Question

帮我把数组值组合起来。我有相同的数组：在我的情况下，我应该像钥匙一样保存客户名称。

    Array
(
    [Test Name] => Array
        (
            [0] => Array
                (
                   [name] => 
                  banana
                    [id] => 
                  45002
                    [quantity] => 
                  10
                )
            [1] => Array
                (
                    [name] => 
                 banana
                    [id] => 
                 45002
                    [quantity] => 
                   20
                )
            [3] => Array
                (
                    [name] => 
                    apple 
                    [id] => 
                   23402
                    [qua] => 
                    1
                )

            [5] => Array
                (
                    [name] => 
                   cherry 
                    [id] => 
                   40017
                    [qua] => 
                   7
                )

如何得到这样的东西：

Array
(
    [Test Name] => Array
        (
            [0] => Array
                (
                   [name] => 
                  banana
                    [id] => 
                  45002
                    [quantity] => 
                  30 // summ quantity but unique name and id 
                )
            [1] => Array
                (
                    [name] => 
                    apple 
                    [id] => 
                   23402
                    [qua] => 
                    1
                )

            [2] => Array
                (
                    [name] => 
                   cherry 
                    [id] => 
                   40017
                    [qua] => 
                   7
                )

在我的情况下，我应该像钥匙一样保存客户名称。然后我会把它上传到桌子上。

Answer 1

您可以使用import matplotlib.pyplot as plt import numpy as np from scipy import fft, arange csv = np.genfromtxt ('/Users/shaunbarney/Desktop/Results/quadOscillations.csv', delimiter=",",dtype=float) x = csv[:,0] y = csv[:,1] x = x - 6318 #Remove start offset av=0 for i in xrange(1097): #Calculate average sampling time in seconds oscillations if i == 1076: avSampleTime = av/1097000 # break av = av + (x[i+1]-x[i]) Fs = 1/avSampleTime #Average sampling freq. n = 1079 #no.Samples k = arange(n) Ts = n/Fs frq = k/Ts #Frequency range two sided frq = frq[range(n/2)] #Frequency range one sided Y = fft(y)/n #Fast fourier transfors Y = Y[range(n/2)] #Normalise # PLOTS plt.subplot(2,1,1) plt.plot(frq,abs(Y),'r') # plotting the spectrum plt.xlabel('Freq (Hz)') plt.ylabel('|Y(freq)|') plt.grid('on') plt.subplot(2,1,2) plt.plot(x,y) plt.xlabel('Time (ms)') plt.ylabel('Angle (degrees)') plt.grid('on') plt.show()和array_map来完成它：

array_reduce

来自文档：

array_map() 在将回调函数应用于每个元素后返回包含array1的所有元素的数组。

array_reduce() 将回调函数迭代地应用于数组元素，以便将数组减少为单个值。

在我们的例子中，给$results = array_map(function ($result) { return array_reduce($result, function ($carry, $item) { if (isset($carry[$item['id']])) { $carry[$item['id']]['quantity'] += $item['quantity']; } else { $carry[$item['id']] = $item; } return $carry; }, array()); }, $results);函数的回调返回一个最终数组，其中包含array_reduce的唯一项。

在数组中组合相同的值

1 个答案: