multidimensional-array

问题 I have an array: $arr_nav = array( array( "id" => "apple", "url" => "apple.html", "name" => "My Apple" ), array( "id" => "orange", "url" => "orange/oranges.html", "name" => "View All Oranges", ), array( "id" => "pear", "url" => "pear.html", "name" => "A Pear" ) ); Which I would like to use a foreach loop to replace (which only allows me to set the number: for ($row = 0; $row < 5; $row++) with the ability to display a .first and .last class for the relevant array values Edit I would like the

问题 I have an array: $arr_nav = array( array( "id" => "apple", "url" => "apple.html", "name" => "My Apple" ), array( "id" => "orange", "url" => "orange/oranges.html", "name" => "View All Oranges", ), array( "id" => "pear", "url" => "pear.html", "name" => "A Pear" ) ); Which I would like to use a foreach loop to replace (which only allows me to set the number: for ($row = 0; $row < 5; $row++) with the ability to display a .first and .last class for the relevant array values Edit I would like the

问题 I need to create a 2D array where each row may start and end with a different number. Assume that first and last element of each row is given and all other elements are just interpolated according to length of the rows In a simple case let's say I want to create a 3X3 array with same start at 0 but different end given by W below: array([[ 0., 1., 2.], [ 0., 2., 4.], [ 0., 3., 6.]]) Is there a better way to do this than the following: D=np.ones((3,3))*np.arange(0,3) D=D/D[:,-1] W=np.array([2,4

问题 I got a multidimensional array like this: Totalarray ( [0] => Array ( [city] => NewYork [cash] => 1000 ) [1] => Array ( [city] => Philadelphia [cash] => 2300 ) [2] => Array ( [city] => NewYork [cash] => 2000 ) ) and I'd like to sum the value [cash] of the sub-arrays who got the same value[city] and obtain an array like this: Totalarray ( [0] => Array ( [city] => NewYork [cash] => 3000 ) [1] => Array ( [city] => Philadelphia [cash] => 2300 ) ) How can I do it? 回答1: Try below code: <?php $arr =

问题 I got a multidimensional array like this: Totalarray ( [0] => Array ( [city] => NewYork [cash] => 1000 ) [1] => Array ( [city] => Philadelphia [cash] => 2300 ) [2] => Array ( [city] => NewYork [cash] => 2000 ) ) and I'd like to sum the value [cash] of the sub-arrays who got the same value[city] and obtain an array like this: Totalarray ( [0] => Array ( [city] => NewYork [cash] => 3000 ) [1] => Array ( [city] => Philadelphia [cash] => 2300 ) ) How can I do it? 回答1: Try below code: <?php $arr =

问题 In Numpy, I can concatenate two arrays end-to-end with np.append or np.concatenate : >>> X = np.array([[1,2,3]]) >>> Y = np.array([[-1,-2,-3],[4,5,6]]) >>> Z = np.append(X, Y, axis=0) >>> Z array([[ 1, 2, 3], [-1, -2, -3], [ 4, 5, 6]]) But these make copies of their input arrays: >>> Z[0,:] = 0 >>> Z array([[ 0, 0, 0], [-1, -2, -3], [ 4, 5, 6]]) >>> X array([[1, 2, 3]]) Is there a way to concatenate two arrays into a view , i.e. without copying? Would that require an np.ndarray subclass? 回答1:

问题 I'm working with a a distributed system where a php app sends a post request to a python app. My code is pretty straight forward: $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,$url); curl_setopt($ch,CURLOPT_RETURNTRANSFER,true); curl_setopt($ch,CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $postData); $output=curl_exec($ch); I have a 2d php array that looks like: array(3) { [0]=> array(2) { ["a"]=> 'aaa' ["token"]=> string(55)

问题 Though we declare a function with an integer array, we pass address of the array to the function. In the case of simple integers it gives error if we pass address we get pointer conversion error. But how its possible in case of an array #include<stdio.h> void print_array(int array[][100],int x, int y); main() { int i,j,arr[100][100]; printf("Enter the array"); for(i=0;i<2;i++) { for(j=0;j<2;j++) { scanf("%d",&arr[i][j]); } } print_array(arr,i,j); } void print_array(int array[][100],int x,int

问题 I wonder what's the best way to insert data into a database from a multidimensional form. The name of my form inputs is something like below: name="order[][quantity]" name="order[][description]" name="order[][article]" name="order[][price]" name="order[][tax]" name="order[][discount]" How to insert this data into my database? Below is a image of my form: As you can see the user can add many sections and all are to be handled by one submit button. Number of orders is a variable. How do I

问题 I want to ask about how to replace inner key in a multidimensional array. I have an multidimensional array : $array1= array(array(5000, 6, 325, 3, 3, 517000000), array( 20000, 5, 217, 5, 3, 1692000000) ); The second array is $array2=array(1,2,3,4,5,6); I expected the new array is Array( [0] => Array ( [1] => 5000 [2] => 6 [3] => 325 [4] => 3 [5] => 3 [6] => 517000000 ) [1] => Array ( [1] => 20000 [2] => 5 [3] => 217 [4] => 5 [5] => 3 [6] => 1692000000 )) I have tried this code below by