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Why do some scripts omit the closing PHP tag, '?>'? [duplicate]
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From PHP: Instruction Separation
The closing tag of a PHP block at the end of a file is optional, and in some cases omitting it is helpful when using include() or require(), so unwanted whitespace will not occur at the end of ...
What does it mean to start a PHP function with an ampersand?
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It's returning a reference, as mentioned already. In PHP 4, objects were assigned by value, just like any other value. This is highly unintuitive and contrary to how most other languages works.
To get around the problem, references were used for variables that pointed to obje...
做了个"外卖菜单选择器"App，才发现ListView和Spinner的区别这么...
...个组件就完事，结果在"用什么组件展示列表"这个问题上卡了整整两个小时——ListView还是Spinner？看着都差不多，实际用起来差别真不小。
需求分析
餐馆老板（也就是我妈）的要求：
• 菜品按分类展示，至少30道...
程序员之网络安全系列（六）：动态密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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程序员之网络安全系列（五）：数字证书以及12306的证书问题 我们使用了数字证书，确保了对方的公钥身份，也就是互联网中确定了要访问的网站就是你要访问的网站。
但是我们如何确定要访问这个网站的用户就是要访问的用...
Detect Browser Language in PHP
I use the following PHP script as index for my website.
12 Answers
12
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Error 330 (net::ERR_CONTENT_DECODING_FAILED):
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I came across this issue when php was outputting a plain text warning above the gzipped content.
– Mike Causer
Dec 12 '13 at 15:03
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Creating PHP class instance with a string
...\Bar\MyClass';
$instance = new $class();
Other cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$meth...
How to benchmark efficiency of PHP script
I want to know what is the best way to benchmark my PHP scripts. Does not matter if a cron job, or webpage or web service.
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Easy way to test a URL for 404 in PHP?
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If you are using PHP's curl bindings, you can check the error code using curl_getinfo as such:
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
/* Get the HTML or whatever is linked in $url. */
$response = cur...
PHP + MySQL transactions examples
I really haven't found normal example of PHP file where MySQL transactions are being used. Can you show me simple example of that?
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