如果不在其他数组中，则从数组中删除值，但保持相同的顺序

Posted 2023-02-24

【中文标题】如果不在其他数组中，则从数组中删除值，但保持相同的顺序

【英文标题】：Remove values from array if not in other array, but keeping same order

【发布时间】：2011-07-04 07:27:33

【问题描述】：

我有两个数组：

$array1:

Array
(
    [0] => 2032
    [1] => 2027
    [2] => 2025
    [3] => 2023
    [4] => 2021
    [5] => 2018
    [6] => 2014
    [7] => 2011
    [8] => 2009
    [9] => 1947
    [10] => 1941
    [11] => 1939
    [12] => 1937
    [13] => 1935
    [14] => 1933
    [15] => 1928
    [16] => 1926
    [17] => 1924
    [18] => 1922
    [19] => 1920
    [20] => 1918
    [21] => 1916
    [22] => 1910
    [23] => 1881
    [24] => 1680
    [25] => 1678
    [26] => 1879
    [27] => 1877
    [28] => 1875
    [29] => 1873
    [30] => 1871
    [31] => 1869
    [32] => 1865
    [33] => 1863
    [34] => 1858
    [35] => 1850
    [36] => 1844
    [37] => 1838
    [38] => 1829
    [39] => 1827
    [40] => 1825
    [41] => 1821
    [42] => 1819
    [43] => 1814
    [44] => 1812
    [45] => 1810
    [46] => 1808
    [47] => 1806
    [48] => 1804
    [49] => 1801
    [50] => 1793
    [51] => 1791
    [52] => 1789
    [53] => 1784
    [54] => 1774
    [55] => 1772
    [56] => 1770
    [57] => 1768
    [58] => 1766
    [59] => 1764
    [60] => 1762
    [61] => 1760
    [62] => 1754
    [63] => 1748
    [64] => 1746
    [65] => 1744
    [66] => 1740
    [67] => 1738
    [68] => 1732
    [69] => 1722
    [70] => 1720
    [71] => 1716
    [72] => 1714
    [73] => 1711
    [74] => 1708
    [75] => 1703
    [76] => 1699
    [77] => 1673
    [78] => 1671
    [79] => 1669
    [80] => 1667
    [81] => 1665
    [82] => 1663
    [83] => 1661
    [84] => 1659
    [85] => 1655
)

$array2:

Array
(
    [0] => 1665
    [1] => 1671
    [2] => 1714
    [3] => 1716
    [4] => 1722
    [5] => 1732
    [6] => 1774
    [7] => 1801
    [8] => 1804
    [9] => 1916
    [10] => 1918
    [11] => 1920
    [12] => 1924
    [13] => 1933
    [14] => 1935
    [15] => 1939
)

我需要做的是检查数组 1 的每个值，看看它是否在数组 2 中，如果值在数组 2 中，则将该值放入数组 3 中。但是数组 3 需要保持数组 1 中值出现的顺序。

我可以编写一些代码来循环遍历数组 1，执行 in_array()，如果为 true，则放入数组 3。这可行，但我提出问题的原因是是否有任何功能可用于此任务？如果没有，那么最有效和最快速的方法是什么？

【参考方案1】：

你可以使用 array_intersect()。

http://php.net/manual/en/function.array-intersect.php

【参考方案2】：

$array3 = array_intersect($array, $array2)

http://php.net/manual/en/function.array-intersect.php