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php出现 Notice: Undefined index: xxx 的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php出现 Notice: Undefined index: xxx 的解决方法Php_Notice_Undefined_index出现 "Undefined index: xxx "警告的原因：PHP 本身不需要事先声明变量即可直接使用，但是对未声明变量会有提示，最好的办法是使用变量之前先检查变量是否存在。出现"...
is_null($x) vs $x === null in PHP [duplicate]
PHP has two (that I know of, and three if you count isset() ) methods to determine if a value is null: is_null() and === null . I have heard, but not confirmed, that === null is faster, but in a code review someone strongly suggested that I use is_null() instead as it is specifically design...
What is the JavaScript equivalent of var_dump or print_r in PHP? [duplicate]
...ct in JavaScript (for debugging). Is there anything similar to var_dump in PHP?
9 Answers
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Getting visitors country from their IP
... via their IP... Right now I'm using this ( http://api.hostip.info/country.php?ip= ...... )
29 Answers
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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...进依赖项，否则会出错。最开始的时候，就是这么一点小问题，让我浪费了几天时间。
再点击添加必须的插件，自动添加其它的依赖项。
再下一步，设置项目的构建路径，如下图：
下一步，导出我们的...
PHP mail function doesn't complete sending of e-mail
...t it submits to a separate "thank you for your submission" page, thankyou.php , where the above PHP code is embedded.
The code submits perfectly, but never sends an email. How can I fix this?
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How to write into a file in PHP?
I have this script on one free PHP-supporting server:
9 Answers
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Get fragment (value after hash '#') from a URL in php [closed]
How can i select the fragment after the '#' symbol in my URL using PHP?
The result that i want is "photo45".
10 Answers
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PHP Fatal error: Cannot redeclare class
...x situation). The include_once tip helps to clarify an obscure feature of PHP.
– DavidHyogo
Mar 20 '13 at 2:12
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惨不忍睹：说一说你最穷的时候是什么样子 - 创意 - 清泛网 - 专注C/C++及内核技术
...话说，一分钱难倒英雄汉，有的时候没钱真的很难。那么问题来了，...
每个人的一生中都会和金钱打交道，每个人也都会遇到囊中羞涩的时候。俗话说，一分钱难倒英雄汉，有的时候没钱真的很难。那么问题来了，你最穷...