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创业 比“直男癌”更可怕的是“技术癌” - 资讯 - 清泛网 - 专注C/C++及内核技术
...方案成本过高，则实用性大大降低，仍然无法真正地解决问题。更有甚者，明明市场上已有采用通用技术的、低成本的解决方案，却仅仅因为对技术的痴迷而生搬硬套地非要用高科技、高大上的手段去替代现有方案，却无视其带...
how to detect search engine bots with php?
...n set the user-agent to what they want, looking for 'Googlebot', 'bingbot' etc is only half the job.
The 2nd part is verifying the client's IP. In the old days this required maintaining IP lists. All the lists you find online are outdated. The top search engines officially support verification thro...
How do I pass variables and data from PHP to JavaScript?
...equests are carried over network and have network latencies.
State - Data fetched via a separate HTTP request won't include any information from the HTTP request that fetched the HTML document. You may need this information (e.g., if the HTML document is generated in response to a form submission) a...
Loop code for each file in a directory [duplicate]
...
Try GLOB()
$dir = "/etc/php5/*";
// Open a known directory, and proceed to read its contents
foreach(glob($dir) as $file)
{
echo "filename: $file : filetype: " . filetype($file) . "<br />";
}
...
cleanest way to skip a foreach if array is empty [duplicate]
...anguage. PHP variable can store anything, that's why is_array, is_numeric, etc are needed functions.
– Daniel Wu
Nov 22 '19 at 5:41
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How can I check if a URL exists via PHP?
...returned by get_headers() are well formed.
Use curl (if you can).
Prevent fetching the entire body/content, but only request the headers.
Consider redirecting urls:
Do you want the first code returned?
Or follow all redirects and return the last code?
You might end up with a 200, but it could redire...
How do you debug PHP scripts? [closed]
... Platform. That gives proper debugging, breakpoints/stepping over the code etc., although at a price.
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answered Aug 3 '08 at 23:20
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How do PHP sessions work? (not “how are they used?”)
...ions in PHP are started by using the session_start( ) function. Like the setcookie( ) function, the session_start( ) function must come before any HTML, including blank lines, on the page. It will look like this:
<?php session_start( );?><html><head>
....... etc
The session_star...
Why are functions and methods in PHP case-insensitive?
...parser slowly grew to include conditional tags, then loop tags, functions, etc. At no point did I think I was writing a scripting language. I was simply adding a little bit of functionality to the macro replacement parser. I was still writing all my real business logic in C.
I have read somewhere t...
无社交不商业，Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术
...司，居然打败了如此强大的出租车公司。
这说明了一个问题：就是连接比拥有更加重要。
连接是一种关系，而你拥有的只是物质，也就是说，现在的世界，关系比物质更重要。
讲到这里，我们还没有真正了解互联网...