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New self vs. new static
I am converting a PHP 5.3 library to work on PHP 5.2. The main thing standing in my way is the use of late static binding like return new static($options); , if I convert this to return new self($options) will I get the same results?
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How to convert DateTime to VarChar
...this post (stackoverflow.com/questions/59667/…) for more details. Essentially, there are 2 bytes of overhead involved in VARCHAR vs CHAR. In this scenario, we know that your string will always be 10 characters, so CHAR is appropriate.
– Will Ediger
Dec 30 '14...
How to get the error message from the error code returned by GetLastError()?
After a Windows API call, how can I get the last error message in a textual form?
11 Answers
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Case insensitive XPath contains() possible?
I'm running over all textnodes of my DOM and check if the nodeValue contains a certain string.
6 Answers
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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...义。在继续之前，不妨先介绍一下案例的背景情况：一个PHP网站，以读为主，原本躲在CDN后面，运行很稳定，后来新增了很多强调个性化的需求，便去掉了CDN，进而导致系统稳定性受到影响。因为历史包袱重，所以完全废弃以前...
PHP global in functions
...ngletons, registries, constants). You do not want to use them. A function call should not have to rely on anything outside, e.g.
function fn()
{
global $foo; // never ever use that
$a = SOME_CONSTANT // do not use that
$b = Foo::SOME_CONSTANT; // do not use that unl...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...of an application. In particular, rand() and uniqid() are not cryptographically secure random number generators. See Scott's answer for a secure alternative.
If you do not need it to be absolutely unique over time:
md5(uniqid(rand(), true))
Otherwise (given you have already determined a unique l...
How to pass an array within a query string?
...s[]" value="Mercedes">
NOTE: Using field[] for multiple values is really poorly documented. I don't see any mention of it in the section on multi-valued keys in Query string - Wikipedia, or in the W3C docs dealing with multi-select inputs.
UPDATE
As commenters have pointed out, this is ve...
How to convert an image to base64 encoding?
...ts("/path/to/image.jpg");
// alternatively specify an URL, if PHP settings allow
$base64 = base64_encode($imagedata);
bear in mind that this will enlarge the data by 33%, and you'll have problems with files whose size exceed your memory_limit.
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WordPress asking for my FTP credentials to install plugins
I installed a WordPress blog in my local system. But when I try to add plugins from admin it asks for FTP access. What do I need to configure for WordPress to be able to upload without FTP?
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