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What are the best PHP input sanitizing functions?
I am trying to come up with a function that I can pass all my strings through to sanitize. So that the string that comes out of it will be safe for database insertion. But there are so many filtering functions out there I am not sure which ones I should use/need.
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Counting inversions in an array
...earch. The number of inversions for this element will be one less than the index number of its position in B since every lower number that appears after the first element of A will be an inversion.
2a. accumulate the number of inversions to counter variable num_inversions.
2b. remove A[1] from ar...
Find element's index in pandas Series
...sic question but for some reason I can't find an answer. How can I get the index of certain element of a Series in python pandas? (first occurrence would suffice)
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PHPExcel auto size column width
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Also, If you don't want to iterate via column letters but indexes instead you can use the static method PHPExcel_Cell::stringFromColumnIndex($columnIndex) to get the column letter
– MeatPopsicle
Mar 3 '14 at 10:41
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Returning JSON from PHP to JavaScript?
I have a PHP script that's being called through jQuery AJAX. I want the PHP script to return the data in JSON format to the javascript. Here's the pseudo code in the PHP script:
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PHP append one array to another (not array_push or +)
...equals array('a','b')
Will not work, because the + operator does not actually merge them. If they $a has the same keys as $b, it won't do anything.
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'AND' vs '&&' as operator
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If you use AND and OR, you'll eventually get tripped up by something like this:
$this_one = true;
$that = false;
$truthiness = $this_one and $that;
Want to guess what $truthiness equals?
If you said false... bzzzt, sorry, wrong!
$truthiness above has the ...
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
4
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python pandas dataframe to dictionary
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See the docs for to_dict. You can use it like this:
df.set_index('id').to_dict()
And if you have only one column, to avoid the column name is also a level in the dict (actually, in this case you use the Series.to_dict()):
df.set_index('id')['value'].to_dict()
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How do I declare a 2d array in C++ using new?
...gneticCroissant You can argue it is not a 2D array. It's true. It can be indexed like a 2D array, but it is not a 2D array. The memory layout is in fact portrayed in the picture. The problem with that statement is it fails to work if M is not constant.
– Mehrdad Afshari
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