如何在 PHP 中使用 3 维数组
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How to use 3 dimensional array in PHP
提问by Guilgamos
I'm doing some image processing in php and normally I never use array in php before.
我在 php 中做一些图像处理，通常我以前从未在 php 中使用过数组。
I have to keep the value of rgb value of hold image in 3 dimensional array.
我必须将保持图像的 rgb 值保留在 3 维数组中。
For example, rgbArray[][][]
例如， rgbArray[][][]
the first []is represent th weight, the second[]use to keep height and the last one is use to keep either red,greed or blue. How can i create an array in php that can keep this set of value.
第一个[]代表体重，第二个[]用于保持高度，最后一个用于保持红色，贪婪或蓝色。我如何在 php 中创建一个可以保留这组值的数组。
Thank you in advance.
先感谢您。
回答by Parris Varney
I think you're looking for a two dimensional array:
我认为你正在寻找一个二维数组：
$rgbArray[$index] = array('weight'=>$weight, 'height'=>$height, 'rgb'=>$rgb);
But here is a 3 dimensional array that could make sense for what you're asking.
但这里有一个 3 维数组，可以满足您的要求。
$rgpArray[$index] = array('red'=>array('weight'=>$weight, 'height'=>$height),
'green'=>array('weight'=>$weight, 'height'=>$height),
'blue'=>array('weight'=>$weight, 'height'=>$height));
回答by quantme
Your example is a little confuse rgbArray[1][1][red], it looks like you want this:
你的例子有点混淆rgbArray[1][1][red]，看起来你想要这个：
$rgbArray = array(1 => array(1 => array('red' => 'value')));
echo $rgbArray[1][1]['red']; // prints 'value'
I recommend, as PMVsaid, to do next:
正如PMV所说，我建议接下来做：
$rgbArray = array('weight' => 1, 'height' => 1, 'rgb' => 'red' );
or
或者
$rgbArray = array();
$rgbArray['weight'] = 1; // int value
$rgbArray['height'] = 1; // int value
$rgbArray['rgb'] = 'red'; // string value
If it's not what you want please be more specific in order to be helped.
如果这不是您想要的，请更具体以便获得帮助。
回答by Dmitrij Holkin
If yours array
如果你的数组
$rgbArray = array('red'=>array('weight'=>$weight, 'height'=>$height),
'green'=>array('weight'=>$weight, 'height'=>$height),
'blue'=>array('weight'=>$weight, 'height'=>$height));
Then you can assign the value to rgbArray like
然后你可以将值分配给 rgbArray 像
$weight = $rgbArray['red']['weight']
$height = $rgbArray['red']['height']
If yours array
如果你的数组
$rgbArray = array('red'=>array($weight, $height),
'green'=>array($weight, $height),
'blue'=>array($weight, $height));
Then you can assign the value to rgbArray like
然后你可以将值分配给 rgbArray 像
$weight = $rgbArray['red'][0]
$height = $rgbArray['red'][1]
