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I have an array:
$countries = array(
"af" => "Afghanistan",
"ax" => "Åland Islands",
"al" => "Albania",
"dz" => "Algeria"
);
and some variables:
$as = "American Samoa";
$ad = "Andorra";
How do I combine the variables into the array while keeping the variable name as the key in the array?
533
The array_merge_recursive() function merges one or more arrays into one array. The difference between this function and the array_merge() function is when two or more array elements have the same key. Instead of override the keys, the array_merge_recursive() function makes the value as an array.
Instead of having so many similar variables, you should use an array, or in your case an array of arrays: var myVariableArray = new double[][] { c[0], c[1], ... }; Now you can easily acces the i-th number within that array: double a = myVariableArray[i][i];
Assigning values to an element in an array is similar to assigning values to scalar variables. Simply reference an individual element of an array using the array name and the index inside parentheses, then use the assignment operator (=) followed by a value.
An array is a variable containing multiple values. Any variable may be used as an array. There is no maximum limit to the size of an array, nor any requirement that member variables be indexed or assigned contiguously. Arrays are zero-based: the first element is indexed with the number 0.
You can use compact to create an array out of your variables and then simply add the two arrays together:
$countries += compact('as', 'ad');
See it in action.
146
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