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<?php $fruits = ['apple', 'orange', 'melon', 'banana', 'pineapple']; echo json_encode($fruits, JSON_PRETTY_PRINT) . "\n"; foreach ($fruits as $key=>$fruit) { if (in_array($fruit, ['apple', 'orange', 'melon', 'banana'])) { unset($fruits[$key]); } } echo json_encode($fruits, JSON_PRETTY_PRINT) . "\n"; $fruits = array_values($fruits); echo json_encode($fruits, JSON_PRETTY_PRINT) . "\n";
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
[ "apple", "orange", "melon", "banana", "pineapple" ] { "4": "pineapple" } [ "pineapple" ]

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