array_unique関数を使う。キーは保持されることに注意。
サンプルコード
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$ids = getIds(); print_r($ids); $ids = array_unique($ids); print_r($ids); |
処理例
処理前
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 |
Array ( [0] => 1 [1] => 21 [2] => 20 [3] => 23 [4] => 29 [5] => 34 [6] => 26 [7] => 25 [8] => 36 [9] => 22 [10] => 252 [11] => 243 [12] => 198 [13] => 210 [14] => 21 [15] => 20 [16] => 205 [17] => 23 [18] => 192 [19] => 29 [20] => 26 [21] => 195 [22] => 25 [23] => 200 [24] => 202 [25] => 22 [26] => 124 [27] => 34 [28] => 125 [29] => 36 [30] => 52 [31] => 55 [32] => 57 [33] => 54 [34] => 149 [35] => 36 ) |
処理後(重複削除後)
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
Array ( [0] => 1 [1] => 21 [2] => 20 [3] => 23 [4] => 29 [5] => 34 [6] => 26 [7] => 25 [8] => 36 [9] => 22 [10] => 252 [11] => 243 [12] => 198 [13] => 210 [16] => 205 [18] => 192 [21] => 195 [23] => 200 [24] => 202 [26] => 124 [28] => 125 [30] => 52 [31] => 55 [32] => 57 [33] => 54 [34] => 149 ) |
参考サイト
PHP: array_unique – Manual
http://php.net/manual/ja/function.array-unique.php