项目...
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Access-Control-Allow-Origin error sending a jQuery Post to Google API's

...it was not cross domain but the same domain. I just added this line to the php file which was handling the ajax request. <?php header('Access-Control-Allow-Origin: *'); ?> It worked like a charm. Thanks to the poster ...