大约有 41,000 项符合查询结果（耗时：0.0268秒） [XML]
App Inventor 2 数据库方案全览：从本地存储到云端服务 - App应用开发 - 清...
...端
- 类型：原生组件
- 数据方案：自建服务端：MySQL + PHP后端数据库、MongoDB + PHP后端数据库
- 是否支持数据变更事件：可模拟支持
- 特点：自主可控，灵活性最高，相对成本最低
- 业务支撑级别：中大型网络数据及文件存...
Which mime type should I use for mp3
...g to decide which mime type to choose for returning mp3 data (served up by php)
5 Answers
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How does this giant regex work?
...ently found the code below in one of my directories, in a file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories.
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How to convert a string to lower case in Bash?
...uby`
Or Perl (probably my favorite):
b=`perl -e "print lc('$a');"`
Or PHP:
b=`php -r "print strtolower('$a');"`
Or Awk:
b=`echo "$a" | awk '{ print tolower($1) }'`
Or Sed:
b=`echo "$a" | sed 's/./\L&/g'`
Or Bash 4:
b=${a,,}
Or NodeJS if you have it (and are a bit nuts...):
b=`e...
MySQL Great Circle Distance (Haversine formula)
I've got a working PHP script that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code:
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What is SQL injection? [duplicate]
...ta or even changing data that they shouldn't be allowed to do.
Example in PHP:
$password = $_POST['password'];
$id = $_POST['id'];
$sql = "UPDATE Accounts SET PASSWORD = '$password' WHERE account_id = $id";
Now suppose the attacker sets the POST request parameters to "password=xyzzy" and "id=acc...
Sharing a URL with a query string on Twitter
...tion shareOnFB(){
var url = "https://www.facebook.com/sharer/sharer.php?u=https://yoururl.com&t=your message";
window.open(url, '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=300,width=600');
return false;
}
function shareOntwitter(){
var url = 'https...
selecting unique values from a column
...licates
BTW: using explicit column names in SELECT uses less resources in PHP when you're getting a large result from MySQL
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Removing array item by value
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my bad; php's variable aliasing gimmick always trips me over >.>
– srcspider
Aug 27 '13 at 20:10
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POST unchecked HTML checkboxes
...to put the hidden input first, per many the other answers. If you're using PHP, you can then do away with the javascript dependency, because only the last value gets used.
– Ben
Sep 13 '13 at 17:40
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