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  • PHP如何得到数组最后元素的key

    1.array_keys(end($arr))

    1. $array = array(
    2. 'one'=>1,
    3. 'two'=>2,
    4. 'three'=>3,
    5. 'four'=>4,
    6. );
    7. $arr = array_keys($array);
    8. var_dump(end($arr));

    2.array_pop(end($arr))

    1. $array = array(
    2. 'one'=>1,
    3. 'two'=>2,
    4. 'three'=>3,
    5. 'four'=>4,
    6. );
    7. $arr = array_keys($array);
    8. var_dump(array_pop($arr));

    3.foreach()

    1. $array = array(
    2. 'one'=>1,
    3. 'two'=>2,
    4. 'three'=>3,
    5. 'four'=>4,
    6. );
    7. foreach($array as $key => $value){
    8. $temp = $key;
    9. }
    10. var_dump($temp)

    4.array_slice

    1. $array = array(
    2. 'one'=>1,
    3. 'two'=>2,
    4. 'three'=>3,
    5. 'four'=>4,
    6. );
    7. $arr = array_slice($array,-1,1,true);
    8. var_dump(key($arr));
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  • 原文地址:https://www.cnblogs.com/bluealine/p/7576306.html
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