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Dynamically generating a QR code with PHP [closed]
I'm trying to generate QR codes on my website. All they have to do is have a URL in them, which a variable on my site will provide. What would be the easiest way to do this?
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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...
How do I strip all spaces out of a string in PHP? [duplicate]
How can I strip / remove all spaces of a string in PHP?
4 Answers
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How can I catch a “catchable fatal error” on PHP type hinting?
...assA::method_a() must be an instance of ClassB, instance of ClassA given, called in [...]
catched: Argument 1 passed to ClassA::method_a() must be an instance of ClassB, instance of ClassWrong given, called in [...]
method_a: ClassB
method_a: ClassC
done.
Old answer for pre-php7 versions:
http:/...
Php multiple delimiters in explode
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You can take the first string, replace all the @ with vs using str_replace, then explode on vs or vice versa.
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Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.
...aybe good to mention: When using MAMP like me you have to uncheck the box "Allow local access only"
– soupdiver
Jan 21 '13 at 17:23
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Is there a MySQL option/feature to track history of changes to records?
...ant to audit the changes to the data - who did what and when?", you can usually use audit tables (as per the trigger example Keethanjan posted). I'm not a huge fan of triggers, but it has the great benefit of being relatively painless to implement - your existing code doesn't need to know about the ...
Hidden Features of MySQL
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Since you put up a bounty, I'll share my hard won secrets...
In general, all the SQLs I tuned today required using sub-queries. Having come from Oracle database world, things I took for granted weren’t working the same with MySQL. And my reading on MySQL tuning makes me conclude that MySQL is be...
PHP filesize MB/KB conversion [duplicate]
...and 42% more costly to be precise (depending on which if condition $bytes falls into).
– Alix Axel
May 25 '13 at 3:48
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How to update a single library with Composer?
I need to install only 1 package for my SF2 distribution (DoctrineFixtures).
8 Answers
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