Question

这是我的阵列：

Array (
    [0] => Sos, Ser
    [1] => Sos, Ser, Pieczarki
    [2] => Sos, Ser, Szynka
    [3] => Sos, Ser, Salami
    [4] => Sos, Ser, Szynka, Pieczarki
    [5] => Sos, Ser, Szynka, Ananas
    [6] => Sos, Ser, Salami, Pieczarki
    [7] => Sos, Ser, Tunczyk, Cebula
)

我想删除重复项。 array_unique()不起作用。期望的结果：

$result = array('Sos', 'Ser', 'Pieczarki', 'Szynka', 'Salami', 'Ananas','Tunczyk','Cebula');

Answer 1

根据您想要的最终数组输出，代码应该是这样的：

<?php

$original = array("Sos, Ser",
    "Sos, Ser, Pieczarki",
    "Sos, Ser, Szynka",
    "Sos, Ser, Salami",
    "Sos, Ser, Szynka, Pieczarki",
    "Sos, Ser, Szynka, Ananas",
    "Sos, Ser, Salami, Pieczarki",
    "Sos, Ser, Tunczyk, Cebula",
);

$uniques = array();
// Loop over each original string
foreach ($original as $st) {
    // Split at ', ' to extract names from each string
    $names = explode(", ", $st);
    foreach ($names as $name) {
        // Store this name as a key in the uniques array
        $uniques[$name] = 1;
    }
}

$uniques = array_keys($uniques);
print_r($uniques);

/* Output:

Array
(
    [0] => Sos
    [1] => Ser
    [2] => Pieczarki
    [3] => Szynka
    [4] => Salami
    [5] => Ananas
    [6] => Tunczyk
    [7] => Cebula
)
*/

Answer 2

假设您的数组为$array。

    $all_items = [];

    foreach ($array as $a1) {
        foreach ($a1 as $a2) {
            if (!in_array($a2, $all_items)) {
                $all_items[] = $a2;
            }
        }
    }

    return $all_items;

Answer 3

创建爆炸值的数组，并array_unique()：

$result = array();

foreach($array as $value) {
    $result = array_merge($result, explode(', ', $value));
}
$result = array_unique($result);

Answer 4

in_array总是有帮助：

#!/usr/bin/env php
<?php

$aLong = [
    'Sos, Ser',
    'Sos, Ser, Pieczarki',
    'Sos, Ser, Szynka',
    'Sos, Ser, Salami',
    'Sos, Ser, Szynka, Pieczarki',
    'Sos, Ser, Szynka, Ananas',
    'Sos, Ser, Salami, Pieczarki',
    'Sos, Ser, Tunczyk, Cebula',
];

$aTotal = [];
foreach ($aLong as $sSub) {
    foreach (preg_split('/, */', $sSub) as $sWord) {
        if (!in_array($sWord, $aTotal)) {
            $aTotal[] = $sWord;
        }
    }
}

print_r($aTotal);

删除多维数组中的重复项

4 个答案: