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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...
Writing a new line to file in PHP (line feed)
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Use PHP_EOL which outputs \r\n or \n depending on the OS.
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How to send a GET request from PHP?
I'm planning to use PHP for a simple requirement. I need to download a XML content from a URL, for which I need to send HTTP GET request to that URL.
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PHP date() format when inserting into datetime in MySQL
What is the correct format to pass to the date() function in PHP if I want to insert the result into a MySQL datetime type column?
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PHP array: count or sizeof?
To find the number of elements in a PHP $array , which is faster/better/stronger?
7 Answers
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Convert from MySQL datetime to another format with PHP
...oking for a way to normalize a date into MySQL format, use the following
$phpdate = strtotime( $mysqldate );
$mysqldate = date( 'Y-m-d H:i:s', $phpdate );
The line $phpdate = strtotime( $mysqldate ) accepts a string and performs a series of heuristics to turn that string into a unix timestamp.
T...
Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]
What is the easiest way to encode a PHP string for output to a JavaScript variable?
14 Answers
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PHP Error handling: die() Vs trigger_error() Vs throw Exception
...ur application can fail and you want your code to recover across multiple call-levels.
trigger_error() lets you fine-grain error reporting (by using different levels of error messages) and you can hide those errors from end-users (using set_error_handler()) but still have them be displayed to you d...
How to check if a string starts with a specified string? [duplicate]
...-thread cache of compiled regular
expressions (up to 4096).
http://www.php.net/manual/en/intro.pcre.php
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What is the difference between fastcgi and fpm?
I am trying to install php with fpm on macports. I read somewhere that fpm means FastCGI process manager. Does that mean fastcgi and fpm are same? If they are same, then why do we have two different macports variants for php namely
"php5 +fastcgi" and
"php5 +fpm"
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