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What is non-blocking or asynchronous I/O in Node.js?
...chronous, blocking operations is how some web servers like ones in Java or PHP handle IO or network requests. If your code reads from a file or the database, your code "blocks" everything after it from executing. In that period, your machine is holding onto memory and processing time for a thread th...
memory_get_peak_usage() with “real usage”
If the real_usage argument is set to true the PHP DOCS say it will get the real size of memory allocated from system. If it's false it will get the memory reported by emalloc()
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JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
...mponents.
Programming language for generating JSON
Python - snake_case
PHP - snake_case
Java - camelCase
JavaScript - camelCase
JSON itself has no standard naming of keys
Programming language for parsing JSON
Python - snake_case
PHP - snake_case
Java - camelCase
JavaScript - camelCase
Mix-...
How to delete a file via PHP?
How do I delete a file from my server with PHP if the file is in another directory?
6 Answers
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Manipulate a url string by adding GET parameters
...
Basic method
$query = parse_url($url, PHP_URL_QUERY);
// Returns a string if the URL has parameters or NULL if not
if ($query) {
$url .= '&category=1';
} else {
$url .= '?category=1';
}
More advanced
$url = 'http://example.com/search?keyword=test&...
If isset $_POST
... This comparison table is very helpful for things like this php.net/manual/en/types.comparisons.php
– A Star
Jun 4 '13 at 22:16
2
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Remove URL parameters without refreshing page
...m/old-page-name => can become => www.example.com/myNewPaage20180322.php
Background
We can use:
1- The pushState() method if you want to add a new modified URL to history entries.
2- The replaceState() method if you want to update/replace current history entry.
.replaceState() operate...
Does file_get_contents() have a timeout setting?
... link may take more than 15 minutes to process. Now, I worry about whether PHP's file_get_contents() has a timeout period?
...
linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...成DROP的话)
允许loopback!(不然会导致DNS无法正常关闭等问题)
IPTABLES -A INPUT -i lo -p all -j ACCEPT (如果是INPUT DROP)
IPTABLES -A OUTPUT -o lo -p all -j ACCEPT(如果是OUTPUT DROP)
下面写OUTPUT链,OUTPUT链默认规则是ACCEPT,所以我们就写需要DROP(放弃)...
How would you make a comma-separated string from a list of strings?
...gIO
import StringIO
import csv
l = ['list','of','["""crazy"quotes"and\'',123,'other things']
line = StringIO.StringIO()
writer = csv.writer(line)
writer.writerow(l)
csvcontent = line.getvalue()
# 'list,of,"[""""""crazy""quotes""and\'",123,other things\r\n'
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