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<?php $products = json_decode('[ { "title": "Product One", "categories": ["one", "two"] }, { "title": "Product Two", "categories": ["two", "three"] }, { "title": "Product Three", "categories": ["three", "four"] } ]'); $result = []; foreach ($products as $row) { if (in_array('two', $row->categories)) { $result[] = $row; } } echo json_encode($result, JSON_PRETTY_PRINT);
Output for git.master_jit, git.master, rfc.property-hooks
[ { "title": "Product One", "categories": [ "one", "two" ] }, { "title": "Product Two", "categories": [ "two", "three" ] } ]

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