dongzhuo5425 2019-01-02 12:16
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如何检查特定的值索引是否存在

I have a php array like this.

Array
(
    [first_year] => Array
        (
            [1] => Array
                (
                    [0] => Array
                        (
                            [distiction] =>  , 2, 3, 4, 5, 6,  , 8, 9
                            [name] => ‌Mark
                            [status] => Pass with credit
                        )

                )

            [2] => Array
                (
                    [0] => Array
                        (
                            [distiction] =>  , 2, 3, 4, 5, 6, 7,  , 9
                            [name] => ‌John
                            [status] => 
                        )

                )

        )
)

I got that data by print_r($dataArray[$academic_year][$major]). How can I check if $dataArray[$academic_year][$major][$year] and check if [first_year] has values or not? I have already tried out empty(), !array_filter() and $dataArray[$academic_year][$major][$year] == []. But none of it working for me. Thank you.

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3条回答 默认 最新

  • du1068 2019-01-02 12:20
    关注

    You can use:

    if (array_key_exists($year, $dataArray[$academic_year][$major])) {
        if ($dataArray[$academic_year][$major][$year]){
            //your code here
        }
    }
    
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