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Make an HTTP request with android
...nswer, is there a way to make an simple HTTP request? I want to request an PHP page / script on one of my website but I don't want to show the webpage.
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Detecting iOS / Android Operating system
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You can also Achieve this with user agent on php:
$userAgent = strtolower($_SERVER['HTTP_USER_AGENT']);
if(stripos($userAgent,'android') !== false) { // && stripos($userAgent,'mobile') !== false) {
header('Location: http://oursite.com/download/yourApp.apk');...
How to pass parameters correctly?
...mally by copying the object (**)
(*) pointers may refers to dynamically allocated memory, therefore when possible you should prefer references over pointers even if references are, in the end, usually implemented as pointers.
(**) "normally" means by copy constructor (if you pass an object of th...
Generate colors between red and green for a power meter?
...t how to improve a color algorithm i have for coloring a bar chart in HTML/PHP... SO suggested this question as similar and your answer helped me fix the issue without having to ask the question! Thanks!
– beggs
Jul 30 '09 at 3:49
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What is the difference between declarative and procedural programming paradigms?
...ich support the procedural paradigm:
C (and most other legacy languages)
PHP, mostly
In some sense, all major languages
Object-Oriented
It typically refers to languages that exhibit a hierarchy of types that inherit both methods and state from base types to derived types, but also includes the ...
PostgreSQL Connection URL
...er=host;Port=5432;User Id=username;Password=secret;Database=databasename;
PHP documentation us here, the general connection string is
host=hostname port=5432 dbname=databasename user=username password=secret
If you're using something else, you'll have to tell us.
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How to check if hex color is “too black”?
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I found this WooCommerce Wordpress PHP function (wc_hex_is_light) and I converted to JavaScript. Works fine!
function wc_hex_is_light(color) {
const hex = color.replace('#', '');
const c_r = parseInt(hex.substr(0, 2), 16);
const c_g = parseInt(hex...
What's “P=NP?”, and why is it such a famous question? [closed]
...On the other hand, there's whole classes of planning problems and resource allocation problems that we could solve effectively.
You may have heard the description NP-complete. An NP-complete problem is one that is NP (of course), and has this interesting property: if it is in P, every NP problem ...
Check if a program exists from a Makefile
...some of the existing solutions here...
REQUIRED_BINS := composer npm node php npm-shrinkwrap
$(foreach bin,$(REQUIRED_BINS),\
$(if $(shell command -v $(bin) 2> /dev/null),$(info Found `$(bin)`),$(error Please install `$(bin)`)))
The $(info ...) you can exclude if you want this to be quiete...
How to fix “Incorrect string value” errors?
...chie: The database can happily call the data whatever it wants, but if the php code that grabs it is stuffing it into a string, that won't make much difference...will it? I don't see exactly where the lack of understanding of UTF-8 is having an impact.
– Brian
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