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  • range,shuffle,str_shuffle

    print_r(range(1,20));

    输出,range产生

    Array
    (
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
    [8] => 9
    [9] => 10
    [10] => 11
    [11] => 12
    [12] => 13
    [13] => 14
    [14] => 15
    [15] => 16
    [16] => 17
    [17] => 18
    [18] => 19
    [19] => 20
    )

    $arr = range(1,20);
    shuffle($arr);
    print_r($arr);

    shuffle将数组本身顺序打乱,将数组本身返回

    以上输出:

    Array
    (
    [0] => 19
    [1] => 13
    [2] => 20
    [3] => 3
    [4] => 14
    [5] => 6
    [6] => 7
    [7] => 1
    [8] => 2
    [9] => 17
    [10] => 18
    [11] => 8
    [12] => 4
    [13] => 12
    [14] => 15
    [15] => 11
    [16] => 9
    [17] => 10
    [18] => 16
    [19] => 5
    )

    $arr = range(1,20);
    $str = implode('',$arr);
    echo str_shuffle($str)."
    ";
    echo $str;

    输出:

    1016633281915412115171119042718
    1234567891011121314151617181920

    str_shuffle将字符串顺序打乱后,返回打乱后的字符串

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  • 原文地址:https://www.cnblogs.com/walter371/p/4183436.html
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