<?php $array = [ "data" => "data", "id_1553539135251" => "<p>nsmn</p>", "about" => "about", "id_1553539141598" => "<p>uiu</p>", ]; $result = []; $temp = []; foreach ($array as $k => $v) { if (str_starts_with($k, 'id_')) { $result[$k] = ['content' => $v] + $temp; $temp = []; } else { $temp[$k] = $v; } } var_export($result); /* array:3 [▼ "id_1553539135251" => array:1 [▼ "content" => "<p>nsmn</p>" "data" => "data" ] "id_1553539141598" => array:1 [▼ "content" => "<p>uiu</p>" "about" => "about" ] ] */
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