数组是否有内联“或”运算符？

Question

Is there any "inline" operator that can make this:

$class_map = array(
    'a' => 'long text',
    'b' => 'long text',
    'c' => 'long text',
    'd' => 'other text',
    'e' => 'different text'
);

To be something like:

$class_map = array(
'a' OR `b` OR `c` => 'long text'
'd' => 'other text',
'e' => 'different text'
);

I know about array_fill_keys() , but it's not really an "inline" solution, I want to be able to see/edit all my keys and values within the simple array .

Answer 1

No, there is no such operator specific to array keys. However, there may be other ways to achieve what you may be after more simply by just taking advantage of the very nature of arrays in PHP.

For example...

$class_map = [
    'a' => [
        'alias' => ['b','c',],
        'value' => 'long text',
    ],
    'd' => 'other text',
    'e' => 'different text',
];

Now your array could be read like this...

foreach($class_map as $key => $value) {
    if (is_array($value)) {
        // has aliases...
        foreach($value['alias'] as $v) {
            // do stuff with aliases here
        }
    } else {
        // has no aliases
    }
}

For the purposes of searching the aliases you could do something along the lines of...

function searchClassMap($className, Array $class_map)
{
    if (isset($class_map[$className])) {
        // if the className already is a key return its value
        return is_array($class_map[$className])
               ? $class_map[$className]['value']
               : $class_map[$className];
    }
    // otherwise search the aliases...
    foreach($class_map as $class => $data) {
        if (!is_array($data) || !isset($data['alias'])) {
            continue;
        }

        if (in_array($className, $data['alias'])) {
            return $data['value'];
        }
    }
}