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App Inventor 2 项目会自动保存吗？这两个操作很多人不知道 - App应用开发 ...
...吗？这两个操作很多人不知道
有朋友在社区问了一个问题：App Inventor 2 的项目是自动保存的吗？
说实话，这个问题刚听到的时候我还愣了一下——因为对老手来说，这几乎是"呼吸一样自然"的事。但仔细想想，对于...
PHP function to make slug (URL string)
... use Transliterator::transliterate function to create a slug easily.
<?php
$string = 'Namnet på bildtävlingen';
$slug = \Transliterator::createFromRules(
':: Any-Latin;'
. ':: NFD;'
. ':: [:Nonspacing Mark:] Remove;'
. ':: NFC;'
. ':: [:Punctuation:] Remove;'
. ':: Lowe...
json_decode to array
...assoc parameter is FALSE by default, You have to set this value to TRUE in order to retrieve an array.
Examine the below code for an example implication:
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
var_dump(json_decode($json));
var_dump(json_decode($json, true));
which outputs:
object(stdClass)#...
Hidden Features of MySQL
... COLUMNS FROM mytable
SELECT max(namecount) AS virtualcolumn FROM mytable ORDER BY virtualcolumn
http://dev.mysql.com/doc/refman/5.0/en/group-by-hidden-fields.html
http://dev.mysql.com/doc/refman/5.1/en/information-functions.html#function_last-insert-id
last_insert_id()
gets you the PK of the ...
SQL injection that gets around mysql_real_escape_string()
...t necessarily know the character that will be used to quote the literal in order to avoid munging one's data.
The Payload
" OR 1=1 --
The payload initiates this injection quite literally with the " character. No particular encoding. No special characters. No weird bytes.
mysql_real_escape_str...
How to design RESTful search/filtering? [closed]
... a search. You do not have to literally create something in a database in order to use a POST.
For example:
Accept: application/json
Content-Type: application/json
POST http://example.com/people/searches
{
"terms": {
"ssn": "123456789"
},
"order": { ... },
...
}
You are creating a...
AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?
...TP request by the OPTIONS method to the resource on the
other domain, in order to determine whether the actual request is safe
to send. Cross-site requests are preflighted like this since they may
have implications to user data. In particular, a request is
preflighted if:
It uses m...
Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
...risks before using this code.
It's very simple to solve if you are using PHP. Just add the following script in the beginning of your PHP page which handles the request:
<?php header('Access-Control-Allow-Origin: *'); ?>
If you are using Node-red you have to allow CORS in the node-red/sett...
马云：互联网时代已经过去20年，接下来30年才是关键 - 资讯 - 清泛网 - 专...
...母借钱，想朋友借，如果大家都不借给你，说明你人品有问题。”
随着时间推进，马云越发逸兴遄飞，妙语不断。他甚至很认真对近2000名年轻人说：“你们要在一两年超过我们，是不可能的，除非我们实在愚蠢。但是如果给你...
简单谈谈软件配置管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...QA监督配置审计是否按照标准流程来进行，并记录不一致问题。
f）每次配置审计要将审计结果记录到《配置审计报告》中，记录和跟踪配置审计检查出的问题。
物理审计的方法：
根据《配置审计检查单》去检查，该有的配置...