duangong0690 2013-07-01 20:40
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在PHP中,如何从函数中回显数组的第二个键?

I want to output an array key which get returned from a function. Currently its like this:

$x = explode('/', 'my/path/home');
echo $x[1];

but how can i output with just one line without the variable assignment?

I'm trying this, but it doesnt work:

echo explode('/', 'my/path/home')[1];
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  • dsfdfd1211 2013-07-01 21:45
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    If you must do this in one line, IMO it is preferable to use list:

    list(, $x) = explode('/', $path);
    

    This is arguably better than the long-winded

    $x = implode('', array_slice(explode('/', $path), 1, 1));
    

    in which it's easy to forget what you were supposed to be doing in the first place.

    If you are not sure if there will be a second element, you can guard against problems with

    list(, $x) = array_pad(explode('/', $path), 2, null);
    

    However, I don't really recommend any of the above for real code. Use the two-liner if you have to; it will still be easier to read than any of these solutions.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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