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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...设备标识符。然后，接收器会过滤掉它感兴趣的设备。
问题是：App Inventor 没有内置 UDP，而且我找不到可用的扩展。所以自己动手吧。
注意：
如果智能手机和远程站位于同一个（本地）网络中，则扩展可以完美运行。如果智...
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&...
How can I measure the speed of code written in PHP? [closed]
...ow three of those :
Webgrind ; web interface ; should work on any Apache+PHP server
WinCacheGrind ; only on windows
KCacheGrind ; probably only Linux and linux-like ; That's the one I prefer, btw
To get profiling files, you have to install and configure Xdebug ; take a look at the Profiling PHP...
How to disable XDebug
...
Find your php.ini and look for XDebug.
Set xdebug autostart to false
xdebug.remote_autostart=0
xdebug.remote_enable=0
Disable your profiler
xdebug.profiler_enable=0
Note that there can be a performance loss even with xdebug di...
How do I convert a PDF document to a preview image in PHP? [closed]
...
You need ImageMagick and GhostScript
<?php
$im = new imagick('file.pdf[0]');
$im->setImageFormat('jpg');
header('Content-Type: image/jpeg');
echo $im;
?>
The [0] means page 1.
sha...
Unexpected results when working with very big integers on interpreted languages
...et the sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
36 Answers
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PHP Sort a multidimensional array by element containing date
...compare")), so that usort() knows it's a class function/method. See also: php.net/manual/en/…
– Ferdinand Beyer
May 26 '10 at 16:26
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How to use a switch case 'or' in PHP
Is there a way of using an 'OR' operator or equivalent in a PHP switch?
10 Answers
10
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How can I capture the result of var_dump to a string?
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Use output buffering:
<?php
ob_start();
var_dump($someVar);
$result = ob_get_clean();
?>
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How do you set up use HttpOnly cookies in PHP
How can I set the cookies in my PHP apps as HttpOnly cookies ?
10 Answers
10
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