回答編集履歴
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追記
test
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@@ -7,3 +7,81 @@
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なんかリファクタリングしたぃ～って感じなら、テストいっぱい書いて、検証しながら配列を比較する関数と置き換えてみると良いです。
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**sample**
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```php
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<?php
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$test_arrays = [
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['apple', 'xxx'],
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['apple', 'melon'],
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['melon', 'apple'],
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['apple', ''],
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['apple', NULL],
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['apple', 0],
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];
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function test($test_array){
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$ok_arr = [
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'apple' => true,
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'melon' => true,
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];
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foreach($test_array as $str){
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if(!isset($ok_arr[$str])){
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return false;
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}
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}
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return true;
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}
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foreach($test_arrays as $test_array){
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echo (join(",", $test_array)) . ':';
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var_export(test($test_array));
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echo PHP_EOL;
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}
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```
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```
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apple,xxx:false
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apple,melon:true
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melon,apple:true
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apple,:false
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apple,:false
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apple,0:false
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```
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