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Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...试图同时用生理学和计算机的手段，双管齐下，研究视觉问题。
他们收集了很多黑白风景照片，从这些照片中，提取出400个小碎片，每个照片碎片的尺寸均为 16x16 像素，不妨把这400个碎片标记为 S[i], i = 0,.. 399。接下来，...
Deep Learning（深度学习）学习笔记整理系列之（一） - 大数据 & AI - 清泛...
...是怎么来的？又能干什么呢？目前存在哪些困难呢？这些问题的简答都需要慢慢来。咱们先来了解下机器学习（人工智能的核心）的背景。
二、背景
机器学习（Machine Learning）是一门专门研究计算机怎样模拟或实现人类...
How to convert array values to lowercase in PHP?
How can I convert all values in an array to lowercase in PHP?
10 Answers
10
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How do I get the base URL with PHP?
...
Try this:
<?php echo "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; ?>
Learn more about the $_SERVER predefined variable.
If you plan on using https, you can use this:
function url(){
return sprintf(
"%s://%s...
Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
...7)
But, there are at least two differences :
__DIR__ only exists with PHP >= 5.3
which is why dirname(__FILE__) is more widely used
__DIR__ is evaluated at compile-time, while dirname(__FILE__) means a function-call and is evaluated at execution-time
so, __DIR__ is (or, should be) faste...
Are PHP Variables passed by value or by reference?
... function is changed, it does not get changed outside of the function). To allow a function to modify its arguments, they must be passed by reference.
To have an argument to a function always passed by reference, prepend an ampersand (&) to the argument name in the function definition.
&l...
Remove empty array elements
... of strings, you can simply use array_filter(), which conveniently handles all this for you:
print_r(array_filter($linksArray));
Keep in mind that if no callback is supplied, all entries of array equal to FALSE (see converting to boolean) will be removed. So if you need to preserve elements that ...
PHP Function Comments
Just a quick question: I've seen that some PHP functions are commented at the top, using a format that is unknown to me:
4 ...
nginx showing blank PHP pages
...ginx that's shipped with Centos). I'd love to see the documentation around all of this improve.
– Jorre
Mar 27 '14 at 16:23
1
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php stdClass to array
...aster than iterating through the objects recursively - most likely because PHP is slow at calling functions). "But I already did this" you say. Not exactly - you used json_decode on the array, but you need to encode it with json_encode first.
Requirements
The json_encode and json_decode methods. T...