doulu8415 2010-11-17 10:43
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Ingeoding Array ...同时IGNORING嵌套数组?

I have looked around and I see a lot of people asking how to implode arrays with nested arrays. However, these people usually want to include the nested array as well. I do not want to include the nested array... I want to throw out the nested array...

This is my array:

[tag] => Array
(
    [0] => one
    [1] => two
    [0_attr] => Array
        (
            [category] => three
            [lock] => four
        )

    [2] => five
)

If I implode this array, comma delimited, I want the result to be:

one, two, five

Notice how three and four are NOT included. Since they are a nested array, I don't want it. I only want immediate values. How exactly would I get this done?

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  • douzi9744 2010-11-17 10:51
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    You would need to iterate all the values in $tag and filter out those is array
    such as

    $tags = array();
    foreach ($tag as $index=>$value)
    {
      if (!is_array($value))
      {
         $tags[$index] = $value;
      }
    }
    implode(',', $tags);
    

    I found the above is a bit tedious,
    here is the improved version

    $arr = array(0 => "one", 1 => "two", 2 => array(1,2,3), 3=>4, 4=>new stdClass);
    echo implode(",", array_filter($arr, "is_scalar"));
    

    output :

    one,two,4
    
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