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Calculate number of hours between 2 dates in PHP
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The newer PHP-Versions provide some new classes called DateTime, DateInterval, DateTimeZone and DatePeriod. The cool thing about this classes is, that it considers different timezones, leap years, leap seconds, summertime, etc. And on ...
htmlentities() vs. htmlspecialchars()
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From the PHP documentation for htmlentities:
This function is identical to htmlspecialchars() in all ways, except with htmlentities(), all characters which have HTML character entity equivalents are translated into these entities....
MySQL Insert into multiple tables? (Database normalization?)
... table3 (@mysql_variable_here, ...);
Will stock the LAST_INSERT_ID() in a
php variable (or any language that
can connect to a database, of your
choice):
INSERT ...
Use your language to retrieve the LAST_INSERT_ID(), either by executing that literal statement in MySQL, or using for example php's m...
Array copy values to keys in PHP [duplicate]
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$final_array = array_combine($a, $a);
http://php.net/array-combine
P.S.
* Be careful with similar values. For example:
array('one','two','one') may be problematic if converted like duplicate keys:
array('one'=>..,'two'=>..,'one'=>...)
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Get data from JSON file with PHP [duplicate]
I'm trying to get data from the following JSON file using PHP. I specifically want "temperatureMin" and "temperatureMax".
3...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
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For capturing groups, I'm used to using preg_match_all in PHP and I've tried to replicate it's functionality here:
<script>
// Return all pattern matches with captured groups
RegExp.prototype.execAll = function(string) {
var match = null;
var matches = new Array();
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How to get file_get_contents() to work with HTTPS?
...he following script to see if there is an https wrapper available for your php scripts.
$w = stream_get_wrappers();
echo 'openssl: ', extension_loaded ('openssl') ? 'yes':'no', "\n";
echo 'http wrapper: ', in_array('http', $w) ? 'yes':'no', "\n";
echo 'https wrapper: ', in_array('https', $w) ? 'y...
App Inventor 2 试验组件 · App Inventor 2 中文网
...t 的输出）。
方法
对话(question)
向聊天机器人询问问题，连续的对话将记住先前对话中的信息，使用 重置对话 方法重置开始新的对话。
重置对话()
重置当前对话，聊天机器人在回复时会忘记之前的任何对话。
Fireb...
Finding the PHP File (at run time) where a Class was Defined
Is there any reflection/introspection/magic in PHP that will let you find the PHP file where a particular class (or function) was defined?
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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...接。 因此，我们开发蓝牙 LE 组件是为了解决物联网连接问题。
三． 技术方法
BluetoothLE 组件是 MIT App Inventor 的新颖补充。 如图 4 所示，在 MIT App Inventor 平台上创建时，BLE 组件可以作为移动应用程序的一部分实现。 然后，该...