回答編集履歴
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見直し
test
CHANGED
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@@ -1,3 +1,25 @@
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for-in文法をそのまま真似してかきたいのかもしれませんが、
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郷に入っては郷に従え、
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より便利な文法があれば使うべきだと思ったりもします。
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一定のデータ構造を先頭から末尾まで一つずつ順に処理するものだと察して、
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だったらforeachでいいじゃないか、という考え方です。
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何番目のデータを処理しているか、を意識して処理したい場合には、
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引数が0,1,2って連続している前提で、[count](https://www.php.net/manual/ja/function.count.php)関数を使うのも手ではないかと。
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---
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json文字列を[json_decode](https://www.php.net/manual/ja/function.json-decode.php)関数でデコードするときに、
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オブジェクトと配列のどちらかを選択できます。
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@@ -218,11 +240,11 @@
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EOT;
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$
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$arr = json_decode($json, true);
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$message = '';
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foreach ($
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foreach ($arr as $item){
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$message .= $item['name'] . "\n```" . $item['gender'] . "```\n";
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@@ -231,3 +253,115 @@
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echo $message;
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```
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foreachじゃなくforにした事例：
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```php
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<?php
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$json = <<<EOT
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[
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{
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"age": 20,
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"name": "Mccullough Blevins",
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"gender": "male",
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"company": "ARTWORLDS",
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"email": "mcculloughblevins@artworlds.com",
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"address": "257 Hillel Place, Yogaville, Tennessee, 5537"
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},
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{
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"age": 25,
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"name": "Casey Meadows",
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"gender": "female",
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"company": "TUBESYS",
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"email": "caseymeadows@tubesys.com",
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"address": "886 Cropsey Avenue, Kraemer, New Jersey, 7623"
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},
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{
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"age": 27,
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"name": "Lucinda Neal",
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"gender": "female",
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"company": "COMDOM",
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"email": "lucindaneal@comdom.com",
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"address": "802 Elton Street, Crown, Wyoming, 7838"
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},
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{
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"age": 36,
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"name": "Effie Martinez",
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"gender": "female",
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"company": "ZOINAGE",
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"email": "effiemartinez@zoinage.com",
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"address": "435 Tompkins Avenue, Rossmore, Washington, 5586"
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},
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{
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"age": 28,
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"name": "Rae Kirby",
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"gender": "female",
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"company": "ZIGGLES",
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"email": "raekirby@ziggles.com",
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"address": "719 Kimball Street, Muse, California, 4171"
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}
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]
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EOT;
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$arr = json_decode($json, true);
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$message = '';
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$cnt = count($arr);
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for ($i = 0; $i < $cnt; $i++){
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$message .= $arr[$i]['name'] . "\n```" . $arr[$i]['gender'] . "```\n";
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}
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echo $message;
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```
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